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Category --
 Process: 0. Corrosion. Compatibility, Choosing a Finish
 Preparation: 1a. Mechanical Prep 1b. Chemical Pretreatments 1c. Masking & Racking
 Inorganic Finishing: 2a. Anodizing & Light Metals 2b. Electroplating & Electroforming 2c. Electroless Plating
2d. PVD, CVD, Vacuum Processes 2e. Galvanizing, Hot Dipping 2f. Black Oxide, Bluing, Coloring
2g. Other Inorganic Finishing Processes
 Organic Finishing: 3a. Electropainting, Autophoretic 3b. Powder Coating 3c. Lacquers, Clearcoats
3d. Painting, Printing, Adhesives, Organic Coatings
 Post-treatments: 4a. Chemical Post-treatments 4b. Baking & Non-chemical Post-treatments 4c. Stripping, Reworks, etc.
 Supporting Issues: 5a. Analysis, Lab Technique, QA/QC 5b. Water, Wastewater, Pollution 5c. Safety, Emissions, Toxicity
5d. Plant & Process Engineering 5e. Software, Specs, Books, Stats 5f. World Wide Word Of The Week
5g. REACH, RoHS, E-O-L, etc. 5h. Mostly metallurgy
 Non-industrial: 6a. Hobbyists, Enthusiasts, Artists 6b. Research, Thesis work 6c. K-12 Science Projects, Elementary to High School
 Not Metal Finishing: 7. Off Topic, but Interesting


(    )= Date in parentheses is most recent posting on the thread
open Q.= Thread currently ends with a question or the site curator's inconclusive musings
opinion!= Comments may raise blood pressure
silly :-)= For those with a sense of humor
video= Contains embedded video
camera= The inquiry has photos / graphics
pdf= Contains embedded pdf
vip= Inquirer often helps others, so especially deserves our help


07984. What metals can resist hydrochloric acid? open Q. (August 18)
35456. Salt fog expectations for electroless nickel plating, B4C, black oxide, Raydent coatings (August 18)
60492. Identify this finish from the picture camera open Q. (August 17)
22164. Is our wire zinc electroplated or hot dipped? (August 16)
53205. E-coating vs. Zinc plating -- which is the better long term option? (August 13)
51980. Finishes for Bolts on Galvanized Structural Steel open Q. (August 4)
03354. Stainless steel corrosion by chloride ions? (July 29)
60482. Galvanic corrosion: nickel plated lightning rod on zinc coated roof? video (July 19)
00866. Need Low-friction Hard Material open Q. (July 8)
31153. Can I use Stainless steel washer for A193 GrB7 bolts? (July 7)
16063. Stainless Steel Hardware with Aluminum (July 6)
04678. Lower cost alternative to powder coat open Q. (June 24)
19766. SS Trailer Cladding on Galvanized Frame? (June 22)
42425. Color plating of tubing sockets - what's the process? camera open Q. (June 21)
07441. Alternate to Hard Chrome Plating for Aluminum (June 21)
25485. Electropolishing 316L stainless vs. powder coating it (June 13)
30012. Best coating for steel trough carrying molten aluminum (May 23)
60453. Need conductive plating with 2000 hour salt spray resistance open Q. (May 22)
  9755. Cause of green corrosion in copper switch camera open Q. (May 19)
06009. How to get black finish on stainless steel (May 17)
42140. Stainless or zinc plated a better galvanic couple with aluminum? (March 31)
50259. Galvanic Action between Stainless Steel and Phosphated Steel open Q. (March 30)
40228. Electroplating of iPhone cover glass camera open Q. (March 28)
07605. Black Oxide vs. Phosphate for Automotive Chisels & Punches (March 24)
09924. Hot Dip Galvanize vs. Zinc Plating (March 19)
51572. Dull metal for a shampoo backbar (March 18)
60406. Finishing of Iron Pipe for Furniture camera (March 18)



16835. Best finishing process on 316 stainless steel sinks for balance of scratch resistance & fingerprint resistance? open Q. (July 30)
14020. Centrifugal Barrel Finishing (July 14)
54590. Silver coins are sticky after vibratory polishing in shampoo (June 14)
05629. Best way to polish tiny pieces of 304 stainless steel wire? (June 13)
60434. 3-D Printing: Removal of oxide on alloys camera (April 25)
39543. Polishing flat stainless steel motorcycle bottle openers (April 7)
29425. Shot blasting abrasive particles (March 28)


34052. Glittery Manganese Phosphating camera open Q. (August 20)
10704. Straight caustic soda or HCl pluss grass as a degreaser open Q. (August 18)
01134. Electropolishing of Carbon Steel Crankshaft open Q. (August 17)
12926. Electropolishing with citric acid camera (August 16)
00960. Black Zinc Phosphate open Q. (August 16)
11762. Passivation / Electropolish -- Proper Sequence? camera open Q. (August 15)
37180. Descaling of Heat Treated Parts (August 14)
45662. Which is better: "Shot blasting" or "7-Tank phosphating process" (August 13)
13366. Problems and solutions in zinc phosphating open Q. (August 13)
00019. How to Blacken Stainless Steel camera open Q. (August 13)
34755. How to set up a DIY Electropolishing system for stainless steel open Q. (August 13)
12028. Is degreasing necessary before pickling? (August 8)
60474. How much HCl is consumed by rust? No room for acid additions (August 8)
60479. EP Phosphate Coating on 1065 Steel Leaf Spring - Resolving Fatigue Reliability Issue camera (July 31)
48252. White hazy finish after descaling Titanium camera open Q. (July 27)
47682. Electropolishing of Cobalt Chromium Stents open Q. (July 21)
34052. How to sort our zinc phosphated parts from manganese phosphated ones (July 20)
51028. Magnesium Phosphating Crystals Are Too Big (July 10)
41404. Parts rusting after zinc phosphating open Q. (July 10)
35679. On-site passivation of pipe (July 7)
41896. Pickling cast iron with sulfuric acid open Q. (July 4)
46618. Drying Step in Citric Acid Passivation (June 24)
02963. Why passivate after electropolishing? (June 24)
31341. Stainless turned black when citric acid was applied (June 15)
02258. Non-cyanide electropolishing of gold open Q. (June 6)
02511. Passivation Required between Grit Blasting and Paint Finishing? (May 25)
50266. Wire phosphating gets white powder layer open Q. (May 21)
08401. Using sulphamic acid to clean carbon steel heat exchanger tubes (May 15)
10795. Localised Electropolishing of SS (May 2)
02435. Manganese Phosphate Bath Heating and Sludge Control (April 28)
17826. How to increase zinc phosphate coating weight camera (April 28)
60432. Powder coating pre-treatment per needs, not competitor number/assumptions open Q. (April 17)
60423. Deep etching problems while using Dry Film camera (April 7)
23742. Need composition for jet black phosphatizing open Q. (March 29)
20617. 410SS passivated screws get red rust (March 25)
40139. How to prevent rusting after acid pickling (March 25)
53648. On-site 'out of the tank' Electropolishing process (March 17)
16827. Improving the Composition of our Zinc phosphating process (March 17)


16048. What to plug tubing with for plating (February 19)



38525. Trivalent chromate vs. chrome-free conversion coating (August 18)
01263. Electrocoloring: Stannous sulphate in liquid vs. powder form open Q. (August 18)
10893. Sharpening up an Alodine 1132 Touch Up Pen (August 18)
22496. Anodising directly over natural oxide layer (August 17)
12880. Plating a Large Cast Aluminum Rotational Mold open Q. (August 12)
33933. Masking/stripping when chromate conversion and anodizing on same part (August 4)
01819. Thickness of teflon impregnated anodizing (August 3)
02197. Chromic vs. Sulfuric Anodize. Boric-Sulfuric as Substitute? open Q. (August 3)
60487. Aluminum Conversion Coating: US Equivalent to Alodine 160/161 open Q. (August 2)
13775. How to Alodine ADC12 (July 29)
45834. How to print patterns onto Anodized Aluminum (July 28)
60302. Runs streaks in type III black dye (July 27)
00332. Yellow stains on our anodized aluminum open Q. (July 27)
42754. Anodizing to a matte black finish (July 24)
60473. Finishing/cleaning type 5083 Aluminium for UHV open Q. (July 14)
38164. Surface grinding a nickel acetate sealed surface (July 6)
33304. Sodium Dichromate Seal Colour has changed (June 26)
43248. Tin sulphate concentration in electrolytic coloring bath jumps up & down open Q. (June 21)
56240. How to avoid tool marks when anodizing (June 19)
34822. Paint Adhesion Failure on Alodined Aluminum (June 17)
48150. Problems with Color of Hardcoat Anodize open Q. (June 17)
01594. Pitting on green dyed anodized parts, but not black dyed parts camera (June 7)
58978. Fungus in brown dye open Q. (May 31)
02076. Less Damaging Stripper for Anodizing Racks? (May 30)
60454. Black anodize issue: pitting and salt-like substance camera (May 30)
19226. Black Titanium Finish (May 25)
46000. 356-T6 Sand Casting Anodizing Issues camera (May 10)
52350. Hardcoat Anodizing Voltage (May 8)
41102. Hard anodic coating before inserting Helicoil? (May 4)
25797. Bonding resistance increases over time -- Olive green cadmium to chromated aluminum open Q. (April 17)
60433. Heat Treat Al Casting for 300 hrs Salt Spray Life open Q. (April 17)
21510. Aluminum electropolishing Q&A's: white spots when touched after drying (April 7)
20361. Spot anodizing for touchup open Q. (April 4)
60424. Plating Aluminum Sand Casting Requiring Electrical Conductivity open Q. (April 4)
33735. Aluminum composite tool finishing: Anodizing vs. Electroless Nickel Plating (March 30)
60418. Zinc plating "Rocket Music Wire" open Q. (March 28)
60415. Time Saver, then Direct to Silk Screen? Or must we etch/chromate? open Q. (March 25)
18655. Bead blasting aluminum before anodizing. Cosmetic anodizing. (March 24)
43432. White spot 24 hours after anodizing adc12 aluminum open Q. (March 17)


27089. Electrodeposition of Tungsten open Q. (August 20)
02501. Chrome repair of undersize parts open Q. (August 20)
37641. Electroformed Nickel Cobalt alloy, heat treatment info? (August 18)
50564. Delayed Blistering in Alkaline Zinc Electroplating (August 12)
47325. Purple Hue on Clear Chromated Parts (August 8)
47037. Chromate conversion on cadmium not adhering (August 8)
23909. Zinc Plating on FM Steel and Ductile Iron Issues camera (August 8)
03795. Ideal Anode to cathode distance in Nickel plating (August 4)
46369. Buffer for nickel electrowinning (August 4)
32795. Need help to make chrome brush plating solution open Q. (August 3)
01185. Sn/Pb plateout (August 2)
52165. Gold plating of aluminum camera (August 2)
40962. Tin Refining Additives open Q. (July 31)
04169. Iron contamination / buildup problem in acid zinc plating open Q. (July 31)
35361. Pyrophosphate and non-cyanide copper strike/plating process problems and solutions open Q. (July 30)
48281. Plating zinc die casting without copper cyanide strike open Q. (July 30)
15809. Can't get jet black with trivalent chromate open Q. (July 28)
11955. Hard chrome plated rotogravure cylinder surface is oxidized and white rust observed (July 25)
25279. Alternative to gold plating for conductivity (July 21)
50375. What is proper Rhodium Plating Thickness (July 20)
55075. Hard chrome plating chipped off open Q. (July 20)
24506. Copper plating of grounding/earthing rods (July 18)
05358. Large 'nodules' on gold rinse filter camera (July 16)
04153. Chrome Plating Small Tubing I.D. (July 15)
24339. After heating Nickel plating it turns olive green camera (July 14)
59451. Chrome plating rectifier problems open Q. (July 14)
60379. Chloride stain mark on chrome surface (July 14)
40095. Zinc plated wire turns yellow in rainy season (July 14)
13252. Chrome plating adhesion standards open Q. (July 11)
44753. Diamond plating of dental burrs (July 11)
28851. Some problems with Process of Zinc-Nickel Plating (July 5)
09676. Problems with tin plating over brass open Q. (July 5)
57109. Optimising Zinc Nickel Plating Throw (June 30)
37772. Can we do Zinc Plating on part after phosphating? (June 26)
43592. Porosity problem in nickel plating (June 24)
38212. Trivalent blue passivation over cyanide-zinc: Need 96 hours Salt Spray open Q. (June 24)
31034. Can we improve our tin plating to 240 hours Salt Spray? open Q. (June 24)
10089. Can you cadmium plate aluminum? (June 23)
25560. How to avoid Step test failure in Ni-Cr plating? (June 23)
36051. Blistering on Cadmium Plated Steel Parts after Chromate Passivation open Q. (June 22)
33829. Anti-tarnish for gold plating (June 21)
34692. Gold plating imitation jewelry open Q. (June 21)
04770. Nickel plated copper lid is blackening when cleaned open Q. (June 21)
35342. Watermarks in chrome plating open Q. (June 21)
21250. Why is Zinc Plating changing colors? (June 19)
25024. Electrodeposition of titanium open Q. (June 19)
04515. Gold Plating general question open Q. (June 14)
25432. Zinc-Nickel Plating turned dark in 10 days (June 13)
12634. What to substitute for unavailable Nickel S-Rounds? (June 7)
02394. Plating to look like brushed stainless steel open Q. (May 31)
29744. Procedures For Zinc-Nickel Plating open Q. (May 30)
15871. Nickel-Tin Plating Problems open Q. (May 30)
60455. Zinc plated parts fail 96-hour salt spray after molding step (May 24)
48431. Excessive nitrates in Trivalent Chrome plating bath? (May 23)
36516. Pitting in alkaline zinc iron plating process camera open Q. (May 19)
23301. Formulas for gold and silver brush plating solutions (May 16)
43916. Cyanide spots and stains in brass plating open Q. (May 14)
30106. Zinc plating thickness vs. salt spray resistance (May 12)
06354. Citrate-based silver plating solution? (May 11)
38877. Edges are bright, but center is dull in zinc plating camera (May 9)
01269. Reducing stress and increasing ductility in bright nickel plating (May 9)
01103. Copper plating has nodules (May 9) ) vip
51694. Gold plating is rough, not smooth open Q. (May 8)
08297. Neutralizing sulfuric activating solution before alkaline zinc plating open Q. (May 5)
44964. Black Nickel Plating Bath Formula, Analysis, & Effect on Hardness open Q. (May 4)
47178. Hard Chrome Plating needs more Salt Spray Test hours open Q. (May 2)
31926. Cad plated parts are failing waterbreak test preparatory to priming open Q. (April 26)
00023. Ruthenium Pen Plating Solution isn't dark enough open Q. (April 25)
56203. Silver plating on kitchen utensils (April 19)
28863. Cyanide Copper Plating Problems (April 17)
35265. How to clean corroded copper before tin plating (April 17)
45763. Is Black Zinc Trivalent Coating Conductive? (April 13)
17382. Citric Acid for Nickel-on-Nickel Plating? (April 11)
60422. Zinc electroplating onto a galvanized surface open Q. (April 7)
23685. Rose gold plating open Q. (April 7)
23303. Nickel Plating Adhesion Problem open Q. (April 4)
34107. Zinc-plate appearance problems (white, powdery, rough surface) open Q. (March 29)
12412. Brighteners and Silver Plating (Potassium Cyanide bath) open Q. (March 29)
60352. Acid vs Cyanide gold plating solutions camera open Q. (March 28)
23686. Gold Bath Amp-Minute Calculations (March 28)
60416. Bright gold plating is fine, but matte finish gold plating fails corrosion testing (March 25)
60411. I polished the parts, then the plating shop plated them ... (March 21)
20395. Rhodium is too porous for corrosion resistance (March 17)
40492. Rusty Satin Nickel Plating camera (March 17)
57461. What to do about an excess of carrier agent in nickel plating bath (March 13)
60410. Reduce cycle time for nickel plating (March 12)
33364. Silver plating on top of tin plating (March 10)


45977. EN Staining Issues open Q. (August 18)
37785. EN Ni-P plating works by DC supply only (August 10)
60486. Bottom-up fill electroless copper plating technology applicability open Q. (August 2)
30406. Pitting Problem on Copper Plated ABS (July 10)
21840. Oxidation of immersion silver coating on PCB (July 10)
57929. Formula for electroless nickel plating solution (July 8)
44367. Plating of Small Polished Steel Balls (June 25)
43950. White Rust on Electroless Nickel Plated Parts camera (June 21)
16897. Electroless Nickel Plating on 316SS Electrolyser Electrodes open Q. (June 21)
60460. EN Nickel delaminating (June 14)
36730. White stains in electroless nickel plating of pendants open Q. (June 7)
42907. Brown stains on electroless nickel plated materials camera (April 18)
053. Jump starting electroless nickel plating onto copper and brass (April 5)


07846. PVD coating on stainless: is clearcoat needed open Q. (August 17)
35541. How to achieve a Black PVD finish on Stainless Steel open Q. (August 14)
28527. Base coats and top coats for vacuum metallizing (July 7)
12547. Bias sputtering (June 21)
43412. PVD coating very small parts (March 19)


24491. Protecting edges of galvanized cable trays open Q. (August 13)
40753A.Starting-up a Galvanizing Kettle: stacking Zinc Ingots (August 12)
53170. Galvanizing irregularities & defects open Q. (August 12)
57860. How to avoid Fish-boning on galvanized surface camera (August 4)
59756. Colour tinting on galvanised finish (July 26)
25997. Prevention and removal of white rust on galvanizing (July 24)
58242. Buffing galvanized metal (July 11)
56867. Galvanizing rejected for poor appearance camera (July 9)
15377. Need to build or buy a Hot-Dip Galvanizing Kettle open Q. (July 5)
60382. What is the deposition rate of flux on steel in galvanizing? (June 28) vip
38915. Peeling problem in galvanizing of steel camera (June 27)
43365. Hot dip galvanizing flux Q & A's, Problems and Solutions (June 24)
40753. Galvanizing Kettle melted, why? camera open Q. (May 22)
49676. Calculating the cost of too-thick galvanizing open Q. (May 7)
50428. Fluxing in pure zinc chloride? (May 2) vip
57322. Thick Galvanized Coatings, How to Get, What is Maximum (April 4)
07666. Hot Dipped Galvanized Coatings: G90 vs. G60 (March 24)
45719. Hot dip galvanizing: what is reasonable dross & ash material loss? (March 20)


47534. Galvanising is bridging a gap (July 24)
01150. Alternative to glycerol for removing iron from black oxide bath open Q. (June 21)
40943. Black oxide thickness & salt spray requirements for muddy & dusty application? open Q. (June 14)
11740. Steel wool removes bluing (May 3)
06688. Blackening Process for D2 Tool Steel (April 18)
03278. Black Oxide Smut Test (April 17)
19006. Black Finish for Stainless Steel camera (March 28)
0  982. A fast way to get "slow rust finish" (March 25)
07077. Black oxide on top of black nickel plating (March 17)

    2g. OTHER INORGANIC FINISHING: Mechanical Plating, QPQ, Metal Spray, Zinc-rich Dip-Spin Coatings, etc.

41952. Poor Dacromet Adhesion open Q. (August 20)
10012. Field applied Galvanized Zinc Coatings? Cold galvanizing compound spray open Q. (August 18)
13026. How Graphite Coating is Done, and What Are the Properties of the Coating (June 24)
20713. Dip-spin zinc-rich coatings on nylon insert nuts open Q. (June 20)



51966. ED (electrodeposition/e-coating): anolyte, ultrafiltration, bacterial growth open Q. (August 18)
45328. Low pH Problem in CED / E-coating Bath (July 25)
34780. Repair E-Coating Scratches? open Q. (June 30)
32574. Roughness in CED coating (June 15)
46042. Recovering paint from Autophoretic rinse with Ultrafiltration open Q. (June 3)
26147. Autophoretic coating adhesion issues open Q. (June 1)
11694. E-coat adhesion problem open Q. (May 31)
13029. Salt spray test failure of CED coating in 600 hours (May 5)
57561. Pin holes in CED e-coating camera open Q. (April 1)
18067. Uneven CED coating open Q. (March 24)


39523. Powder Coat Failure on Aluminum Railings camera open Q. (August 16)
33851. Powder coating in Faraday area (August 8)
23988. What is root cause of rust on a powder coated steel cabinet? camera (July 29)
43619. Fish eyes in powder coating operation open Q. (July 28)
50258. Baking powder coating in my kitchen oven (July 21)
01369. Epoxy powder coating of stainless steel open Q. (July 21)
59750. Expiry date of powder used in powder coating? (July 18)
46160. New powder coating over old camera (July 10)
  4745. Powder Coating on Galvanized Steel open Q. (April 26)
18491. Poor impact resistance of Powder Coating on top of CED Coating (April 25)
44567. Can chrome lip on a wheel withstand the heat when powdercoating? (April 17)
55855. Effect of resin on reducing Faraday cage effect open Q. (April 17)
60428. Decreased powder flow when coating lower racking arms open Q. (April 8)
46158. Powder Coating of PaintLok steel (March 26)


45245. E-coating for silver jewelry open Q. (February 27)
60395. Why did our brass parts turn reddish brown? (February 22)


23536. Spray finish of silver nitrate, "Chrome look" paint" video open Q. 2nd Request (August 15)
15909. Mixing Formula for Plastisol open Q. (August 12)
30522. Clear coating to seal a rust patina finish on metal open Q. (July 5)
16257. Is it necessary to paint the Galvanised Pipes/Plumbing (June 20)
30598. Lawnmower coating -- anti-stick? (May 9)
15246. Formulation for silicate paint open Q. (March 31)
26316. Teflon to rubber bonding (March 29)
60408. Coating Adhesion on sanded vs. unsanded 1018 CR Steel (March 26)
04016. Scratch resistant coating for Poly Carbonate drinkware (March 22)



  5204. How to control Dry Lube finish thickness? (June 1)
60445. Need to selectively get right patina colors to make a world globe (April 25)
15330. Cold blackening of copper is coming out red (April 18)


47242. Hydrogen embrittlement relief for parts having areas of different hardness? (August 16)
11803. Solder testing failure camera open Q. (July 7)
09998. Hydrogen embrittlement failures in cadmium plating open Q. (June 21)
01216. Silver Plating fails notchbar tests despite hydrogen embrittlement relief before & after plating (May 15)
01747. Chrome plating turns yellow after hydrogen de-embrittlement open Q. (April 19)
01397. Dewetting issue on products plated with nickel and tin (April 18)
56819. Discoloration from Hydrogen Embrittlement Relief after Plating (March 20)
44008. Is H2 embrittlement relief required for cad plated 15-5 PH? open Q. (March 10)


48674. Removing/stripping black oxide finish open Q. (July 20)
60470. Can't strip 1923 Hubcaps with magnetic metallic coating open Q. (July 7)
29778. Stripping trivalent chrome with TKPP open Q. (June 22)
41112. How to remove Powder Coating open Q. (May 30)
60419. How to remove PVD from Plastic? (April 17)



13432. Titanium Etch pre FPI open Q. (August 20)
50132. Q&As on Operation of ASTM B117 Salt Fog Test Chambers (August 12)
60471. Calculating plating speed with Hull Cell (alkaline zinc plating) (July 10)
60462. Determine % Iron in Nitric & Ammonium Bifluoride Pickling Bath for Stainless Steel open Q. (June 19)
35573. Black spots observed in Salt Spray test open Q. (June 4)
56043. Copper Plating of MIG Wire: How to Check Adhesion? (May 31)
60442. Where to buy Hull Cell "Stress Tabs" (April 23)
18375. Thickness checking methods for Zinc Nickel electroplated components (April 18)
17894. Sodium Hydroxide: How to make to 0.5 M strength (April 4)
11434. Cyanide Copper plating Solution Analysis open Q. (March 31)
22320. What is a Hull Cell Test, Why is it done, Where to Get a Hull Cell, More ... (March 31)
60420. Plating that withstands hydrogen chloride acid open Q. (March 29)
03999. How to distinguish between zinc and cadmium metals? camera (March 24)
36214. Analytical procedure for Selenium Copper blackening solution? (March 19) vip
46657. Process/Procedure for Cross Hatch Test - Measuring Adhesion by Tape Test (March 3)


60494. Convert cooling tower water to make up water for D M Plant open Q. (August 19)
39370. Removal of Zinc from 140000 ppm to 3 ppm in wastewater open Q. (August 18)
07245. Reducing COD in waste water open Q. (July 29)
02576. pH measurement in D.I. vs. distilled water (July 25)
14924. Hot Tank Evaporation Rates open Q. (July 11)
01410. Organics and Complexes in Electroplating Wastewater open Q. (July 5)
12873. Silica removal from water open Q. (June 24)
30932. Ion Exchange / DM plant calculations (June 15)
41130. Alternative uses for high TDS waste from RO system? open Q. (June 13)
40394. Cyanide plating waste water treatment (May 30)
60447. Reducing smallest trace of salt on the surface before coating (May 11)
07063. Recovery of copper from electroplating and etching solutions video (March 20)
60409. Disposing of nickel acetate and copper acetate solution (March 13)
60403. Excessive amount of caustic to treat effluent from pickling plant (March 10)


20858. Can we use nickel under gold plating on flatware? open Q. (August 20)
14264. Safety of chicken wire in a barbecue grill (August 19)
44260. Danger of frequent skin contact with galvanized steel (August 18)
10986. Swallowing Muriatic Acid (August 16)
23964. Is eating food cooked on a chromed cast iron griddle a health concern? open Q. (July 30)
21703. Is galvanized desk organizer safe? (June 21)
29590. Testing food for Nickel open Q. (June 19)
34002. Dangers/Toxicity of inhaling muriatic acid fumes (June 1)
11017. What if you washed your hair with deionized water? (May 23)
16433. My husband is sick from welding galvanized steel (April 23)
09098. Fumes from burning or welding Galvanized Iron (March 19)


60493. Hypalon Rubber Rollers in Pickling Line Are Failing (August 19)
06364. Suggested Way to Bring Power to Titanium Plating Basket open Q. (August 17)
60488. Plating Shop Modernization (August 2)
30044. Scrubbing of NOx fumes open Q. (August 2)
00194. Forklift operators damage tank heaters (July 27)
52466. How to reduce steam conductivity? open Q. (July 18)
05142. Materials of construction for zinc phosphating tank and accessories (June 19)
36682. Rectifier for Ammonium Chloride Acid Zinc Plating - Air or Water/Oil Cooled? open Q. (June 14)
00181. Temporary Class 5 (100) Cleanroom Paint Peel Repair open Q. (June 6)
49155. Short term storage of HCl in Steel Tank open Q. (May 18)
29985. Conveyor chain is lurching (April 17)
60417. Rinse tank turns brown in a short time camera (March 25)
60389. Boiling nickel plating solution turns dusty parrot green camera (March 18)


12526. Sand blasting standards: Swedish SA 1, SA 2, SA 2.5, SA 3 vs. NACE open Q. (August 14)
50746. Stainless passivation with nitric acid (July 10)
57140. Confusing Nitric Acid "%" Spec (June 13)
48221. Difference between MIL-C-5541E, AMS-C-5541, and MIL-DTL-541F? (April 28)
35197. Questions about zinc electroplating specification Fe/Zn8 open Q. (April 24)
60444. Metal Finishing Blueprints (April 23)
15001. GMW14872 Mass Loss Target Ranges for Coupons open Q. (April 4)
46175. We need NADCAP certification (April 1)


30536. Correct abbreviation for Stainless Steel (July 8)
26629. Difference between MFZn2C and PFZn8C open Q. (June 20)
58218. Bichromate vs passivation (June 19)

    5g. REACH, RoHS, EOL Directive; Cd, Pb, Cr+6, Nitric Acid & Phosphate Replacements

42062. Corrosion resistance of trivalent vs. hexavalent chromate open Q. (July 11)
39839. Surface Chromium Increase for MIl-DTL-5541 Expected? open Q. (May 22)
35470. What's the big deal with RoHS and REACH Compliance? (May 15)


49686. Pin Rust and Spot Rust on CRCA Product open Q. (August 17)
39602. Will Alodine harm 4130 bolts? open Q. (August 14)
15043. Copper wire remains hard after annealing open Q. (July 30)
01207. Is En8 grade suitable for Carburizing? open Q. (July 18)
60480. Aluminum spring material open Q. (July 18)
51470. How to achieve hardness up to 45-50 HRC on C45? open Q. (June 20)
60456. Stress Relieving a Brazed Stainless & OFHC Copper Part open Q. (June 15)
16945. 101 Q&A's about Corten weathering steel open Q. (May 14)
55972. Black stained areas on annealed surface open Q. (May 6)
29294. Are some stainless steels more resistant to yellowing when heated? open Q. (April 22)
50226. Difference between Stainless Steel grade 304 and 202 open Q. (March 18)


35677. Anodizing aluminum and brass together open Q. (August 20)
06082. Difference Between Chrome and Nickel Plating (August 18) open Q.
43774. Restoring bleach damaged silver (August 15)
15419. Plating my rose gold ring with rhodium (August 15)
03331. Home anodizing project in stainless steel tank? (August 15)
60490. What type of wood finish reacts chemically with gold and silver (August 14)
24875. Cleaner for Revereware copper-bottom pots & pans open Q. (August 14)
22132. Will Topaz gemstones withstand gold plating? (August 14)
33780. Rhodium plating on 14 kt white gold necklace. Is it removable? open Q. (August 13)
26415. Hobby nickel plating and chrome-look paint (August 13)
24253. Polishing brass and painted brass open Q. (August 13)
06062. Voltages for Brush Electroplating open Q. (August 8)
08229. Removing stains from bath tubs (August 4)
17903. Muriatic acid rusted our stainless steel appliances (August 4)
20443. Fine silver plating on Sterling silver (August 4)
10270. Rhodium plating a filigreed ring open Q. (August 2)
56727. Gold Plating Iphones and mobile phones (August 1)
41124. Q&A's Replating of Silver Rings open Q. (July 31)
42850. Sourcing clear chromate for zinc plated parts (July 31)
33616. Gold Recovery for Dummies open Q. (July 30)
21693. Sealing Aluminum to prevent oxidation? open Q. (July 29)
33774. Gold plating over sterling silver? (July 29)
46735. Painting old freezer with rust bleeding through (July 29)
44933. Looking for "NicSand" Aluminum Oxide Sanding Gel open Q. (July 28)
07423. Refinishing an old wood stove camera open Q. (July 21)
38227. Cleaning milky stain from Aluminum wheels open Q. (July 21)
39311. How to Do Brushed Nickel Plating (July 20)
60483. Brushed raw aluminum chairs needing cleaning and protection (July 20)
00779. Removing tarnish on bronze open Q. (July 20)
53424. Replating Old Gold Plated Coach Decoration camera open Q. (July 18)
46505. Sublimation Coating Q&A (July 11)
34112. Steel patio furniture corrosion resistance? (July 11)
11385. Brass bed refinishing and cleaning (July 11)
33611. Muriatic Acid for Fuel tank cleaning? (July 10)
07074. Power Supply for Home Anodizing (July 10)
08502. Can I have my ring rhodium plated? open Q. (July 9)
27814. How to Recover Platinum from Catalytic Converters open Q. (July 7)
34618. Putting silver in the dishwasher (July 7)
16885. What caused a dime to turn copper colored? camera open Q. (July 5)
34627. Cleaning Galvanized Metal and Keeping It Shiny open Q. (July 5)
02606. Rust finish for galvanized tin? (July 4)
07290. Lining bottom of BBQ with galvanized sheet (July 3)
16429. Sealing regrained Brass Building letters (June 30)
26495. OEM red oxide, nitrocellulose lacquer & acrylic alkyd in the 1960s open Q. (June 30)
18884. Hoyt Metal Ingot. What type of metal do I have? camera open Q. (June 28)
39089. Joining polypropylene straws for art project open Q. (June 28)
35556. Cleaning charcoal grill cooking grates? open Q. (June 26)
41930. Galvanic Corrosion between Steel and Aluminum (June 25)
43912. Restoring metal antique toy cars open Q. (June 24)
35145. Chemically Removing Copper Color from Brass camera (June 24)
27488. Is Eugene Ferner silver casserole dish Sterling or plated? camera open Q. (June 23)
19866. Cleaning permanent marker from zinc tabletop (June 23)
17968. Protecting "Living" Oil Rubbed Bronze (June 23)
15804. How to solder silver camera (June 23)
33644. Want rainbow coating on a crowbar (June 22)
00085. Can I turn electroforming rectifier off when I go out? (June 21)
01152. Clearcoat on top of powder coating (June 21)
41066. Laziest way to clean aluminum ruined by dishwasher (June 21)
26801. Solving an electrolysis problem in home plumbing open Q. (June 20)
11789. Vinyl coatings on metal open Q. (June 20)
38402. Making tobacco pipes out of copper open Q. (June 20)
07897. Aluminum gutter pinholes (June 20)
06773. Q&As about Gold Plated Flatware (June 19)
01198. How to Darken Bronze (June 19)
40194. Galvanized "Tin" Kitchen Countertops open Q. (June 19)
31614. Don't rely on powder coating to seal brass plumbing fixtures open Q. (June 17)
38492. Reactions between Aluminum and Lime open Q. (June 15)
33775. Can paint be mixed with fiberglass resin? open Q. (June 15)
40345. Did plating shop corrode my wheels? camera (June 13)
15689. Why does stainless flatware rust? (June 13)
60291. Green Dust on the car chrome camera open Q. (June 12)
41124. Q&A's Replating of Silver Rings (June 3)
58797. Trying to identify a 1950s anti-corrosion automotive metal finish camera (June 3)
09922. 1950 brass lamps -- need to remove pink dye (from a sticky-note) open Q. (May 31)
02662. Preserving heat coloring of copper open Q. (May 31)
33795. Painting procedure for motorcycle fuel tank? (May 30)
60331. Extending corrosion durability beyond 'normal' hard coat anodizing? open Q. (May 23)
37324. Rhodium allergy? open Q. (May 23)
46317. Copper plating motorcycle parts? (May 23)
46476. How to Matte Tint Electroless Nickel Plated Aluminum open Q. (May 15)
56879. Old Pistol Finishes: Chrome or Nickel, Original Plating or Replated? open Q. (May 12)
18848. Painting brass faucets and handles (May 11)
16370. How to refine gold foil without using borax or any acid? open Q. (May 8)
31886. Finishing secrets for Parawood tables, chairs & furniture open Q. (May 8)
11172. Preparing acid copper brightener (May 6)
34446. Chlorine tablet stains on stainless steel (May 5)
49880. Aluminum horse trailer corrosion protection (April 25)
45132. Where to find Didi Seven cleaner? open Q. (April 24)
42007. Fix White spots in Walk-In Cooler open Q. (April 21)
10337. Jeweler plated my vintage gold ring too bright (April 18)
60431. Replating Vintage Refrigerator Handles camera open Q. (April 17)
25718. Copper pipe is turning black open Q. (April 14)
13218. Removing paint from nickel plating camera (April 14)
16033. Remove Oil From Waste Water At Home video (April 12)
06590. How to paint a galvanized metal roof open Q. (April 11)


39386. How to electrodeposit copper nanoparticles open Q. (August 20)
14167. Electrode polarization (August 18)
53795. Chemical for heat production in Geo-polymer concrete open Q. (August 13)
20323. Brass Finishers in the 1800's open Q. (August 9)
59614. Electrodeposition of Beryllium - guidance please (August 8)
08007. What part does current density play in electroplating? (August 4)
60484. Anion membrane is brittle open Q. (July 27)
23519. Silver plating with silver nitrate (July 26)
07136. Lattice constant of stainless steel? open Q. (July 20)
00098. Electroplating with niobium. Electrodeposition of niobium open Q. (July 18)
53509. Conductivity coatings for heat sinks open Q. (July 15)
60461. Rusting rates of Steel vs. Zinc (July 7)
34810. Chromium III vs Chromium VI Plating processes open Q. (July 7)
18697. Variation in thickness of nickel plating open Q. (June 27)
56553. Composition of 'Brightener' for Acid Zinc Plating bath open Q. (June 21)
29131. Extraction of nickel from a spent catalyst open Q. (June 19)
39965. NO2 industrial Production Process open Q. (June 17)
29046. Hard chrome plating by circulation (May 31)
0  601. Electroless Copper Plating on Alumina (May 9)
60449. Sizing calculations for an electroplating line (May 9)
30594. How to dissolve tin sulphate in water open Q. (May 2)


11675. Understanding and converting resistance, resistivity, conductance, & conductivity (August 18)
19816. What are some things that are electroplated? (July 7)
09716. Blue colour in copper sulphate solution! HELP! (May 11)
11566. Lemon juice as electricity source (April 20)
32807. Nails rusting science project open Q. (April 18)
26613. Plating silver onto copper with silver nitrate (April 18)
11194. Magnesium ribbon and hydrochloric acid reaction (April 13)


07278. Building Black-Powder Cannons open Q. (August 20)
07156. Boric acid as eye wash (August 20)
00757. Servicing NCR Drawer so it shuts open Q. (August 15)
26176. Tanker Desk Restoration Tips open Q. (August 13)
14995. Excessive Iron in Swimming Pool Water (August 4)
29544. Drain lines back up (July 30)
23922. Musty smell in basement and throughout entire house open Q. (July 27)
60481. Cleaning oil from silicone kitchen equipment (July 18)
20150. Fineness of gold is lower after smelting (July 7)
32428. Epoxy Coating Copper Piping rather than Re-piping open Q. (June 30)
01178A. Accelerating Tarnish and Aging Silver open Q. (June 21)
21024. Chromate poisoning from concrete work? (June 12)
60458. Author asks about feasible medieval metal recovery process (June 12)
13277. How long does it take for natural gas to corrode copper pipes? (June 9)
38657. Measuring thickness of mill scale open Q. (May 31)
15053. Boric acid -- safe for humans? (May 30)
21527. Body chemistry and sterling silver (May 30)
09128. Copper Sulphate as Swimming Pool Algae Remedy? open Q. (May 25)
22525. How much ABF and HF for bathtub etching? (May 12)
19039. Cast Iron Cook Stoves: Where to find parts and how to restore open Q. (May 3)
53795. Want a chemical that heats up when mixed with water open Q. (April 24)

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