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Current Topics:

 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


31020. Galling problems camera open Q. (May 22)
60764. What Shiny Coating to Use for 3-D Printed Aluminum Casting? open Q. (May 21)
06474. Chrome vs. Electroless Nickel Plating for CPVC Extrusion Die (May 14)
23685. Rose gold plated and lacquered zipper sliders are tarnishing open Q. (May 11)
60744. Removing rust and restoring yellow chromate color (April 27)
37526. Want gold colored finishes without use of gold camera (April 23)
47731. Rust on 304SS in Water Treatment Plant (April 19)
28470. Treatment for Concrete Release on Steel Forms open Q. (April 18)
02310. Conductive Coatings for Brass and Copper (April 10)
03354. How to avoid corrosion in SS316 material in presence of chlorine gas (April 3)
03606. Corrosion resistant coating for 1018 Steel motorcycle parts (April 3)
25010. Galvanized boat lift corrosion camera (April 2)
07897. Galvanic compatibility of aluminum and copper (March 30)
27848. Greenhouse Wire rack shelving for mushroom growing: Galvanizing or Epoxy (March 5)
24405. Switch fastener from zinc flake to "galvanic zinc coating" (March 5)
60698. Need help with a coating for my application - Threaded hole in steel cap (February 24)
27167. Stainless hardware is destroying aluminum pool pump camera (February 18)



03599. Brass sheets surface defects after polishing open Q. (May 20)
12526. How to reduce surface profile via sandblasting? open Q. (May 7)
44314. Polishing of Fountain pen nibs open Q. (May 3)
28824. Grinding HVOF coatings (May 1)
44536. Fire safety of Shot-blasting machines (April 13)
26572. Tumble polishing stainless steel (April 10)
06434. Need Random Surface Finish on Stainless Steel (April 5)
45366. Must stainless be full hard to obtain mirror finish? open Q. (March 29)
06753. Convert between Rz and Ra (March 24)
60704. Aluminium Tube OD finishing (March 2)


60761. Bronze infiltrated 420 SS printed item needs de-rusting/de-scaling open Q. (May 21)
18495. Electropolished stainless steel cable corrodes after long storage (May 14)
50566. Titanium chemistry in HF and HNO3 chemical milling (May 10)
58242. Pretreatment for powder coating (May 7)
45662. 3-in-1 vs 7-step pretreatment (May 6)
01655. Chemical polishing of stainless steel (April 10)
13862. What Limit to Use for Iron Content in HCl Pickling (April 9)
34052. Manganese phosphating coating failure on rub test what is the reason? open Q. (April 7)
20075. Can phosphatized iron casting last several years? (April 5)
46618. Is Citric acid for SST passivation 40CFR433? (April 4)
13366. Problems and solutions in zinc phosphating open Q. (March 31)
41404. Parts rusting after zinc phosphating open Q. (March 30)
47351. Free and total acidity in phosphating open Q. (March 21)
11268. Pretreatment sequence for zinc plating (March 18)
31148. Sulfuric acid and hydrogen peroxide pickling of copper? (March 15)
60708. Phosphatizing of cast iron sprockets open Q. (March 2)
39277. Pickling inhibitors (February 24)
15151. Stainless steel etching -- How To open Q. (February 21)
28680. Citric Acid vs. Nitric Acid Passivation (February 12)


58316. Liquid masking for anodizing (February 21)


    2a. ANODIZING AND LIGHT METAL TREATMENTS (Aluminum, Magnesium, Titanium)

45728. Alodine 1200S Problems open Q. (May 22)
33933. Conversion coating removal harmful to anodized parts? open Q. (May 22)
06559. Alodine 600 is getting contaminated with sulfate (May 6)
01574. Aluminum anodizing: Constant current vs. controlling the voltage (May 3)
26660. Anodizing Automotive Brightwork Q&A's (May 3)
32622. Want our cadmium plated yellow chromated machine screws black chromated (May 2)
18494. Black anodizing problem: some parts purple but thickness verified (May 2)
06326. Post anodize operations for glossy finish open Q. (May 1)
26113. Effect on surface finish of flash anodize open Q. (April 27)
52350. We believe we are successfully hardcoating at 65-70 ASF open Q. (April 26)
43451. Color variations in Chem film MIL-DTL-5541 (April 25)
36066. Aluminum Composite Panel Q&A's (April 23)
09494. Electroless nickel and hard anodizing on same part open Q. (April 20)
06930. Milky grey aluminum etch bath - can it be fixed? (April 18)
41023. Cloudy finish on Chemical bright anodized profiles open Q. (April 15)
45421. Black spots in anodized aluminum (April 10)
01217. Dyeing after dichromate seal (April 9)
44433. "Close Looping" an Aluminum De-Ox System (April 9)
60727. Chromate Conversion Coating Post Packaging (April 9)
22139. Satin Anodized Aluminum camera (April 7)
03651. Chromic Acid Anodize with Stainless Racks? (April 6)
01081. Why does Alloy 2024 Burn in Hard Anodizing? open Q. (April 4)
28128. MIL-A-8625 Type II, chromate sealed parts have white patches camera open Q. (April 4)
10820. Salt spray test for anodized aluminum (March 31)
50143. Aluminum Sheet Warping after Chromating open Q. (March 24)
56597. Can Alodine/Iridite/Chromating be done with steel inserts already in place? (March 24)
33883. Problems in Plating on Die-cast Aluminum (March 18)
24066. Importance of nickel acetate in anodize sealing open Q. (March 17)
32786. Prevention of white rust during production of aluminum strip open Q. (March 17)
15232. Does anodised aluminium seal on its own? open Q. (March 7)
60707. Color Variation in Titanium Gold Anodize (March 6)
15733. Aluminum pretreatment for powder coating (March 3)
04408. How to make alum from anodizing solution open Q. (February 13)
58771. Spotting on aluminum parts with chromate finish (February 13)
21875. Corrosion on 2024 Chromate, Salt Spray Test (February 9)


20186. Improve Hard Chrome Plating Corrosion Resistance camera open Q. (May 22)
60765. Plating on silicon steel fails salt spray test quickly open Q. (May 22)
04996. Root cause for Hard Chromium plating defects open Q. (May 21)
28863. Problems in cyanide copper plating (May 21)
36223. Reactivating nickel plating (May 21)
09676. Problems with tin plating over brass (May 18)
47424. Brass Plating Zinc Die Castings open Q. (May 18)
40492. Satin nickel plating peels off open Q. (May 18)
01871. Hard chrome cylinder pistons rusted & pitted in a few weeks camera open Q. (May 14)
01006. Non cyanide copper plating Q&As / Problems & Solutions (May 12)
48074. Hard chrome plating problems: blackness in LCD (May 9)
30879. Plating thickness variation in hard chrome plating open Q. (May 9)
04925. Unable to get proper thickness levels in bright chrome plating (May 9)
53424. High quality plating of belt buckles (May 8)
07274. Anode Calculation for Chrome Plating Process open Q. (May 1)
40095. Zinc Plating of Wire open Q. (April 27)
02456. Opening a mini nickel plating industry (April 27)
31034. Can we improve our tin plating Salt Spray results? open Q. (April 26)
31850. Plating S.S. without a Wood's Nickel Strike open Q. (April 24)
00476. Alkaline non-cyanide zinc plating vs. acid zinc (April 19)
00706. Starting Nickel/Chrome plating. Is it worth it? (April 19)
28746. Trivalent Cr vs. Hexavalent Cr, difference please (April 19)
22644. Upper limit on plating speed with extreme agitation open Q. (April 18)
41906. Dummying Nickel Contamination from Copper Cyanide Bath (April 17)
25024. Electrodeposition of Titanium (April 15)
44771. Acid Copper Plating Problems (April 15)
29188. Plating of Internal Threads (April 11)
46258. Is clear zinc chromate discoloration permissible? (April 10)
60693. Microcrack density control in hard chrome plating open Q. (April 10) vip
50922. Platinized titanium anodes for hard chrome plating? (April 9)
22092. Black Ruthenium or Alternatives for Jewelry Plating open Q. (April 9)
53532. Rack marks on alkaline zinc bath / Pre-cleaning hot rolled steel open Q. (April 4)
00907. Zinc plating porous sintered metal parts (April 4)
01114. What voltage for white bronze plating? (April 4)
04846. Acid zinc plating of zinc diecastings open Q. (April 3)
11706. Bright nickel stardusting (March 29)
12525. Problems in tin-lead plating (March 29)
28708. Silver striking problem: coating is white (March 29)
45300. Estimating Surface Area for Electroforming (March 29)
00768. Black spots on electroless nickel and hard gold open Q. (March 27)
57351. Cadmium / Cyanide Bath Maintenance open Q. (March 22)
28851. Some problems with Process of Zinc-Nickel Plating (March 15)
30106. Salt spray test for zinc plated part (March 14)
47484. Chrome plating I.D. of Tube (March 8)
51293. Plating blind bores open Q. (March 8)
60711. Flip Chip Package Plating open Q. (March 5)
10089. Cadmium plating for buildup of undersize part open Q. (March 1)
60692. Chrome Plating Steel Parts Scrap Rate (February 28)
54564. Q&A's on Copper plating of gravure cylinders open Q. (February 23)
02593. Porous Pots to Clean Chrome Plating open Q. (February 23)
15756. Hard Chrome Plating Problems: Can't remove every spot from substrate open Q. (February 21)
05358. Bio-fouling of gold plating tank (February 17)
30106. How many salt spray hours for zinc plating without chromate? open Q. (February 16)
11800. Dots when acid copper plating open Q. (February 14)
03778. Ni-Cr plating on diecastings -- too much Cu, not enough Ni? (February 12)
34692. Imitation Gold Baths open Q. (February 11)
10242. Phosphating a zinc plated surface (February 11)
04836. Function of Chloride in Acid Copper Plating Bath (February 9)
29662. The Role of Sulphuric Acid in Copper Plating (February 9) )
32077. Black spots in zinc plating (February 9)
29495. Help with Zinc plating questions (February 9)


05519. Chrome plating of ABS plastic problem: warpage open Q. (May 9)
18471. Gold plating directly on ABS or PU foam? open Q. (May 7)
39230. Heat treating electroless nickel plating on aluminum open Q. (April 28)
16897. Problems doing Electroless nickel plating on stainless steel (April 17)
20973. Problems & Solutions in ENIG (Electroless nickel / immersion gold) (April 2)
13422. Immersion vs. autocatalytic vs. 'activating disk catalyzed' gold plating (March 29)
38067. Electroless nickel plating on aluminum -- Porosity problem open Q. (March 29)
11290. Difference between Nickel plating and Electroless Nickel plating (February 21)
57472. Go gauge enters I.D. before electroless nickel plating but not after (February 21)


49660. Brass plating on stainless steel? (May 22)
06125. Bright PVD Gold Is Okay; Matte Gold Won't Adhere open Q. (May 21)
34053. Titanium nitride doesn't adhere to glass (April 10)
28527. Base coats and top coats for vacuum metallizing open Q. (March 17)
13026. Integrated coatings on graphite heat exchangers open Q. (February 13)
45654. Argon regulator for desktop sputter coater (February 9)


24862. Zinc-phosphate pretreatment of galvanized steel (May 14)
60749. Galvalume Coils Have Non-adherent Bleeding Chromate Stains open Q. (May 10)
25997. Prevention of white rust on galvanizing (May 5)
34714. Controlling hot dip galvanized steel production for dullness or shine (May 5)
41209. Flux filtering machine? (May 5)
54149. How Can I Reduce and Remove Zinc Dross (May 4)
45651. How to stop hot dip galvanizing flaking open Q. (May 2)
29835. Galvanizing 101: pre-galv vs. hot-dipped galvanized video open Q. (April 15)
42394. Furnace dew point for NOF galvanizing line open Q. (April 5)
51810. Controlling Thickness in 275 g/m2 Galvanizing open Q. (March 29)
41367. Zinc consumption control open Q. (March 19)
38915. Peeling problem in galvanizing of steel (March 19)
41930. Anodized aluminum window frames screwed to a steel building (March 14)
54638. Kettle surface oxidizes immediately, leaving oxide lines on galvanized coating camera (February 19)


07605. Replace powder coating with black oxide (May 7)
01754. Blackening stainless steel in the field open Q. (May 2)
03278. Thickness of black oxide coatings open Q. (April 23)
60737. Stellite-6 Gets White Patches when Nitriding open Q. (April 19)
47183. Manganese phosphating on gun barrels is too light and thin (April 6)
36484. Black Oxide plating on Inconel 718 possible? (March 23)
48674. Are these brown spurs "blackodized"? camera open Q. (March 2)
34789. Difference between 'galvanized' and hot-dip galvanized steel? (February 23)
11628. White spots on Alumablack blackening camera open Q. (February 19)

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

60730. Are bullets (projectiles) ever mechanically plated? open Q. (April 10) vip
08591. Sherardizing then zinc electroplating stainless steel nuts & washers open Q. (March 30)
27794. Want durable patina on sprayed zinc open Q. (March 8)



51966. Electrodeposition/e-coating (CED) issues & problems open Q. (May 4)
23047. How to reduce paint thickness in Cathodic Electro Deposition (CED) system? open Q. (April 25)
11694. Introduction to electrocoating open Q. (April 18)
32574. Small dots like popping in body c zone open Q. (April 11)
46897. How to increase CED DFT (linseed oil base) open Q. (February 25)


04729. Powder coating chips off aluminum during pemming operation open Q. (May 14)
37147. Powder coating reclaim -- does anybody take recycled waste powder? open Q. (May 10)
44458. Powder coating in golden yellow open Q. (May 7)
36338. Yellow powder coating turning orange (May 5)
55323. Cissing problem in powder coating open Q. (April 30)
45155. Powdercoating stainless steel Q&A's (April 25)
43619. Fisheyes when Powdercoating Aluminum but not Steel (April 20)
18298. Problems in powder coating open Q. (March 29)
26699. Industry specs for powder coating thickness and testing methods? open Q. (March 18)
11023. Q&A's on Electrostatic Transfer Efficiency: Problems and Solutions open Q. (March 6)
34775. Yellow patches after powder coating open Q. (March 5)
32204. Powder coating problems on Aluminum open Q. (February 9)


37471. Can't find electrophoretic lacquering services (April 7)


25811. Paint Viscosity Chart / Cross-reference (May 22)
28407. TT-L-50 (Clear Acrylic Lacquer Aerosol) Replacement open Q. (May 8)
29692. Teflon recoating of pots & pans and kitchen utensils open Q. (April 28)
10691. Painting of zinc plated parts (April 18)
16305. Prep & paint 316SST in the field open Q. (April 18)
42007. Can I paint a walk-in cooler? (April 12)
10157. What metal primer to use to increase adhesion of PVC & rubber? (March 29)
35373. Flexible spray chrome (March 28)
43386. Chrome on plastic: spray on chrome process open Q. (March 24)
38677. Does a good surface finish make it difficult for paint to adhere open Q. (March 18)
26015. How to test a surface to see if coating is PVDF open Q. (March 2)
30522. Clear coating to seal a rust patina finish on metal (February 18)
40989. Stoving Enamel is Too Matte open Q. (February 10)
60689. 'Metallizing' (for architectural) finishing service (February 9)



60766. Trivalent chromate on steel (May 22)
31467. Want to manufacture Copper Bright Dip and Corrosion Inhibitor in house (May 3)
45598. Yellow chromate rubs off (April 19)
50709. Blue Zinc is turning yellow the next day open Q. (March 13)


44518. Tin plating turned brown from reflow (April 8)
47247. Ãcido de cobalto-cromo (Cr2CoO4) open Q. (March 23)
27766. Experimental method for quantifiable hydrogen embrittlement? (February 16)
43776. Silver Plated Copper Blisters when Brazed open Q. (February 12)


57202. Chemical to strip nickel plating (March 29)



03642. How to calculate % purity of citric acid by titration method? open Q. (May 14)
40408. How to digest stainless steel completely? open Q. (May 14)
08904. Salt Spray Hours vs. real life exposure (May 11)
38230. Steel & Aluminum allowed simultaneously in same Salt Spray Test? open Q. (May 9)
01185. Analysis of MSA tin sludge (May 9)
03907. Gluconate Analysis for Caustic Etch open Q. (April 26)
34601. Electroless Nickel Solution analysis open Q. (April 24)
00885. Analyze acid copper plating solution for chloride open Q. (April 19)
50132. Salt Spray Test -- ASTM B117 Operational Problems (April 18)
07192. R&R Study for Electroless Nickel Thickness (April 18)
51596. EDX: We dope, then don't find it all open Q. (April 15)
11434. Cyanide Copper plating Solution Analysis open Q. (April 9)
43467. Bath Analysis - Fluoride-Phosphate Conversion Coating open Q. (April 1)
55644. Etching Al 3104 without HF open Q. (March 28)
05183. How to prove our zinc plating was not passivated (March 23)
35573. Acceptance criteria after salt spray test open Q. (March 21)
60706. Wire plating: thickness test copper & tin open Q. (March 1)
09721. Need to buy or design/build salt spray chamber (February 17)
07041. Etching aluminum to reveal microstructure open Q. (February 11)


24103. Disposal of chrome waste open Q. (May 9)
34600. High Sulfate in nickel-chrome plating plant wastewater open Q. (May 2)
32633 Tube Settler sedimentation area open Q. (April 25)
35685. Chloride level in cooling towers? open Q. (April 25)
32443. pH of DM water is a mystery (April 18)
00016. Effluent from paint manufacturing is not clear after treatment (April 17)
24871. Rinsing and disposal of Alodine solution (April 4)
07245. Reducing COD in waste water open Q. (April 2)
12873. Silica removal from boiler water open Q. (March 29)
11853. What are the commercial non-ionic surfactants? (March 18)
48144. What is in chrome plating sludge? (March 17)
34502. DM / DI Water Plant regeneration: HCl vs. H2SO4 open Q. (March 17)
30932. Ion Exchange / DM plant calculations open Q. (March 8)
52466. What is Cation Conductivity (related to high pressure boiler) (March 4)
12215. High sulfates in wastewater after chrome treatment (February 23)
33620. Problems in Steam Generator water systems open Q. (February 23)
60695. How to remove dissolved oxygen from borewell water open Q. (February 19)
45127. Best pH for zinc plating wastewater? Excessive zinc (February 14)


40416. Aluminum oxide = health risks? open Q. (May 18)
40784. Is chrome plating safe for food processing tools or machines? (May 9)
15303. Is bronze flatware safe open Q. (April 24)
12778. Danger of copper sulphate (April 18)
20858. Toxicity of stainless steel flatware (April 15)
45056. Galvanized steel for planting vegetables (April 12)
21703. Galvanized stove and metal fume fever open Q. (April 9)
16433. My husband is sick from welding galvanized steel (March 29)
20432. Hydrogen Sulfide from Dumpsters Is Tarnishing Silver? (March 29)
22551. Is there danger in cast aluminum cookware? open Q. (March 27)
28963. What could be causing the pitting and corroding to chrome fixtures open Q. (March 2)
34002. Must muriatic acid tank be exhausted? (February 23)


00194. Calculate boiler size for heating plating tanks (May 14)
39416. Protect Concrete from Sulphuric Acid open Q. (May 8)
41610. Tinned copper motor connection wires turned green open Q. (April 26)
56947. Are Dual Rectifiers in a Single Box a Good Idea? open Q. (April 17)
60731. Materials of Construction for Nickel Acetate Seal open Q. (April 10)
17485. Tank Water Evaporation Estimates (April 10)
60725. Filter for Ag and Au Strike Baths (April 4)
60716. Design calculations and plant costing at micro level (March 20)
39965. How can I separate H2SO4 98% and HNO3 68%? open Q. (March 15)
50556. Protecting bus bar from corrosion in a plating shop (March 13)
21690. We want to build titanium plating racks (March 5)
09527. Starting a small plating business (February 23)
05142. Electric heaters for phosphate tank (February 21)
26187. What grade of stainless for caustic cleaner tank? (February 18)
50556. Copper Cables for DC low-voltage high-amperage open Q. (February 16)
02178. Improving energy efficiency in nickel electroplating (February 14)
21345. Dealing with rock hard Aluminum Etching Scale/Sludge camera open Q. (February 13)


60763. Charging customers for audits? open Q. (May 21)
60745. Ni-Cr treated DC 0.05/400 HV, etc. open Q. (May 2)
14585. Rhodium plating on silver jewelry open Q. (April 23)
26629. Need Honda spec MFZn.Ni1-B+TB3801 (March 8)
14434. ASTM B 488 question about gold strike (February 21)


03605. What is Alusil? Who can coat it on fuel tanks? (April 23)
60702. What is flash anodizing? (April 15)
60736. Need all details for PF ZN 8C plating open Q. (April 11)
29294. What does "premium quality" stainless mean? (April 10)
60710. Yellow metalgom coating (March 5)

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

48221. Repairing Type I Conversion Coating with Type II open Q. (May 14)
24431. Is SPI B3 Finish RoHS & REACH Compatible? (May 5) 2nd Request
57850. Supplier says trivalent chromate but not RoHS compliant (April 9)


51470. Hardening EN8 / EN9 parts. Q&A's, Problems & Solutions open Q. (May 11)
28871. How to Harden Type 316 Stainless (May 10)
12545. Oops! Carbon steel left in furnace overnight (April 6)
15926. Want Soft 18K Gold without Using Silver open Q. (March 29)
37249. Can 51 HRC EN8 Material be straightened? open Q. (March 21)
50226. SS 202 for casserole pots? (March 14)


If you don't join the fight, the days of independent sites like finishing.com are numbered.


32106. Gates & grills made of pipe are rusting (May 22)
35772. Rust treatment with phosphoric acid (May 18)
60756. Refining of platinum (May 14)
37544. Removing scratches on painted kitchen stoves and refrigerator doors open Q. (May 14)
60754. Treating steel frame of house boat for anti-rust and corrosion open Q. (May 11)
21693. Clearcoat for deeply brushed aluminum open Q. (May 11)
22490. Repainting aluminum swimming pool coping (May 11)
03331. Home brew aluminum anodizing help (May 10)
34112. Suitability of galvanised metal for outdoor furniture open Q. (May 10)
07074. D-I-Y Power Supply for Aluminum Anodizing? open Q. (May 9)
03066. Hardcoat Anodizing of Auto Wheels open Q. (May 9)
00085. Problems and solutions for copper electroforming open Q. (May 9)
38904. How To Intentionally Rust Metals Such As Jingle Bells & Safety Pins (May 8)
00946. Want to do Anodizing but can't get some of the chemicals open Q. (May 8)
50693. Help with removal of melted/burnt-on Teflon open Q. (May 8)
18486. Stainless flatware in the dishwasher (May 7)
06773. Is my gold flatware real gold plating (May 7)
16370. Dissolving gold in sulfuric acid open Q. (May 6)
11428. Painting metal to go on wall behind woodstove open Q. (May 3)
44251. Removing brass paint from a gold plated chandelier (May 3)
21209. Stripping the paint off a wrought gate and repainting (May 2)
41066. Aluminum kitchen stuff no longer shiny -- How to fix it? (May 1)
41483. Sealant for hot rolled steel floor camera open Q. (May 1)
18889. Recovering gold and silver from relay contacts open Q. (May 1)
17571. Refinishing Bathroom Faucets / Fixtures (April 25)
30186. Stainless sink stains white towels open Q. (April 25)
07137. Dirilyte gold-tone flatware: Cleaning / Polishing open Q. (April 25)
28968. What voltage is used to copper plate (April 25)
24936. 24 kt Gold Looks Like Copper (April 25)
00284. Bronzing a resin trophy (April 24)
11146. Replacement for corrugated iron roof open Q. (April 23)
00937. Anodize titanium to gold color (April 23)
38061. CLR stained my stainless steel sink camera (April 18)
47714. Expensive Chrome Wheels are "pitting" (April 17)
07164. Galvanized zinc for birdbath reservoir? open Q. (April 16)
02697. Electroblackening of Steel (April 16)
09549. What is black patina on old woodplane? open Q. (April 16)
26353. Cleaning gold that has been burned open Q. (April 15)
04913. Want to do Nickel Plating at Room Temperature (April 13)
34465. Pre-coating for sublimation transfers onto ceramic (April 13)
20443. Difference between pure silver and sterling silver (April 13)
35498. Painting outdoor aluminum furniture (April 11)
30700. How to tell if silver tray is lacquered open Q. (April 9)
08229. Baking Soda + Vinegar Etched My Bathtub (April 9)
49464. Cleaning up cement dust from sanding of concrete floor (April 9)
60729. Plating gun barrels with precious metals (April 9)
24229. Can I make concrete stains by dissolving metals in acid? open Q. (April 6)
16032. Cleaning/restoring vintage tin humpback trunk open Q. (April 5)
00161. Clear coating brass, copper and silver jewelry (April 5)
07423. Paint not sticking to Ospho open Q. (April 5)
03338. How do I stop copper from oxidizing? (April 5)
03003. Dissolving gold deposits for analysis (April 4)
12362. Coating tables and bar tops with thick clear pourable plastic camera (April 3)
16257. Painting galvanized sprinkler pipes (April 3)
22867. Why would yellow gold turn silver? (April 3)
02161. How can I tarnish or dull bright brass (April 2)
22541. Ceramic Coating vs. Powder Coating vs. Ceramic-powder Coating? open Q. (April 1)
00779. Remove patina from old ship's wheel camera open Q. (April 1)
08096. How to seal brass bed after it's restored? (March 30)
21724. Finish stripped off brushed stainless steel refrigerator open Q. (March 29)
23897. How do you identify if old lamp is brass or copper or bronze? (March 29)
06082. Difference Between Chrome and Nickel Plating camera (March 27)
29370. What does backwards c in a circle mean on jewelry (March 27)
25366. Inside of Cast Iron Tea Kettle is Rusting open Q. (March 22)
50888. Retouching metal furniture camera open Q. (March 22)
19519. Painting Fiberglass Tub/Shower Unit (March 22)
11385. Brass bed refinishing and cleaning (March 22)
13743. Maple Syrup Boiling / Evaporator Pans (March 21)
27662. Cleaning corroded pennies and coins (March 21)
44569. F.B. Rogers Silver item: 'The Log' camera open Q. (March 21)
21227. Sealing a Cast Iron Fireplace open Q. (March 21)
28610. How long should a rhodium plated black finish last? open Q. (March 21)
41124. Q&A's Replating of Silver Rings (March 21)
12453. DIY Anodizing problems (March 18)
15155. Darkening Process for Today's Pewter open Q. (March 18)
33611. Muriatic Acid for Fuel tank cleaning? open Q. (March 17)
35145. Brass is pink from improper cleaning (March 17)
23568. How long will brass lacquer last? (March 15)
52694. Leaving sterling silver unpolished open Q. (March 14)
46735. Did a magnet make my new fridge rust? open Q. (March 13)
48843. My 14kt yellow gold turned orange open Q. (March 13)
60712. Artistic electroplating of an engraved/recessed area (March 13)
53511. Separation of Gold metal from Gold Cyanide salt (March 7)
13432. Titanium Etch pre FPI (March 5)
41517. 14 kt Gold Plating is Too Dark open Q. (March 5)
17478. How to rust steel decoratively open Q. (March 5)
43254. How to Make Aluminum Corrode / Patina? (March 5)
41239. Recovery of gold from polishing dust, sweeps floor or dirty material open Q. (March 3)
35232. Clear coat sealer for cast iron (March 2)
43464. Expensive new gold rings discolor my finger open Q. (March 2)
30693. Refining silver from smithing open Q. (February 26)
32894. Melt old gold onto existing charms (February 25)
13388. Galvanized roofing for bathroom walls open Q. (February 24)
18751. Looking to yellow gold plate my 14kt white gold ring (February 24)
01284. Home Anodizing 6262 Aluminum open Q. (February 24)
34446. Muriatic acid stains on stainless steel (February 24)
39781. Remove tarnish & stains but not patina camera open Q. (February 23)
09404. Ultrasonic cleaning discolored my rings (February 21)
22507. Stripping silver with electrolysis camera open Q. (February 20)
24004. Nickel vs. Chrome for kitchen & bathroom faucets (February 20)
26845. How to paint a stove top open Q. (February 19)
07290. What kind of pipe for tent heater (February 19)
32971. Color Anodizing in Home Shop camera open Q. (February 18)
58136. Silver ring is now copper color (February 16)
04988. Can carbon-infused steel wok be seasoned? open Q. (February 13)
19713. Chemically Produced Copper Patinas open Q. (February 12)
00779. Removing tarnish on brass, copper, bronze (February 11)
13044. Mercury damage to gold jewelry can be fixed with coconut oil (February 11)
15969. Metal Coloring Using Solvent Dyes open Q. (February 11)
25357. My anodizing is soft and mushy (February 10)
31343. Remove silver fixer from rubber/plastic dental racks open Q. (February 10)
10480. Refinishing Antique Metal Bed Frame open Q. (February 9)


52520. FMEA analysis for Nickel Chrome plating open Q. (May 21)
31345. Manganese phosphate chemistry (May 21)
07372. Plating Thickness vs. Current/Amperage -- What is the Relationship? (April 7)
00555. Plating copper onto aluminum open Q. (April 2)
31663. Silver plating on aluminum open Q. (March 28)
08007. What is maximum silver plating rate for my conditions? (March 18)
11260. What is ammonium bifluoride and when should it be used? (March 18)
17623. Zinc Stannate Process open Q. (March 17)
20929. Is the amount of metal electrodeposited proportional to plating time? (March 17)
23142. Good selective coatings for solar absorber open Q. (March 2)
28617. Manganese electroplating [Electrodeposition of Manganese] open Q. (March 2)
02236. Preparation/Extraction of Potassium Cyanide open Q. (February 23)
60696. Metal question for our Latin scholars open Q. (February 23)
08223. Electroplating or vapor deposition of aluminum onto carbon open Q. (February 19)
40943. Black zinc plating vs. Black oxiding. What's the difference? (February 16)
10337. Removing the white gold from a white gold ring (February 13)
04555. Treatment of Electroplating Waste -- Student Project (February 13)
60690. Trivalent Chrome Electrolyte testing in lab (February 10)


09644. Reaction acid+metal (May 22)
21478. Acid + Carbonate = what reaction? (May 19)
53766. Generating Methane from Manure and Turning It into Electricity (May 16)
11194. Magnesium ribbon and hydrochloric acid reaction (April 18)
33641. What is the affect of using different voltages in the electroplating process? (April 15)
26899. What metals rust the fastest (steel, copper, bronze) (March 22)
31790. Waste treatment for silver nitrate experiment? (March 14)
57496. Why can't we store electricity in water? (March 7)
33608. Does Coke dissolve coins? open Q. (March 2)
32654. Science project: Rust in saltwater vs. fresh (February 18)
39965. Want to make aqua regia from HCl and H2SO4 (February 18)
48959. More science projects about rusting steel wool open Q. (February 16)


13393. Preparing sea shells for crafts or display open Q. (May 22)
60757. Sharpen multiple stainless tips sitting on a plate open Q. (May 14)
33143. Reassemble Stiffel Lamp camera open Q. (May 8)
29544. Washing machine drain line backs up open Q. (May 8)
19039. Cast Iron Cook Stoves: How to restore open Q. (May 8)
18029. Problems in White phenyl Manufacturing open Q. (May 7)
60748. N=N aromatic cleavage reaction open Q. (May 7)
29312. Making a Silver Catalyst Bed open Q. (May 2)
60705. Self-curing cast polyurethane? open Q. (May 1)
09868. Can lightning turn copper into iridium? (April 23)
47120. Melting Aluminum Scrap: Too much aluminum oxide open Q. (April 13)
15559. Silver extraction from waste hypo/fixer solution open Q. (April 13)
60732. Repair of Steel Pool filter - 3.5" hole open Q. (April 10)
26801. Solving an electrolysis problem in home plumbing open Q. (April 10)
11438. How to Make Iron Non-magnetic (April 6)
19953. Cleaning chlorine generator piping open Q. (April 6)
22253. Refining of Platinum & Palladium open Q. (April 1)
10631. Removing adhesive & grout from old tiles to reuse them (March 29)
53795. Chemicals that mix with water for heat reaction (March 27)
34676. Recovering sputtered gold from plastic? (March 24)
60717. Can red oxide under acidic conditions become a black oxide? open Q. (March 22)
19529. Refining of silver open Q. (March 21)
33365. Shafting and bronze bushing/bearing issues open Q. (March 17)
34532. Precipitating gold (March 14)
22201. Killing roots with copper sulphate (March 8)
14468. Volck oil emulsifiers? open Q. (February 28)
10153. Is a LULA lift a lift or an elevator? open Q. (February 19)
18886. Conch shell smells (February 13)


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