Ted Mooney, P.E. RET
- Pine Beach, NJ
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0. Choosing a finish, corrosion
22143. 316 Stainless Shaft Gets Grooved by Radial Seals - September 25
12117. Deposition of Aluminum onto Steel then Anodizing - September 25
45129. Anodizing vs. Powder Coating of Aluminum? - August 28
61705. Matching Finishes between Aluminium and Copper Parts - August 24
16945. Corten Steel -- Q&A, Applications, Problems - July 5
61679. Blackening Hot Dip Gal/Bright Zinc Parts - June 28
61629. Which coating is suitable to 1440 hrs SST - June 20
42140. Connecting aluminum: Stainless or zinc plated screws? - May 27
16063. Zinc hinges for lockers at salt water pool - May 25
61630. Options for using tin plated terminals above the rated temperature? - May 21
61670. Trying to match cast aluminum valve cover finish - May 16
61665. GI vs. CRCA for Office Metal Furniture - April 27
19766. Galvanic Action between Galvanized and Stainless Steel? - February 8
37526. Want gold colored finishes without use of gold - February 5
20345. Salt spray or CASS hours for electrophoretic lacquer on PVD on nickel plating - January 24
16945. Need to know steel mill that produces Corten Steel - January 10
61618. White flow marks caused by new PT line
- January 5
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1. Preparation
1a. MECH PREP topics: "Grinding, polishing, vibratory finishing, buffing, honing"
61723. Mirror polishing very small hardened steel components - September 25
61715. Shot blasting for acidic electroplating - August 21
61708. Spots on steel parts from tumbling - August 19
61692. Need Brush Finish on Steel Plates RFQ open to all: Washington - July 25
61675. Aluminum Panel is Mottled after sanding, buffing, waxing - May 27
5396. Ra surface finish -- is it microinch or micrometer - May 16
29744. Is Abrasive Cleaning Needed for Proper Zinc-Nickel Plating Adhesion? - May 7
38491. Microfinish comparator finishes, visual roughness guide - April 25
6053. Stainless steel vibratory finishing Q&A
- March 1
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1b. CHEM PREP topics: "Cleaning, pickling, etching, phosphatizing, activation"
61745. Problem aluminum phosphating mild steel - October 9
0960. Black impression after zinc phosphate Inquirer often helps others, so especially deserves our help - September 23
61691. Zinc Phosphate - Coating Continuity Problem 2nd Request - September 23
53095. What is the best frequency range (28-40 HZ) for ultrasonic wax & degrease removal? - September 17
61728. Which chemicals for heat-treated Monel? - September 9
61707. Effective Replacement of HCl as Pickling Bath - August 19
9146. Chemical & Electropolishing of Brass: solutions, procedures, references - August 15
133/66. White Stain after Phosphating Die Castings - August 5
61701. Precleaning steel wire before plastic coating at high speed - August 1
43711. Can pickled pipe be cut to fit - July 25
61681. Phosphating of Nickel Zinc electroplating Inquirer often helps others, so especially deserves our help - July 15
16827. Zinc Phosphating: Improving the Formula - July 2
37409. Zinc Phosphate Tank Turnovers - July 1
56325. Removing carbon layer from mild steel - May 21
48600. Phosphating: Can't dissolve zinc oxide in phosphoric acid - April 28
168/27. Zinc Phosphating: Improving the Formula - April 23
34052. Manganese phosphate coating: issues and answers - April 22
15596. Rinsing a Cleaner that contains Sodium metasilicate - April 5
61654. Manganese (II) Oxide and manganese phosphate coating - March 27
61650. Testing the concentration of titanium phosphate bath - March 20
61646. Dry Acid salt for brass and Zamak parts - March 3
61599. Zinc phosphate coating is black and peels off - February 5
56325. Removing carbon layer from mild steel - February 2
61625. Electrocleaning of Nickel
- January 4
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1c. Capping, plugging, masking, taping
61747. Protective masking for stripping and re-anodizing - October 9
61735. Masking my CZ Shadow for Plating - September 22
27343. Masking for Nickel Plating - September 2
61590. Masking/Stop off for anodizing on complex parts
- January 24
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2. Metallic & inorganic finishes
2a. STAINLESS, TITANIUM, CORROSION-RESISTANT METALS PROCESSING
12146. Refinishing scratched stainless appliances - October 9
2629. Component burned all the way through from electropolishing - September 24
55376. Pickling & Passivating 410S stainless steel per ASTM A380? - September 9
44070. Durable black coatings for stainless steel - August 28
44070. Durable black coatings for stainless steel - August 19
47682. White patches after electropolishing cobalt chromium material - July 15
5358. Algae, fungus, bio-fouling in plating tanks? - July 4
5422. Alcohol Is Making Electropolished Stainless Steel Peel - May 30
61669. SS430 Wire Has Black Spots. Why? - May 20
61668. 304 steel continuously generates dark residue - May 20
20840. 303 Stainless Steel Passivation Problems - April 15
14182. Frosted, etched, or burnt passivated parts - Type 303 stainless steel - April 14
51990. Parts turn black in Wood's Nickel Strike - March 21
11047. Should electropolishing voltage/amperage be ramped? - March 21
61643. Must welding tint be removed before passivation - March 7
26187. Stainless tank with NaOH at 360 °C at 128 bar - February 27
47682. Electropolishing and Chemical Etching Processes for Cobalt Chromium - February 5
14697. Chatter-like marks after electropolishing?
- February 2
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2b. ANODIZING AND LIGHT METAL TREATMENTS (Aluminum, Magnesium)
61744. Black Anodize Blemishes & Spots - October 9
61737. Is Discoloration an Etching Problem? - October 9
61726. Black dust on dyed black anodized aluminium - September 28
27990. Anodizing is Flaking Off of 7075 Aluminum Parts - September 28
61700. Need titanium anodizer for multi-color sheets for kitchen cabinets RFQ open to all: London UK - September 25
60068. Aluminum sheet shows stripes after chromate conversion coating - September 23
61736. Affect of water on 6061 anodized aluminum - September 21
617/41. Aluminum certified as the same etches differently - September 18
24236. Epoxy primer not adhering to conversion coated aluminum (failing bend test) - September 9
144/62. Spot type seal check for black anodized aluminum - September 5
51573. Anodizing rectifier & chiller sizing - August 28
42362. What were the two types in the old Mil-C-5541 spec? - August 27
61716. Odd porosity on anodized threads AFTER sealing - August 26
43484. Low Anodizing Thickness in Gap between Plates - August 26
61529. Anodized Aluminium edges not taking dye very well - August 12
6784. Need 0.5 Ra after Anodizing - August 6
40035. Desmut can't remove black coloration from etching - August 5
61699. Alloy wheels: is chrome plating or anodizing better? - August 1
34822. Temperature limit for chromate conversion coating on aluminum - July 25
61690. Improve Labeling Process on Anodized Aluminum - July 25
61689. Current Density for Electropolishing Aluminium - July 24
61688. Best pretreatment for tin plating on aluminum? - July 24
61687. Chemical No. 21 Ferric Nitrate Bright Pickle of Magnesium - July 24
36275. Sandblasting aluminum parts prior to Alodine coating - July 24
30512. Best Sulphuric Acid Concentration & Influence on 720 Rule - July 15
61674. Some Black Anodizing Came Out Blue - July 4
61239. Dye keeps flaking off along with some of the anodize - July 1
14851. Salt Spray Results vs. Panel Preparation - June 19
56581. Rainbow effect / defect on anodized aluminum? - June 15
1594. Eliminate stray currents in stainless seal tank - June 5
36556. Coatings on Aluminum for Electrical Insulation - June 4
61653. Shot Peening & Anodization to Maximize Fatigue & Corrosion Resistance of 6082-T6 - May 30
44778. Hard Anodizing Defects: stains on brand new Kawasaki forks - May 27
616/73. Brite Dip & Anodizing on sandblasted aluminium shows white spots/blooms - May 25
61656. DI Water is Etching Anodized Aluminum in the Cleaning Line - May 20
9519. Plating on Aluminum Q&A - May 3
61664. Magnesium corrosion with TCP treatment - May 3
41531. Cleaning anodized parts with acetone and ultrasonics stains them - April 14
48664. Wet Tape Adhesion Test per MIL-DTL-5541 - April 3
37317. Hexavalent chrome in surface of chromic acid anodized parts - March 21
61636. Black Marks on Extruded Aluminum I-Beams - March 20
9142. High Thermal Emissivity for Aluminum Electronics Boxes - March 19
56977. Mirror polishing thin aluminum sheet on both sides without warping - March 10
26894. Problems in cold sealing of anodized aluminum - March 2
61637. Halo spot in Hard Coating 6061-T6 Aluminum - February 22
43248. Two-step" black anodizing has reddish powder on it - February 19
61626. Trouble with Iridite 14-2 only on 2024 - February 19
61639. White patches only when anodizing 60xx - February 19
3437. Anode to Cathode Ratio, Size, Spacing, Placement in Anodizing - February 12
61633. Methods for evaluating surface preparation steps during the anodizing process - January 29
43777. White spotting on black (and red) anodising - January 11
59981. Calculating required aluminum anodizing time - January 11
53012. Electrolytic Etching of Aluminum
- January 10
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2c. ELECTROPLATING and ELECTROFORMING
61749. Need parts plated to GM-6164M RFQ: Jackson, MI - October 9
61748. Purple Color on Filter of Gold Cyanide Plating Bath - October 9
61740. Can We Chrome Plate Super Duplex S32760 - October 9
61686. Zinc Plating Peels Off Stainless Steel During Crimping Process - October 9
55225. Alkaline zinc plating problem: Black dots/spots - October 8
12879. Rack mark / jig mark problems in electroplating - October 8
49009. Chrome Bath Help: Chrome to Acid Ratio - October 7
34023. Nickel-Chrome plating on Brass Problems - September 29
61720. Hard Chrome VI plating throwing power problem Inquirer often helps others, so especially deserves our help - September 23
61615. Zinc plating with blue passivation is yellowish at holes - September 23
61603. Zinc Plating has white & red rust without a cause - September 23
13356. Zinc Plating of 12L14 Leaded Steel - September 23
61738. Acid Zinc Plating Bath White Appearance - September 21
61734. Cleaning Porous Pot Cathodes - There's gotta be a better way! Inquirer often helps others, so especially deserves our help - September 17
59181. Need Electroplating on 3D Printed Jewelry RFQ: San Diego, CA - September 17
61729. Is This a Chrome Plating Defect? - September 17
12243. Black Spots when Tin Plating Brass - September 9
61725. Hard chromium plating rate is way low Inquirer often helps others, so especially deserves our help - September 8
61722. Lead plating of umbrella wires/tubes - September 7
17311. How to do copper plating on aluminum roller? - September 5
52602. Grayish black spots over time in zinc plating - August 29
61717. Separating copper and nickel for optics - August 28
61713. Accidentally Put Dechrome in Chrome Plating Tank - August 21
61710. Fluoborate Copper plating process - August 21
61709. Plating blisters observed on tin finish after annealing - August 21
61703. Tri-chrome chloride bath stain - August 10
61702. Zinc-Nickel Plating -- Dark Deposit in LCD Area - August 5
1503. Platinum Plating: How to Determine Replenishment - August 3
61694. Hazy white tips on long pins (alkaline zinc plating) - July 31
2964. What is a Wood's nickel strike? - July 31
61696. Diamond plating on Aluminium - July 30
51179. Alkaline copper plating contaminated with phospho copper - July 22
61683. Cyanide Gold plating Q&A - July 15
61684. Constant current platinum plating -- why does voltage vary? - July 5
61680. Using Zinc Cyanide as Sodium Cyanide Replacement in Cadmium Plating - July 2
11172. Brighteners for acid copper plating - June 21
56121. Sulfamate nickel plating on copper is dull and milky - June 15
56272. Copper plating onto Silver - June 15
61647. Want Consultant for Copper & Silver Barrel Plating on Stainless Steel RFQ open to all: Manila - March 3
15218. Can Sulfur Free Nickel Crowns Replace S-nickel? - May 30
61587. Black stain spots in satin chrome, plus burning - May 28
48074. Hard chrome plating problems 2nd Request- May 27
61662. Stannous sulfate turns brown in storage - May 22
61657. Electro-purification (dummy) methods for electroplating tanks - May 20
33774. Gold plating on sterling silver, Vermeil - May 16
26738. Silver Plating & Brighteners Q&A - May 14
61666. Cast Iron Dies Won't Re-Chrome - May 9
3025. Pitting in acid tin plating - May 6
37167. Nickel plating: Can't Get Enough Thickness - May 6
2454. Gold potassium cyanide gets cloudy below 3.9 pH - April 13
58336. Cadmium Cyanide Plating is Yellow instead of Olive Drab - April 12
58298. Oil mark issue in satin nickel plating - April 5
2797. Nickel Striking/plating on stainless steel problems - March 24
52562. Color gold/color gilding: Rose/pink/brown gold plating methods & issues - March 20
55624. Zinc plate steel wire then draw it, or draw it then plate it? - March 20
30106. Zinc plating thickness vs. salt spray resistance - March 10
61645. Classification for evaluating corrosion in salt-laden atmosphere - March 1
0350. Nickel & Gold Plating peels off of Tungsten-Carbide - March 1
61634. Voltage spikes and amperage drops in Cu-Sn plating - February 27
39520. Copper exposed on parts that are supposed to be nickel - February 26
61640. Spotted cadmium - February 19
40169. Tin plate Blistering - February 19
25163. Expired Lead Frame effect on Plating Quality - February 2
9144. Scratches on Hydraulic Cylinders: Mechanical Damage or Plating Defects? - February 1
38475. Alkaline Non-Cyanide Zinc accumulates Zinc oxide or other material at bottom of tank - January 29
28127. Alkaline zinc plating thickness - January 28
61621. Blue spot/growth on a silver plated component - January 16
61628. Surface Area Calculations for Rough Castings
- January 4
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2d. ELECTROLESS PLATING, PLATING ON PLASTICS, IMMERSION PLATING, CHROME-LOOK SPRAYS, LIQUID METAL COATINGS
34541. Electroless Nickel with PTFE Plating Problems - September 9
61724. Silver mirroring puddles on glass, oxidizes at the edges - September 8
61711. Need Cosmichrome in California RFQ: California - August 21
61608. Electroless copper plating onto wax - August 1
53623. Electroless Plating onto LCP Engineering Plastic - August 1
61693. Electroless Nickel vs Bare Aluminum: Thermal Performance - July 25
61682. Electroless Nickel Plating over Electrolytic Nickel Plating - July 2
61678. Electroless Nickel Plating: Want Consistent Darkening - May 30
52480. Yellow Stains on Electroless Nickel Plating Inquirer often helps others, so especially deserves our help - March 21
4726. Nickel-Chrome Plating on ABS Plastics - March 19
44444. Silvering formulas using silver nitrate
- March 3
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2e. PVD, CVD, ION IMPLANTATION, VACUUM PROCESSES
7846. PVD coatings: color control Q&A's, Problems & Solutions - August 26
28527. Vacuum Metallizing Gets Hazing as soon as Top Coated - August 5
61651. ZrN has sufficient salt spray test resistance but TiN doesn't - March 23
40590. Need TiN coated stainless sheets
RFQ open to all: Las Vegas NV - February 20
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2f. GALVANIZING, ALUMINIZING, HOT TIN DIPPING
61743. Galvanizing Vats Overheating ... Quantifying Damage to Kettle - September 30
61741. Agitation of Galvanizing Flux Inquirer often helps others, so especially deserves our help - September 28
45309. White spots left by coolants on galvanized steel - August 19
61698. Planning a small HDG plant - August 18
38205. Galvanizing problem: Excessive aluminum in zinc - August 12
46006. Questioning the quality of galvanizing - July 15
49676. How to calculate/measure the thickness of zinc coatings - June 21
61676. Galvanization is peeling when bead blasted - June 15
55997. Galvanizing Kettle Dust Collector - Bags Get Oily & Wet - May 12
55564. Titrating for the concentration of HCl in galvanizing flux - April 14
54149. Top Dross is growing since we started filtering - March 20
49192. Galvanizing buildup on MIG wire weld areas - March 11
51659. How much hydrogen peroxide to treat flux tank? - March 11
56867. Spotting, Staining, Blackening of Hot Dip Galvanized Finish - March 10
61641. Having trouble heating the flux bath - March 1
49328. Cost to open a hot dip galvanizing business? - February 20
49271. Zinc ammonium chloride requirements for galvanizing flux - February 19
20172. How tough is galvanneal steel? Will it rust if the coating is penetrated?
- February 5
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2g. BLACK OXIDE, BLUING, COLORING, PATINAS
36214. Formula for cold blackening / cold black oxide - October 6
11776. Standards for Oiling of Black Oxided Parts - September 10
1150. How to Get Clear Coat Look from Gun Bluing? - August 3
20713. How can nylok nuts be black oxided? - June 5
59418. Passivation after black oxide? - March 29
54394. Black Oxide on stainless steel: problems - March 21
61635. Hot Black Oxide Issue- brownish-green parts and black spots/streaks
- February 12
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2h. OTHER INORGANIC FINISHING: Mechanical Plating, Nitriding & QPQ, Metal Spray, Zinc-rich Dip-Spin Coatings, Sherardizing, Rust Preventatives, etc.
28621. Geomet 750 Hp galvanizing - August 6
55366. Ferritic Nitrocarburizing has red color to it? - June 15
52675. Process Comparison for Tufftriding and Nitriding - March 20
40139. Rust spots on pickled coil after a few days - September 1
26940. Sursulf Processing Q&A, Problems & Solutions - April 4
3. ORGANIC FINISHING [PAINT, POWDER COATING] . . .
3a. ELECTROPAINT PRIMING, AUTOPHORETIC COATINGS
32574. Ra Increase Caused by CED Coating - July 5
42582. How to perform Acid MEQ of CED Bath manually? - July 4
32574. Dust problem in CED coated GI parts - July 4
56160. Bubbles in e-coat
- May 13
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3b. POWDER COATING
52455. Actual costing of powder coating in India - October 6
61704. Powder Coating on Zinc Plating with White Rust - August 20
61677. Will Powder Coat Survive Etch and Chromate - July 1
61658. Powder Coat Paint issue -- missed areas, fisheyes? - June 15
61667. Smut on powder coated parts after curing - May 14
41802. Will Tin Plating survive a Powdercoating fluidized bed? - April 30
52690. Powder Coating has roughness/bumps under it - April 22
42644. Pinhole problems in powder coating - February 13
39593. L.a.b. CIELAB color issues: gloss variation, matching different finishes, etc. - February 4
61627. Powder Coating of "Black Annealed" CRS
- January 3
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3c. LACQUERS, CLEAR COATS, ELECTROPHORETIC TINTING, ANTI-TARNISH
23047. How to Measure Resistance in CED Bath? - May 28
47125. Electrophoretic lacquering for costume/imitation jewelry - April 27
61193. Protecting metal surface with thousands of tiny grooves that trap dirt
- March 1
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3d. PAINTING, PRINTING, ADHESIVES AND OTHER ORGANIC COATINGS
61730. Epoxy ink fisheyeing on TGIC-polyester powder coating - September 10
25774. Scratch marks are appearing in ABS Parts after painting - July 2
57147. How to make stainless steel non-conductive - June 6
55615. Painting or powder coating the inside of hydraulic tanks? - May 21
40308. Gluing Stainless steel to chrome/copper/alloy plate - March 5
46505. Sublimation Coating Introduction, FAQs and Q&A - February 23
15909. Plastisol & Solvent Ink Formulas & Improvements - February 5
6926. Painting anodized aluminum
- February 1
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4. POST-TREATMENTS
4a. CHEMICAL POST-TREATMENTS [CHROMATE CONVERSION COATINGS, RUST PREVENTATIVES, PATINAS, COLORIZING]
38577. Need Iridite 17p RFQ: California - September 7
36879. Chromating of Zinc-Nickel Plating Q&A - April 27
37772. Can zinc plated parts go on for zinc phosphating? - February 4
34323. Verifying anti-tarnish for copper plating
- January 13
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4b. BAKING AND NON-CHEMICAL POST-TREATMENTS [HYDROGEN EMBRITTLEMENT AND DE-EMBRITTLEMENT, ANNEALING, WHISKERS, SOLDERING, REFLOWING]
26968. Properties of 2024 T351 - August 13
51253. How to solder chrome - July 29
1747. Does Thicker Chrome Plating Need Longer Hydrogen Embrittlement Relief? - May 16
33891. Forged Parts Break under Load after Zinc Plating - May 13
33431. How to improve the solderability of tin electroplating? Peel-off & Blistering - April 27
28294. Post plate baking of EN coatings
- June 25
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4c. STRIPPING, REWORKS, ETC.
61695. TiCN stripping from D2 base metal - July 29
3974. How to Remove Black Oxide Finish - July 25
50193. How to Strip Chromic Passivation from Brass - July 25
2076. Removing anodizing from aluminum - June 19
37569. Nickel stripper for aluminum, question about ingredients - May 15
61648. How to strip nickel from copper plate - March 5
33203. Need paint stripper not harmful to plastic - March 3
22156. Stripping electrophoretic CED coatings
- February 2
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5. SUPPORTING ISSUES
5a. ANALYSIS, LAB TECHNIQUE, Q.A., SALT SPRAY TESTING
56140. Analyse Chloride in Chrome Plating Solution -- - July 11
8904. Salt Spray Hours vs. real life exposure - May 3
44485. XRF and Plating Thickness Measurement - March 7
50132. ASTM B117 Salt Fog Test Chamber Operational Q&As, Problems: Salt Spray Woes - March 3
0644. Copper Sulphate Test on Gold Plated Part - March 1
35573. Acceptance criteria after salt spray test - February 19
61638. Need lab SOPs for electroplating shop - February 16
36184. Is titration the best method to analyse copper content of ore? - February 5
41654. Determine % Nitric Acid. Titration? Conversion factor? - January 29
6060. Test for Type 316 vs. 304 Stainless Steel - January 9
18778. Analyzing acid tin baths -- bright and matte - January 9
61619. Salt Spray and Cyclic Corrosion Test for Assembled Parts
January 4
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5b. WASTE & WASTEWATER TREATMENT, POLLUTION CONTROL
61746. Determining if WWT sludge is hazardous? - October 9
12375. Remove Copper from Plating Waste - September 23
61714. Sludge from ETP plant - August 21
44241. Neutralization of Chrome after Plating - May 9
59691. Sodium Metabisulfite and its reaction with water - March 26
7063. Recovery of copper from electroforming solution
- January 7
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5c. SAFETY ISSUES, EMISSIONS, TOXICITY, ENVIRONMENTAL IMPACTS
40657. Inhaled fumes from Bleach and C.L.R. accidentally mixed - September 20
61727. Popping Popcorn in Galvanized Buckets -- is it safe? - September 8
32977. Diatomaceous Earth and Shellfish Allergies? - August 21
20858. Toxicity of stainless flatware - June 6
54906. Stainless pot left on burner; are the fumes dangerous? - April 23
61661. Strange taste & throat closing while wire sanding mystery metal - April 23
55787. Has anyone been diagnosed with Parkinsons after working in the chrome plating industry? - March 10
19953. What is the toxic effects of mixing muriatic acid and bleach? - March 4
6852. Cyanide Poisoning Issues - February 2
47195. Toxic Lead & chrome in coffee makers & espresso machines?
- January 13
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5d. PLANT & PROCESS ENGINEERING, CONSTRUCTION
123/73. Zinc oxide production by French process? - September 19
617/33. Heating Chrome tanks with Hot Water in Lieu of Steam - September 16
61721. Titanium Grade for Aluminum Anodizing Jigs - September 7
43515. Air Agitation of HCl Pickle Tank - August 14
61697. Shop suddenly plagued with process problems RFQ: Florida - July 31
61685. Plating Is Thinner at Same Amp-Hours than Historically. Current Leak to Ground? - July 8
2077. Alternate cathode materials for anodizing tanks - June 28
27638. Production of silver potassium cyanide from silver nitrate
- January 23
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5e. QUESTIONS ABOUT SOFTWARE, SPECS, BOOKS, EDUCATION, INDUSTRY STATS, HISTORY, ETC.
61632. Does MIL-C-5541 forbid a "Do Not Etch" instruction? - September 17
42362. MIL-C-5541 Chemical Conversion Coat -- Legacy Q&A's - August 26
34214. MIL-DTL-5541 Adhesion tape testing - August 26
15518. Adhesion testing per ASTM D3359 with Permacel P-99 discontinued - August 5
18869. Standard/allowable tolerances on zinc plating - May 25
9101. Molybdenum disulfide prohibited on 17-4PH? - May 3
26629. I Want to Know about MFZn 8TC Plating - May 9
51970. Need specification QQ C-320 "Electrodeposited Chromium" - April 27
44376. Boeing finish codes Q&As - April 17
61506. FAIR 9102 Question re. Chromating & Anodizing
- January 19
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5f. W...W...W...WORD OF THE WEEK
57140. Procedures QF-09-162 & QF-09-163 for nitric & chromium analysis?
- March 30
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5g. MOSTLY METALLURGY; Heat Treatment
61672. Refine Stainless Steel from 316 to 316L - May 28
58484. Can't obtain any Carpenter BG42 -- what steel is similar? - May 22
54607. Inconel 625 Tubes Have Insufficient Chromium on Surface after Sizing - May 22
25525. Tin/nickel interdiffusion Q&A - April 23
12545. Annealing 316 Stainless Steel Tubing
- March 1
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5h. PRECIOUS METAL RECOVERY
33616. Gold Recovery for Dummies - September 28
27814. How to Recover Platinum from Catalytic Converters - August 2
346/76. Best and Easiest way to refine gold dust to get 99.9% purity - June 19
47967. Recovery of silver from trays, dishes, tea sets - May 21
41239. Recovery of gold from polishing dust, sweeps, floor dirt - May 11
14022. Recover gold from gold plated rims - April 12
43983. Is this ore/rock Palladium & Rhodium - March 1
20033. Recovery of fine floating gold - January 27
50167. How to separate copper from silver
- January 11
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6. NON-INDUSTRIAL ISSUES
Hobbyists, DIY, Around Home
28963. What could be causing the pitting and corroding to chrome fixtures - October 8
2662. Preserving heat coloring of copper when clear coating - October 6
44380. Nickel plating, how much SLS for wetting agent? - October 6
30186. Lime-Away Damaged Stainless Steel Sink - September 19
33143. Stiffel Lamps: need screws that hold laurel leaves - September 10
22903. Ospho prep left tacky film - September 8
61718. Barbell discolored in storage - September 2
19105. Found a silver penny - August 29
16304. Need 29 Emtek Brass Door Knobs Refinished RFQ open to all: Texas - August 28
38628. Gold plating of lead - August 28
12841. Arcing, Popping & Hydrogen "Explosions" in Plating - August 27
38137. How to Paint Bathtub Jets - August 19
37205. Sterling silver vs. silver plate -- How to tell? - August 11
10664. Touching up powder coated aluminum outdoor furniture (Tropitone) - August 10
20240. Penny isn't copper color - what do I have? - August 5
55951. Home nickel plating with vinegar and salt - August 1
8575. Remove Water Stain from Teak - August 1
60191. Restoring black exterior door hardware - August 3
16699. Want Geneva Metal Kitchen Cabinets RFQ open to all: New York - August 2
30522. Clear coating to seal a rust patina finish - July 31
14995. Fixing Brown Rusty Water (Excess Iron) in Swimming Pool Water - July 24
23245. What paint for Wellie gumboots? - July 14
18519. Cleaning & polishing gold plated flatware - July 8
15267. Daisy BB Guns / Air Rifles and Their Black Nickel plating - July 5
38809. Antique baby carriage restoration RFQ open to all: Massachusetts - July 1
39638. Gillespie Antique Restorer - June 26
24079. Nickel plating is peeling off nickel - June 23
5465. Zinc-nickel plating on aluminum - June 20
57688. Repair metal roof with fiber silver coat - June 15
4785. Polishing Silver with Aluminum Foil and Washing Soda -- Thanks 24 years later! - May 28
36210. Painting posts of recycled plastic - May 27
20988. Silver Damaged by Hydrogen Peroxide - May 9
8937. How to refinish cast iron and cast bronze fireplace surrounds - April 27
37205. Sterling silver vs. silver plate -- How to tell? - April 27
11988. Cleaning an old copper kettle for apple butter - April 25
38061. Silver polish (Tarn-X) stained my stainless steel sink - April 23
61663. Mustard Stripped the Copper Plating from Tart Pan - April 22
61659. Vintage Kerosene Lamp: cleaning Copper Plating & Japanning - April 16
25553. Nickel plating of copper cooking utensils - April 14
34076. Artistic copper plating from hydrochloric acid - April 14
7229. How to refinish brass lamps - April 6
20967. Gold/Silver plating of natural objects Q&A - April 5
20193. Chroming carbon fiber/plastic - March 30
21868. Rings Made from U.S. Coins - March 29
0338. Zinc plating & chromating of Carburetors - March 26
30965. Can't remove old plastic protection film from stainless steel - March 21
52028. Staining on anodized aluminum window frames - March 21
26845. How to paint a stove top - March 20
61649. Electroplating as forge welding prep - March 20
61644. Oxide Finishing - March 3
56879. Have Blue Gun, Want it Chrome appearance - February 8
4148. Ruined the finish on my stainless steel fridge - February 8
61631. How to Remove Zinc Phosphate from Frying Pan - January 20
41214. Sticky surface after anodising - January 19
21595. Remove black antiquing from my Citadel class ring - January 18
38108. Jewelry cleaner took finish off ring - January 7
21437. "Rainbowing" and "Bluing" Stainless Steel
- January 7
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6b. RESEARCH, THESIS TOPICS, UNIVERSITY & POST-GRAD STUDENTS
61739. Electroplating V, Zr and Ti - September 28
61719. Electroplating: Role of a chemist - September 10
28889. Measuring the pH of air - August 24
61712. Galvanic Issues with Nickel-Plated Aluminum vs. Stainless? - August 21
61652. Coating stainless steel part using PTFE dispersion open - March 26
52366. Hard chrome plating: Volts, Amps, Anode-to-Cathode Distance - March 21
3795. Achieve uniform thickness in Cobalt-platinum electroplating
- February 15
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6c. K-12 Science Projects, Grammar & High School Student Questions
53795. Which chemicals can produce power? - May 22
0865. Brass electroplating for amateurs and students - April 20
28434. Electroplating with copper sulphate for science project
- February 24
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6d. The Artists' Corner
24061. Finish for Bare Steel -- linseed oil? - August 10
61671. Best Coating for Cast Aluminum Sculpture RFQ open to all: New York City - May 20
50348. How to Make Stainless Appliances a Champagne Gold Color - April 16
61624. Antique French cast metal lamp figurine is what metal? - January 14
0085. Copper electroforming is too red
- January 4
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7. DRIFTED OFF FINISHING, BUT INTERESTING :-)
2259. High Temperature Adhesive for Mica to Silicone Rubber - September 23
29370. 'Tycoon' Hallmark - September 10
23897. Identify this unique lamp - August 18
61706. Kitchen Floor Stained by Glue Trap - August 18
9941. Why is this penny silver? - July 15
20323. Brass Finishers in the 1800's / 19th century - June 20
54890. Theda Sterling Silver Medals, Crosses, Jewelry Q&A - June 15
61660. How to fix/weld this lamp metal - April 21
1178u. How to remove silver tarnish - April 14
18481. Is our sulfur well water safe for our dogs? - April 14
10153. Sedgwick Residential Elevators Parts and Maintenance? - April 13
32413. About sweet spirits of nitre (the traditional folk medicine) - April 13
61655. Stovetop Cast Iron Trivet Maker and History? - March 29
41759. Where to get replacement leg caps for vintage chrome dinette - March 25
11377. Taking antique brass beds apart - March 22
44464. Who invented words? - March 21
13393. Remove Brown "Varnish" (periostracum) from Shells - March 7
60399. Bleaching Saguaro (Cactus) Skeletons - February 22
11284. Normal weight 2015d nickel shrunk to size of a penny - February 2
33143. Stiffel lamp Q&A's
open Q. - January 22
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