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172/59. Gold Plating a Kalash - 1/7/25

617/67. Looking for the hardest, unscratchable finish for jewelry RFQ: Idaho - 1/6/25

354/05. Copper/Aluminum interaction and galvanic/hydrolysis problems - 12/12/24

106/55. Tantalum Coating Processes - November 23

617/72. Choosing a metal finishing process - November 15

121/17. Deposition of Aluminum onto Steel then Anodizing - October 30

241/10. PVDF / Kynar® vs. Powder coating - October 29

277/02. Corrosion of silver caused by ZDDP (zinc based lubricant additives) - October 28

617/60. Zinc Plate vs E-Coat - October 22

221/43. 316 Stainless Shaft Gets Grooved by Radial Seals - September 25

451/29. Anodizing vs. Powder Coating of Aluminum? - August 28

617/05. Matching Finishes between Aluminium and Copper Parts - August 24

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525/93. Best Buffer RPMs for Polishing Aluminum? - 12/22/24

617/23. Mirror polishing very small hardened steel components - 9/25/24

617/15. Shot blasting for acidic electroplating - 8/21/24

617/08. Spots on steel parts from tumbling - 9/19/24

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  09/60. Best way to blacken zinc phosphate - 12/30/24

340/52. Manganese phosphate coating: issues and answers - 12/29/24

617/76. Mixed metal pretreatment configuration - 12/9/24

  14/04. Electropolishing of silver - 12/3/24

617/55. Anodic Electrocleaning vs electrolysis of rust - October 16

617/45. Problem aluminum phosphating mild steel - October 11

616/91. Zinc Phosphate - Coating Continuity Problem 2nd Request - September 23

530/95. What is the best frequency range (28-40 HZ) for ultrasonic wax & degrease removal? - September 17

617/28. Which chemicals for heat-treated Monel? - September 9

617/07. Effective Replacement of HCl as Pickling Bath - August 19

  91/46. Chemical & Electropolishing of Brass: solutions, procedures, references - August 15

133/66. White Stain after Phosphating Die Castings - August 5

617/01. Precleaning steel wire before plastic coating at high speed - August 1

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617/47. Protective masking for stripping and re-anodizing - October 9

617/35. Masking my CZ Shadow for Plating - September 22

273/43. Masking for Nickel Plating - September 2

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617/21. Can Titanium be Anodized in an Aluminum Anodizing Line? Inquirer often helps others, so especially deserves our help - 1/22/25

  90/61. Passivating Laser Cut Stainless Steel Problem - 1/22/25

  12/53. Electrical Properties of Passivated Stainless Steel - 1/6/25

460/41. Electropolishing 4xx / 400 series stainless steel - 12/31/24

309/65. Can't remove old plastic protection film from stainless steel - 12/27/24

  85/05. How to smoothly etch stainless steel materials - 12/26/24

214/37. "Rainbowing" and "Bluing" method for Stainless Steel - 12/14/24

315/41. Electropolishing stainless steel to a 'satin' finish - 12/6/24

335/04. Anodizing Titanium for Wear Resistance & Anti-Galling - October 18

121/46. Refinishing scratched stainless appliances - October 14

  26/29. Component burned all the way through from electropolishing - September 24

553/76. Pickling & Passivating 410S stainless steel per ASTM A380? - September 9

440/70. Durable black coatings for stainless steel - August 28

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339/33. Masking/stripping when chromate conversion and anodizing on same part - 1/26/25

617/89. Removing calcium & zinc from rinse water on aluminum anodizing line Inquirer often helps others, so especially deserves our help - 1/24/25

617/75. Aluminum in the 1930's: "Deplated Finish" - 12/27/24

432/48. "Two-step" black anodizing w/tin sulphate: Q&A - 12/21/24

617/87. Anodizing: missed one tapped hole; how to re-do? - 12/18/24

137/75. How to Chromate Conversion Coat ADC12 - 12/7/24

295/19. How to Mask for Hardcoat Anodize - 12/4/24

613/75. Chromate Conversion Coating as Paint/Powder Prep - 12/3/24

415/31. Ultrasonic cleaning of anodizing leaves white stain 2nd Rqst - 12/3/24

533/57. Slime/algae on surface of anodizing tank - 11/27/24

617/74. Anodizing: Small Area That Doesn't Dye - November 23

617/70. Simultaneous etch-passivation solution for aluminium pretreatment - November 18

144/62. Spot type seal check for black anodized aluminum - November 14

617/64. Skin products affecting dyed anodizing? - November 1

338/83. Problems in Plating on Aluminum (ADC-12) - October 30

617/62. Delay between Aluminum Chromate & Powder Coating - October 24

617/44. Black Anodize Blemishes & Spots - October 14

617/51. Problem dying anodized aluminum green - October 11

617/37. Is Discoloration an Etching Problem? - October 11

617/26. Black dust on dyed black anodized aluminium - September 28

279/90. Anodizing is Flaking Off of 7075 Aluminum Parts - September 28

617/00. Need titanium anodizer for multi-color sheets for kitchen cabinets RFQ: London UK - September 25

600/68. Aluminum sheet shows stripes after chromate conversion coating - September 23

617/36. Affect of water on 6061 anodized aluminum - September 21

617/41. Aluminum certified as the same etches differently - September 18

242/36. Epoxy primer not adhering to conversion coated aluminum (failing bend test) - September 9

515/73. Anodizing rectifier & chiller sizing - August 28

423/62. What were the two types in the old Mil-C-5541 spec? - August 27

617/16. Odd porosity on anodized threads AFTER sealing - August 26

434/84. Low Anodizing Thickness in Gap between Plates - August 26

615/29. Anodized Aluminium edges not taking dye very well - August 12

  67/84. Need 0.5 Ra after Anodizing - August 6

400/35. Desmut can't remove black coloration from etching - August 5

616/99. Alloy wheels: is chrome plating or anodizing better? - August 1

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617/34. Cleaning Porous Pot Cathodes - There's gotta be a better way! Inquirer often helps others, so especially deserves our help - 1/26/25

  53/01. Alkaline zinc plating rundown streaking - 1/24/25

144/61. Hard Chrome Plating on Inconel 625 - 1/21/25

617/91. Gold Plating thickness variation - 12/28/24

429/81. Cost of Metal Plating - 12/22/24

559/01. Gold plating color change - tarnish problem - 12/21/24

617/84. Nickel & Chrome Plating Rusts in 8 Hours - 12/21/24

617/81. Zinc plating & trivalent black chromate gives poor salt spray hours - 12/19/24

327/83. Replating chrome onto existing chrome - 12/18/24

490/09. Chrome Bath Help: Chrome to Acid Ratio - 12/14/24

126/37. Zinc plating on copper Q&A, Problems & Solutions - 12/12/24

158/09. Zinc plating with black Trivalent Chromate Fails Salt spray - 12/7/24

  38/92. Ti-Cd: Bath concentration okay, but weight percentage of Ti in plating is low - 12/3/24

540/61. Copper Pyrophosphate Plating for DMM Recording Disks - 11/28/24

61647. Complete Process for Cleaning, Cu, and Ag Barrel Plating - 11/28/24

288/51. Zinc-nickel plating makes metal dust when crimping - 11/27/24

617/25. Hard chromium plating rate is way low Inquirer often helps others, so especially deserves our help - 11/27/24

617/68. Cyanide Copper & Stannate Tin Process Questions - 11/25/24

236/32. Tin Plating Problems: black spots - 11/25/24

323/63. Acid zinc plating Anodes Q&A - November 19

617/71. Cadmium Density vs. Plating Speed Inquirer often helps others, so especially deserves our help - November 15

617/61. Nickel-Cobalt Electroplating - October 31

617/03. Tri-chrome chloride bath stain - October 30

318/16. Electroplated gold turns red - October 30

617/49. Need parts plated to GM-6164M RFQ: Jackson, MI - October 15

424/47. Egg Albumin Is Staining Nickel Electroforms - October 13

61752. Cyanide copper plating on zinc diecast - October 13

617/48. Purple Color on Filter of Gold Cyanide Plating Bath - October 9

61740. Can We Chrome Plate Super Duplex S32760 - October 9

616/86. Zinc Plating Peels Off Stainless Steel During Crimping Process - October 9

552/25. Alkaline zinc plating problem: Black dots/spots - October 8

128/79. Rack mark / jig mark problems in electroplating - October 8

340/23. Nickel-Chrome plating on Brass Problems - September 29

617/20. Hard Chrome VI plating throwing power problem Inquirer often helps others, so especially deserves our help - September 23

616/15. Zinc plating with blue passivation is yellowish at holes - September 23

616/03. Zinc Plating has white & red rust without a cause - September 23

133/56. Zinc Plating of 12L14 Leaded Steel - September 23

617/38. Acid Zinc Plating Bath White Appearance - September 21

591/81. Need Electroplating on 3D Printed Jewelry RFQ: San Diego, CA - September 17

617/29. Is This a Chrome Plating Defect? - September 17

122/43. Black Spots when Tin Plating Brass - September 9

617/22. Lead plating of umbrella wires/tubes - September 7

173/11. How to do copper plating on aluminum roller? - September 5

526/02. Grayish black spots over time in zinc plating - 8/28/24

617/17. Separating copper and nickel for optics - 8/28/24

617/13. Accidentally Put Dechrome in Chrome Plating Tank - 8/21/24

617/10. Fluoborate Copper plating process - 8/21/24

617/09. Plating blisters observed on tin finish after annealing - 8/21/24

617/02. Zinc-Nickel Plating -- Dark Deposit in LCD Area - 8/5/24

  15/03. Platinum Plating: How to Determine Replenishment - 8/3/24

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168/97. Electroless nickel plating onto stainless steel - 12/12/24

584/27. "Water spots" on electroless nickel plated parts - 11/25/24

617/63. Electroless nickel plating: white marks - October 31

345/41. Electroless Nickel with PTFE Plating Problems - September 9

617/24. Silver mirroring puddles on glass, oxidizes at the edges - September 8

617/11. Need Cosmichrome in California RFQ: California - August 21

616/08. Electroless copper plating onto wax - August 1

536/23. Electroless Plating onto LCP Engineering Plastic - August 1

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617/90. Need to TiN coat a circular blade, 90 mm dia x 2 mm thick - 200 pcs RFQ: Murfreesboro, TN - 12/23/24

607/71. High Temperature PVD Coatings - 12/14/24

  78/46. PVD coatings: color control Q&A's, Problems & Solutions - August 26

285/27. Vacuum Metallizing Gets Hazing as soon as Top Coated - August 5

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492/71. Galvanizing flux: Ammonium chloride requirements and analysis - 1/22/25

617/98. Galvanizing: Product Quality Issue with Shipped Containers - 1/22/25

449/78. Galvanizing kettle furnace and burner design - 1/22/25

616/98. Planning a small HDG plant - 1/6/25

568/67. Spotting, Staining, Blackening of Hot Dip Galvanized Finish - 12/31/24

613/16. Hot-Dip Tinning Problems & Solutions: hard tin crystals - 12/6/24

617/43. Galvanizing Vats Overheated ... Need supplies, lab equipment, etc. RFQ: Angola - 10/13/24

617/41. Agitation of Galvanizing Flux Inquirer often helps others, so especially deserves our help - 9/28/24

453/09. White spots left by coolants on galvanized steel - 8/19/24

382/05. Galvanizing problem: Excessive aluminum in zinc - 8/12/24

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617/73. Black spots on chemically blackened brass - November 15

117/76. Standards for Oiling of Black Oxided Parts - October 15

362/14. Formula for cold blackening / cold black oxide - October 6

  11/50. How to Get Clear Coat Look from Gun Bluing? - August 3

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286/21. Geomet 750 Hp galvanizing - August 6

553/66. Ferritic Nitrocarburizing has red color to it? - June 15

526/75. Process Comparison for Tufftriding and Nitriding - March 20

401/39. Rust spots on pickled coil after a few days - September 1

456/18. E-coating over Zinc or Zinc Alloy Plating - 1/10/25

617/82. E-coat throwing power, coverage inside tubes - 12/11/24

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524/55. Actual costing of powder coating in India - October 6

617/04. Powder Coating on Zinc Plating with White Rust - August 20

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226/74. Want anti-pit solvent for Electrophoretic Lacquer - 12/4/24

  54/18. Clear Coating Black Oxided Stainless Steel? - November 18

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617/94. Putting plastisol on zinc plated parts - 12/29/24

617/30. Epoxy ink fisheyeing on TGIC-polyester powder coating - September 10

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372/55. Restoring the yellow dichromate finish on automobile carburetors - 1/19/25

385/77. Need Iridite 17p RFQ: California - September 7

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269/68. Properties of 2024 T351 - August 13

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297/78. Stripping chrome plating Q&A, Problems & Solutions - 12/23/24

617/54. Zinc Phosphate stripping for coating weight - 11/25/24

114/99. Stripping TiN (Titanium Nitride) Coating from Titanium - 10/31/24

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617/97. Need Lab Help with Stainless Product Development - 1/7/25

442/93. On line analysis of chrome concentration? Inquirer often helps others, so especially deserves our help - 12/21/24

547/76. Caustic Etch Analysis -- aluminium anodizing - 12/18/24

328/38. Analyze Chrome Plating Bath; Determine sulphates - 12/9/24

45510. Analysis of potassium carbonate in cyanide plating bath - 12/3/24

329/52. Diphenylcarbohydrazide Trivalent/Hexavalent Chrome Testing - November 23

617/78. Need to create pitting corrosion on stainless steel - November 23

  21/83. Can you reliably measure nitric acid concentration with specific gravity gauge? - October 13

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617/85. Spot test for cyanide in waste water - 1/26/25

617/46. Determining if WWT sludge is hazardous? - October 9

123/75. Remove Copper from Plating Waste - September 23

617/14. Sludge from ETP plant - August 21

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110/17. Safety of Drinking D.I. Water - 12/18/24

617/83. Safety of "Chrome" Vinyl Wrap - 12/15/24

208/58. Toxicity of nickel silver punch bowl - November 1

406/57. Inhaled fumes from Bleach and C.L.R. accidentally mixed - September 20

617/27. Popping Popcorn in Galvanized Buckets -- is it safe? - September 8

329/77. Diatomaceous Earth and Shellfish Allergies? - August 21

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617/93. Learn more about automatic electroplating production lines - 12/28/24

617/79. Ideas for heating an alkaline zinc bath? - 11/25/24

599/93. Exhaust method & calculations for plating tanks - November 18

391/55. Stripping plastisol from plating racks - November 12

617/57. Ideas for heating an alkaline zinc bath - October 21

114/65. Sludge buildup on heating coils in phosphating tank - October 10

123/73. Zinc oxide production by French process? - September 19

617/33. Heating Chrome tanks with Hot Water in Lieu of Steam - September 16

435/15. Air Agitation of HCl Pickle Tank - August 14

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240/21. Nitric acid: Are the volume ratios in passivation specs based on 100% Nitric Acid? - 1/24/25

618/00. Meaning of "Zinc electrolyte plating + leaching"? - 1/16/25

461/40. Boeing Chloride Limits for Nickel Sulfamate Plating Bath? - 12/3/24

342/14. MIL-DTL-5541 Adhesion tape testing with 3M #250 discontinued - November 23

617/69. ASTM B700, Type II, Grade D, Class N vs. Class J? - November 18

617/53. What is Phosphate Treatment 5.1.3.3 from spec 1.9.3? - October 30

617/58. Did Wahl Clippers Have Cadmium Plating in the 1970s? - October 21

616/32. Does MIL-C-5541 forbid a "Do Not Etch" instruction? - September 17

423/62. MIL-C-5541 Chemical Conversion Coat -- Legacy Q&A's - August 26

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617/66. What is Black Luster® Finish for Fasteners - 12/12/24

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617/77. 3d printed Inconel 718 part turns blue in vacuum heat treatment - November 16

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418/91. Recover gold from gold plated stainless steel wire - 1/14/25

  50/48. Extracting Gold from Computer Circuit Boards? - 1/5/25

319/63. Remove tin plating from copper pots, trays, cookware, etc. - 12/15/24

336/16. Gold Recovery for Dummies - September 28

278/14. How to Recover Platinum from Catalytic Converters - August 2

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  02/83. Finishing of Kenrick 19th century cast iron - 1/24/25

565/54. Acid Zinc Plating Brightener Q&A - 1/18/25

268/45. Chip on Gloss Black Gas Stovetop - 1/15/25

611/46. Dumbbells have white corrosion on them - 1/14/25

617/99. Hobbyist Copper Plating on 3D Plastics: Help Fine-Tuning It - 1/8/25

617/96. Electroplating bath plates Nickel or Copper depending on voltage - 12/30/24

617/95. Need food-safe pliers - 12/30/24

  12/15. Lead-free Antiquing Wears Right Off - 12/28/24

209/88. Restore silver damaged by peroxide - 12/28/24

309/65. Can't remove old plastic protection film from stainless steel - 12/27/24

344/65. Pre-coating for sublimation transfers onto ceramic - 12/27/24

611/11. Brass Threshold Turned Silver from Polishing - 12/12/24

236/53. Model railroading: Effect of oxidation of nickel silver on its conductivity - 12/6/24

617/80. Preparing Part for Replating with Chrome - 11/27/24

339/56. How to darken aluminum. Want golden yellow look on aluminum - November 16

202/40. Penny isn't copper color - what do I have? - October 29

185/19. Cleaning & polishing gold plated flatware - October 24

617/56. Anodizing aluminum: dye is splotchy - October 21

289/63. What could be causing the pitting and corroding to chrome fixtures - October 8

  26/62. Preserving heat coloring of copper when clear coating - October 6

443/80. Nickel plating, how much SLS for wetting agent? - October 6

301/86. Lime-Away Damaged Stainless Steel Sink - September 19

331/43. Stiffel Lamps: need screws that hold laurel leaves - September 10

229/03. Ospho prep left tacky film - September 8

617/18. Barbell discolored in storage - September 2

191/05. Found a silver penny - August 29

163/04. Need 29 Emtek Brass Door Knobs Refinished RFQ: Texas - August 28

386/28. Gold plating of lead - August 28

128/41. Arcing, Popping & Hydrogen "Explosions" in Plating - August 27

381/37. How to Paint Bathtub Jets - August 19

372/05. Sterling silver vs. silver plate -- How to tell? - August 11

106/64. Touching up powder coated aluminum outdoor furniture (Tropitone) - August 10

559/51. Home nickel plating with vinegar and salt - August 1

  85/75. Remove Water Stain from Teak - August 1

601/91. Restoring black exterior door hardware - August 3

166/99. Want Geneva Metal Kitchen Cabinets RFQ: New York - August 2

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  00/98. Electroplating (Electrodeposition) of Niobium - 12/26/24

617/86. Adding Fe/Cu to Hard Chrome Plating Bath as DOE? - 12/15/24

617/39. Electroplating V, Zr and Ti - September 28

617/19. Electroplating: Role of a chemist - September 10

288/89. Measuring the pH of air - August 24

617/12. Galvanic Issues with Nickel-Plated Aluminum vs. Stainless? - August 21

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  65/07. Benzotriazole and substitutes for brass corrosion control - November 16

617/50. Forcing a white patina on zinc for watch dials - October 11

240/61. Finish for Bare Steel -- linseed oil? - August 10

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128/73a. Removing Silica Water Stains - 1/24/25

243/59. Barber Chair Restoration Q&A's and Successes - 1/24/25

190/39. Need Legs for Martin Wood Stove - 1/15/25

293/70. "Art Deco" cocktail Ring - 12/28/24

258/52. Fixing scratched glass - 12/18/24

238/97. How to identify old brass, copper, bronze, cast iron lamps? - 12/7/24

324/13. Need sweet spirits of nitre (the traditional folk medicine) - 12/4/24

190/39. Need Door for Kalamazoo Stove RFQ: New Jersey, USA - 12/3/24

143/42. Is it a Stiffel? - 11/28/24

128/73a. Removing Silica Water Stains - November 23

304/79. Copper corrosion and blue water in residential water system - November 18

441/90. Problem related to cyanide addition - November 13

617/65. Is Spirits of Nitre or Paregoric good for your nerves? - October 31

268/01. Solving an electrolysis problem in home plumbing - October 25

  22/59. High Temperature Adhesive for Mica to Silicone Rubber - September 23

238/97. Identify this unique lamp - August 18

617/06. Kitchen Floor Stained by Glue Trap - August 18

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