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• Black stainless steel fasteners for exterior automotive use - May 22

• Sulfamic Acid compatibility with galvanized or copper finishes - May 21

• Need aluminum to be copper colored RFQ:Phoenix, AZ - March 28

• Chromate on bare steel open Q. - March 22

• Internal hydraulic tank rust prevention - March 22

• Stainless steel grades suitable for very dilute salt water? - March 21

• What would make Brass magnetic? - March 20

• Electroplating onto phosphated steel parts - March 9

• Proper fastener material for Ti plate to Aluminum Extrusion? - February 19

• Coloring Nickel Plating, like red or blue open Q. - January 26

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• Vibratory polishing of stainless steel components - May 15

• De-rusting/De-scaling of Heat Treated Parts open Q. - February 28

• Difference between Ra and Rc - surface roughness - January 26

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• Formula for phosphating chemicals open Q. - May 7

• Phosphating chemical problem open Q. - April 28

• Chrome-sulfuric bright dipping of Brass dulls as it cools 2nd Rqst - April 28

• Turbulent flow in strip-line electrolytic cleaner? open Q. - March 9

• Need Macro-Etch Chemical Process Consultant RFQ: Ohio - March 2

• Electropolishing the inside of a long tube - February 27

• Zinc Phosphate coating problems & issues; Q&A's open Q. - February 11

• Boiling Diamonds in Acid to Clean Them open Q. - February 7

• Manganese Phosphate coating color uneven, and not taking in spots - February 7

• Want good salt spray hours from phosphating without oil - February 6

• Pickling & passivating of welded carbon steel pipe open Q. - January 19

• Need details of 'the 7-tank process - January 16

• Coating Weight Specs. How to increase/decrease zinc phosphate coating weight - January 4

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• How to selectively patina copper (darken it) - April 18

• Best Masking Materials & Methods for Aluminum Anodizing - February 11

• Masking material / method for electroless nickel plating - February 8

• Need TURCO 5580-G masking product - February 6

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• Haziness or Cloudiness on Type III Anodized Titanium - June 2

• Rectifier (power supply) choice for anodizing titanium? open Q. - May 25

• Anodizing Titanium: electrolyte formula - May 21

• 303 Stainless Steel Passivation Discoloration - May 3

• Giving Stainless Steel an Aged Brass Look open Q. - April 19

• Etching titanium to produce crystalline finish? - April 15

• Reduce discolorations on cold-headed 18-8 stainless screws - April 14

• Current density & Voltage for Type 2 anodizing of titanium - April 11

• Blackening process for stainless steel chainmail open Q. - April 7

• Phosphoric acid & sulfuric acid electropolishing of stainless steel open Q. - April 4

• Racking material to be used for Titanium anodizing? open Q. - March 27

• Passivation Stains on 17-4 PH Stainless Steel - March 9

• Electropolishing with citric acid - February 19

• Electrolytic etching of titanium - February 11

• Electropolishing/deburring of hypodermic needles - January 10

• Stainless steel laser etch and passivation Q&A - January 10

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• Crazing/cracking of anodizing from baking powder coating - June 2

• Looking for lab for corrosion testing of MIL-DTL-5541 samples RFQ: Jacksonville, Fl - May 22

• Electrical Resistance/Conductivity Testing of MIL DTL-5541 Chromate open Q. - May 23

• Need 'perfect' yellow chromate conversion coating - May 23

• Aluminium Wire Rod Surface Problem open Q. - May 16

• Not very successful yet at anodizing - May 12

• Corrosion of anodized 7075 T73 vs 7075 T6 aluminum open Q. - May 5

• Alkaline Etching Bath gets used up really fast - May 3

• Touching up anodizing with Alodine/Iridite/Chem-film/Chromate open Q. - April 27

• Sandblasting of aluminum diecastings - April 27

• Alodine is too dark! - April 26

• Customer wants bright black anodizing on ADC12 - April 14

• Problems achieving shiny/glossy anodizing - March 23

• Anodized Aluminium edges not taking dye very well - March 20

• "Neutralizing" sulphuric anodizing solution with nitric acid - March 5

• Bulk anodizing for aerospace open Q. - March 2

• Need black anodizing that is UV-proof - March 1

• Bright dip stains the aluminum with grain pattern - March 1

• Roller for adhesion test for chromate conversion coating - February 26

• Problems in cold sealing of anodized aluminum - February 25

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• Copper plating steel grounding (earthing) rods - June 4

• Iron Plating problems (Electrodeposition of Iron onto other materials) open Q. - May 27

• Plating zinc onto stainless steel? - May 26

• Formulation for blue nickel plating open Q. - May 25

• Higher boric acid reduces dog-bone in nickel plating open Q. - May 24

• Applying a color onto a Zinc Die Casting open Q. - May 24

• Understanding Duplex & Triplex Nickel Plating Process - May 22

• Sulfite gold plating -- Problems & Solutions, Q&A open Q. - May 20

• Zinc Plating with Blue Chromate is turning yellow - May 20

• Hard Chrome Plating Failures on Boat Lift Hydraulic Cylinders - May 17

• Discoloration and blackish marks on cyanide copper open Q. - May 17

• Black spots in cyanide copper plating open Q. - May 15

• Cracks on hard chrome plated spools open Q. - May 15

• Repair gravure cylinder with brush plated copper open Q. - May 15

• Plating zinc diecast (Zamak-3): Process sequence? - May 5

• Parting/passivation Agents to Keep Electroforms from Sticking to Cathode/mandrels - May 3

• Chrome Plating Problems on Gravure Printing Cylinders/Rolls open Q. - April 28

• White Rust on Zinc Plated Bolts after 19 hrs neutral salt spray - April 26

• Tarnishing of tin plating - April 23

• Hydrogen embrittlement in cadmium plating - April 20

• Plating conductive microfibers embedded in ABS - April 14

• Anode to Cathode Ratio. Nickel Buildup In Bright Nickel Solutions - April 12

• Want very dull nickel plating on brass jewellery - open Q. - April 11

• Alkaline Zinc Plating Problem: Delayed Blistering on Steel Parts open Q. - April 11

• Current required in hard chrome plating? open Q. - April 7

• Black Zinc-Nickel Plating has poor corrosion resistance open Q. - April 7

• Chloride Nickel Plating is black and burned. open Q. - April 6

• Zinc Plating on 12L14 carbon Steel (Blistering & Flaking Problems) - April 4

• Small parts coupling together in MSA Sn (Tin Plating) bath - April 2

• Nickel plating on aluminum contains phosphorous - March 31

• Rough Titanium Cadmium plate open Q. - March 27

• My acid copper plating bath is very slow - March 27

• Nickel plated sockets are cloudy/milky without a copper preplate open Q. - March 22

• Partial Plating of Chrome on copper base cylinder open Q. - March 20

• Some problems in Zinc-Nickel Plating - March 20

• Zinc plating with chromate: is temperature causing the corrosion? - March 18

• Platinum plating on silver Q&A Problems & Solutions - March 18

• Brighteners used in Silver Plating bath open Q. - March 10

• Blisters in Nickel Plating after Heat Treatment open Q. - March 10

• Need Ductility in Nickel Electroplate - March 6

• Nickel Carbonate not Dissolving open Q. - March 2

• Wood's Nickel Strike Bath Analysis & Maintenance - March 2

• Brass plating peels off -- Q&A, Problems & Solutions - March 2

• Non uniform thickness problem in electroplating - March 1

• Gold isn't bright when plating leaded stained glass - March 1

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• Mirror finish spray chrome paint: topcoat yellowing open Q. - May 12

• Electroless nickel plating on copper Q&A - April 14

• How does "Rub-on Tin plating" work? - March 29

• Plating Electroless nickel onto stainless steel powders - February 28

• Hydrogen Embrittlement vs. Electroless Nickel Plating - February 11

• Spray chroming with silver nitrate - January 3

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• PVD coatings: color control open Q. - March 25

• PVD gold color control and matching open Q. - February 14

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• GSM to Microns. Converting galvanizing weight to thickness - June 2

• Shop problems in Galfan process (galvanizing with 5% aluminum) open Q. - May 26

• Galvanizing high silicon steel open Q. - May 15

• Can pad wiping be used when galvanising fine wire? open Q. - May 9

• Reduce Iron (Fe) in Galvanizing flux - May 4

• Galvanising - Reduce & Recover Zinc Ash and Zinc Dross - April 14

• What galvanizing weight for purlins in Hawaii - April 6

• Yellow scale on hot dip galvanized surface open Q. - March 30

• Reduce & Remove Zinc Dross in Wire Galvanizing - March 27

• Want to do Hot Dip Galvanizing Off and On - February 24

• Zinc adherence defect on edges of galvanized steel sheet open Q. - February 19

• Galvanizing defects: black spots, lumps, streaks open Q. - February 17

• Hot dip galvanizing flux Q & A's - February 17

• Hand re-tinning of copper cooking utensils? open Q. - January 31

• Safety in a Zinc hot-dip galvanizing process open Q. - January 26

• Can stainless steel be hot dip galvanized? open Q. - January 9

• Galvanizing flux bath has iron contamination - January 8

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• Possible to black oxide Inconel? - May 14

• Blackening formulas for steel and cast iron - April 29

• Black Oxide poor coverage on welded part open Q. - April 7

• How often must cold black oxide bath be replaced? open Q. - April 6

• Does black oxide on stainless fasteners improve resistance to galling? open Q. - February 9

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• Sursulf Processing Q&A, Problems & Solutions open Q. - April 4

• Why does zinc & cathodic e-coat lose adhesion after humidity test? open Q. - March 8

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• What Neon Powder Coating for Outdoor Aluminum Sculpture open Q. - April 24

• Industry specs for powder coating thickness and testing methods? - March 30

• Chromated & Powder coated ADC12 Aluminum doesn't pass 366-hour salt spray test open Q. - January 31

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• Need longer-lasting lacquer for gold plating - April 19

• E-Coating Zinc Alloys -- Q&A; Problems & Solutions open Q. - March 6

• DFT problems in CED open Q. - February 18

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• Does Ford WSS-M3P36-A2 (Green) make sense? open Q. - April 19

• Painting plastic imitation wicker furniture? open Q. - March 8

• Need Formula for NC Thinner & Auto Thinner open Q. - February 25

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• Black chromate on cadmium rubs right off - May 3

• Bright Dipping of Brass: some shop problems - April 25

• Visual appearance of Tarniban liquid (silver anti-tarnish) open Q. - March 28

• Chromate conversion on cadmium not adhering open Q. - March 24

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• Post Cadmium Plating Tarnish from Baking open Q. - March 2

• Reflow of Tin-Lead Solder open Q. - March 2

• Matte tin turns into bright with reflow open Q. - January 12

• Are tiny solid blobs of tin detrimental to PCB? open Q. - January 4

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• I need nickel stripping salt composition - May 27

• Removing/Stripping Electroless Nickel Plating from Steel - May 23

• Safe & effective chemical removal of powder coating open Q. - April 29

• Removing chrome plating from plastic (ABS) parts open Q. - March 6

• Nickel plating on brass parts looks layered. - March 3

• What chemical is safe, cheap & best to remove zinc coating? - February 12

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• G155 Weathering Cycle for MIL-PRF-8625F open Q. - April 28

• Clarification on MIL-DTL-5541F Coating Weight open Q. - April 28

• Hull Cell Test on Cadmium solution - April 20

• How to treat Acid Zinc bath contaminated by dissolved Titanium baskets? - April 16

• Free chromium analysis in pretreatment tank open Q. - April 14

• Titration methods for electrocoloring and seal tanks? open Q. - April 13

• Analyzing for iron in HCl pickling acid - April 12

• Carrier Analysis in Acid Zinc Plating Solutions open Q. - April 6

• Brightness measurement vs. surface finish - March 31

• Hull Cell Test for Cadmium Plating open Q. - March 13

• How to know 304 vs. 316 Stainless; tests & suggestions - March 1

• Can I use NaOH solution instead of NaCl in Salt Spray test? - February 21

• Silver plating: atomic absorption analysis of silver open Q. - February 19

• ASTM B117 Salt Fog Test Chamber Operational Q&As, Problems: Salt Spray Woes - February 10

• Determine % Nitric Acid. Titration? open Q. - February 6

• Taber ASTM D 4060: conditioning aluminum coupons open Q. - February 4

• Fluoride analysis in HF/Nitric (etch for titanium) - January 30

• Maintaining and Monitoring Acid Copper brighteners open Q. - January 17

• Analyze for iron content in hydrochloric acid - January 4

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• Removing Chrome Contamination from Glycol Cooling Loop - May 27

• Using waste pickle liquor (ferrous chloride & hydrochloric acid) to break an oil-in-water emulsion - May 22

• Ion Exchange / DM plant calculations open Q. - April 29

• Algae/Fungus/Biological Growth in Plating & Anodizing Rinse Tanks open Q. - April 22

• Filter to take zinc out of drain water so galvanized parts can be washed open Q. - April 11

• Cost of demineralizing water ("price per ton of water") open Q. - April 3

• High COD mixed bed polisher regeneration effluent open Q. - March 31

• Portable DI water columns fade at customer, but are fine when re-tested - March 28

• Cyanide Disposal/Destruction for school lab - March 11

• How to electrowin/recover copper (plating waste) open Q. - March 2

• Caustic & aluminum recovery from cleaning processes - February 21

• Recovery of copper from electroplating & etching solutions open Q. - January 19

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• Shellfish Allergy vs. Diatomaceous Earth? open Q. - April 15

• Microwave Oven Problems & Solutions: Interior Reflective Materials open Q. - March 28

• Remove Teflon coating from Visions & Pyrex Cookware - March 14

• Is corrosion in copper water vessel hazardous? - March 10

• Inhaled fumes from Bleach and C.L.R. accidentally mixed - February 26

• Is worn silverware a Health Hazard open Q. - February 2

• Does my silver plated flatware contain lead? open Q. - January 16

• Sick from welding galvanized steel - January 16

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• Build hard chrome plating plant for rifled barrels RFQ: Bangalore - May 23

• Shot Blasting - Dust Collector Problems open Q. - April 28

• Electroless nickel plating tanks: Protection of stainless steel from plate-out open Q. - April 18

• Exhaust methods & calculations for plating tanks open Q. - April 17

• Passivating electroless nickel tanks; anodic protection systems - March 1

• FRP to protect "tub" from hot temperatures, pressure, rust and leaking? - February 28

• Chemical cleaning of boilers and inhibitors open Q. - February 26

• Concrete tank for zinc phosphate? - February 23

• Designing a Copper Refining Plant open Q. - February 19

• Hydrogen "Explosions" in Plating, Anodizing open Q. - February 8

• Titanium anode baskets get copper buildup in Rochelle Copper Plating - February 3

• Need design assistance on French process zinc oxide furnace RFQ: So. Africa - January 16

• Avoiding Tank Overflows in Plating Shop - January 13

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• Explanation of plating spec HHS: 201 open Q. - May 22

• Standard for required silver plating thickness vs. current open Q. - May 18

• "Good Days and Bad Days", Part IV, Cost and pricing, by Milton Weiner - May 7

• Need book: Electrolytic and Chemical Conversion Coatings by Biestek - April 17

• MFZn8-CF open Q. - March 24

• Alkaline Anodizing Titanium per AMS 2488 open Q. - March 2

• International standards for phosphating processes open Q. - February 4

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• What is the definition of "Metallurgical Bonding"? - May 5

• 14 ga. CRS, Zinc Electroplate 0.030" THN? Huh? open Q. - April 18

• Thickness of CMS-02 or F4383 type T3? open Q. - March 15

• What is the Helodor 100 process open Q. - March 10

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• Problems in Annealing of Copper Wire open Q. - January 26

• Is 6063 aluminum a precipitation hardening alloy? open Q. - January 11

• 316L Stainless is too spring-y - January 3

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• Is this ore/rock Platinum, Palladium & Rhodium? - May 23

• Recovery of fine floating gold open Q. - March 29

• How can I produce rhodium sulfate in lab? open Q. - March 4

• Acid testing for silver & precious metals open Q. - February 19

• Specific gravity table for gold open Q. - January 16

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• Restore dark brass doorknobs - June 4

• Muriatic Acid for Fuel tank cleaning? - May 27

• Dissolve Steel Screw and NOT Gold in a Watch - May 26

• Cleaning Dirilyte Gold-tone Flatware - May 24

• Copper table lost its blackening -- how to re-apply? - May 20

• Need paint for stove top - May 20

• Remove oven cleaner damage from aluminum open Q. - May 18

• Gas tank rust removal methods open Q. - May 15

• Plating thick copper layer; using plating to cold weld items together - May 12

• Pre-coating for sublimation transfers onto ceramic open Q. - May 9

• Concrete Stain for Asphalt Shingles? open Q. - May 7

• How to glue copper pennies together open Q. - May 3

• How to remove chrome plating peeling off of rims! - May 3

• Washing-up tools exposed to plating solutions open Q. - April 28

• Matching shades on polished and unpolished areas of brass bed? - April 29

• How To Decoratively Rust Metal like Jingle Bells & Safety Pins open Q. - April 22

• Preparing acid copper brighteners - April 18

• How to Antique or Blacken Gold rings and jewelry - April 13

• Pyrophosphate and non-cyanide copper strike/plating process problems & solutions - April 12

• Fasteners replated in yellow zinc for my car are randomly shiny or dull - April 12

• Looking for "NicSand" Aluminum Oxide Sanding Gel - April 11

• Galvanic Compatibility of Aluminum and Copper open Q. - April 2

• Restore Silver damaged by bleach ... toothpaste is the answer - March 30

• Need Gillespie Antique Restorer - March 28

• I like the pink on the brass. Will it stay? - March 27

• Brown heat mark on refrigerator - March 25

• How can I coat for sublimation printing on a low budget? - March 25

• Grout cleaner stains on my stainless steel fridge! open Q. - March 24

• Blackening stainless steel without using Potassium dichromate? - March 21

• Copper plating onto Silver - March 21

• What could be causing the pitting and corroding to chrome fixtures - March 15

• Stripping plating from welding clamps leaves them copper color - March 15

• How to turn 18-8 fasteners black? - March 13

• Need help painting brass! open Q. - March 10

• How to get beautiful galaxy-like vintage finish on pot lids? - March 10

• Geneva Metal Kitchen Cabinets: Painting, Removing Dents, Parts open Q. - March 9

• Remove tin plating from copper pots, trays, cookware - March 6

• Best type of clearcoat for wheel application? open Q. - March 6

• Clear coat sealer/varnish safe for birds? - March 5

• How to paint screw heads - March 2

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• Electroless silver plating on ABS - May 22

• Understanding Duplex Nickel Plating Process - May 21

• How are leveling and Throwing Power Related? - May 16

• Are two layers of gold plating better than one - April 14

• How do I make citric-based copper plating smooth - April 4

• Electrodeposition of Molybdenum - March 29

• Why can we copper plate iron/steel in alkaline solution but not acid? - March 14

• Nickel plates okay in one barrel, but not another - March 14

• Trouble with Concentration Calculations - February 20

• Electroless Nickel: need intro and technical info - January 31

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• Copper sulfate kills/destroys algae how? - June 2

• Explain lime with steel nails experiment open Q. - April 29

• Why does tarnished penny weigh less than shiny one - January 28

• Science project: To rust and trust - January 6

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• Removing tar from copper flashing - May 3

• Decorative plating for classic zinc-clad desk? - April 3

• Repaint Cast Iron Statue from "The Little Chapel" in Guernsey - February 28

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• Sedgwick Residential Elevators Parts and Maintenance RFQ: Vermont - June 2

• Fixing Brown Rusty Water (Excess Iron) in Swimming Pool Water - June 1

• Copper Sulphate as Swimming Pool Algae Remedy? - May 22

• How to identify old brass, copper, bronze, cast iron lamps? open Q. - May 20

• FB Rogers Silver Co. -- Is it Sterling or Plated - May 17

• Identifying rings/hallmarks: "AD" hallmark open Q. - May 15

• Exposed HDPE Pipe - UV Protection with Carbon Black? open Q. - May 12

• Stiffel lamp cleaning, refinishing, replating Q&A's open Q. - May 7

• Cast Iron Cook Stoves: restoration hints open Q. - May 7

• Stiffel lamps repair Q&A's - May 7

• Fix frozen zipper stuck from salt spray or corrosion - April 30

• Connecticut Trolley Museum's Art Deco Wood Burning Stove open Q. - April 28

• Maker's mark: Hammer head and face silhouette - April 26

• Mother of pearl button collection molding away. - April 19

• National Cash Registers: How to Restore & Refinish open Q. - April 5

• Theda Sterling Silver Medals, Crosses, Jewelry Q&A - March 4

• About sweet spirits of nitre (the traditional folk medicine) - February 25

• Brass Finishers in the 1800's open Q. - February 23

• Best pipe for natural gas lines: Copper vs. steel, plastic, CSST, etc. - February 19

• Barber Chair Restoration Q&A's and Successes open Q. - February 13

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