The finishingcom Hotline Public Forum

What is this finish? open Q. (January 18)

Building a scintillator. How to get a bright/reflective surface? (January 13)

Plating/Coating/Finishing Metal Charms (December 13)

Affordable copper infrared reflector high temperature transparent coating (November 30)

Galvanic compatible material mating to Aluminum and Nickel (November 30)

What base/substrate material for gold plated electrodes? (November 21)

What spring material is resistant to 30% HCl? (November 14)

Establishing a standard for matte black finish (November 11)

Want rainbow iridescent coating open Q. (November 10)

Nitrile Rubber not bonding properly to mild steel pipe open Q. (November 8)

Need zinc-gold plating on stainless steel RFQ (November 3)

Want gold colored finishes without use of gold (October 29)

What happens to stainless spring if attached to part while it's zinc plated? open Q. (October 29)

How to Mirror Finish Alumina Ceramics open Q. (January 15)

Ra vs. Rz: Ra keeps growing, Rz stays the same? (January 2)

Deburring of Aluminum components (November 22)

Polishing Stainless Steel to a Mirror Finish (November 20)

Dip vs. Spray Phosphating (January 11)

Carbon Smut Problems in Plating; Pretreatment for Adhesion (December 21)

Cleaning gold that has been burned open Q. (December 14)

Chemical removal of heat treating scale and oxides open Q. (December 7)

Rinsing after Stainless Steel Passivation (December 4)

Formulation or Citric or Sulfamic acid pickling solution for 12L14? (December 2)

Pretreatment for ZnTi alloy. 95% Zn, 5% Ti open Q. (November 29)

Manganese phosphating or black oxide on S7 tool steel & gun parts (November 12)

Unusual reaction of Bohler K390 steel to phosphoric acid open Q. (November 11)

Pickling and Passivating of Welded Carbon Steel Pipes (November 6)

718 nickel parts discolor when pickled after EDM (November 6)

Masking of keyways when anodizing & electroplating (November 27)

Anodizing of titanium with stainless steel attached (December 31)

Need durable black coating for stainless steel (December 21)

Do I have to passivate after mag particle inspection? (December 10)

Acids for electropolishing stainless steel (December 9)

Sodium Dichromate passivation (ASTM A967) Q&As (November 24)

Baffling Citric Acid passivation bath issue open Q. (November 17)

Aluminum piping underground. How to do corrosion protection? (January 11)

Dissolved Aluminum in Anodizing bath -- How Much to Have, How to Analyze/Titrate, How to Correct/Adjust It (January 10)

High Dielectric Anodizing of Aluminum (January 6)

Galvanic potential of aluminum after conversion coating (January 4)

Aluminum anodizing: Constant current vs. controlling the voltage open Q. (December 28)

Anodizing vs. e-coating of aluminum (December 22)

Anodizing 7075 & 7xxx aluminum. Problems & Solutions, Q&A's open Q. (December 22)

Which coating for magnesium parts to protect against corrosion? open Q. (December 18)

Adding sulfuric acid additions while anodizing (December 11)

Water stain prevention for aluminum open Q. (December 11)

Salt Spray Test after Hard Anodising (December 9)

Zincate doesn't stick to aluminum bus bar from some suppliers (December 9)

Energy savings in high temperature Type II anodizing (December 5)

Shot Blast Aluminum Casting for Dark Color (December 2)

Beadblasted aluminium dark shadows when anodised (December 2)

Sharp edges not anodising and dyeing (November 25)

Brushed, glossy anodizing on 70's & 80's HiFi Front Panels? open Q. (November 22)

Burning problem in Hard Anodizing of Aluminum open Q. (November 21)

Applications for room-temperature hard anodizing open Q. (November 20)

Two new polymer-based seals for anodized Aluminum: Non-Hazardous, No metals open Q. (November 19)

Sulfuric Anodized 2024 Al turning Pink open Q. (November 19)

Non nitric acid baths for bright dipping aluminum open Q. (November 14)

PVDF over 25 micron anodising open Q. (November 10)

Sulfuric Acid Anodizing Type IIB procedure & problems (November 10)

Aluminum cathodes for anodizing tanks (November 6)

Parameters for Pulse Hardcoat Anodizing 2xxx Aluminum (November 1)

Tin-Silver Electroplating over Copper Pillar Bump open Q. (January 20)

Manufacturing Process of Nickel Sulphate and Nickel Chloride (January 20)

Black Nickel Bath Formula for Barrel Plating (January 18)

Emissivity value for Cadmium plated steel and Zinc Plated Steel open Q. (January 16)

White Patches in Trivalent Chrome Plating open Q. (January 15)

Can lack of ZnCl2 additions cause chloride zinc roughness? open Q. (January 12)

Hard Chrome Plating Additives? HEEF Advantages? MSA? (January 12)

How thick is the chromate on zinc-nickel plating? open Q. (January 11)

How to do brass plating on stainless steel (January 11)

How much voltage and amperage for barrel acid zinc plating? open Q. (January 11)

How did zinc plating pass 550-hour salt spray? open Q. (January 8)

Need to touch up Cadmium plate (January 6)

Nickel plating is coming out black open Q. (December 31)

Chrome plated hydraulic cylinder rods have pits open Q. (December 31)

Black spots on zinc plated parts with trivalent chromate open Q. (December 26)

Electroplating with Brass (Electrodeposition of Brass) (December 26)

Water marks in alkaline zinc plating open Q. (December 22)

Thiourea and Polyethylene Glycol for acid copper plating additives (December 23)

Hard Chrome Plating on Aluminum Q&A;s, Problems & Solutions (December 21)

Stain Issues Gold Plating 3 Microns on Sterling Silver open Q. (December 21)

Recommended tin plating thickness on bus bars? open Q. (December 16)

Gold plating of aluminum open Q. (December 15)

Gold plate on brass with pen/brush plater? open Q. (December 14)

Bronze Plating for Watch Components RFQ (December 14)

Iron contamination in zinc-nickel plating tank open Q. (December 13)

Nickel Contamination of Gold Bath without a known source open Q. (December 11)

Will silver dissolve in cyanide without rectifier current? open Q. (December 7)

Gold plated aluminum blisters when baked open Q. (December 7)

Nickel plating on leaded steel bubbles at soldering temperature (December 5)

Plating chrome on a nickel substrate open Q. (December 3)

Peel off in hard chrome plating after chemical additions open Q. (December 2)

Process detail for electroplating diamond coating RFQ (November 30)

Zinc plating defects (Quality of metal finishing) open Q. (November 28)

Non-Uniform Nickel Plating Deposit (November 28)

Brighteners for Gold Plating open Q. (November 28)

Adhesion issue between electroless nickel and cyanide silver plating open Q. (November 28)

Turn iron into gold color (November 27)

Need chromate-based anti-tarnish for silver plating RFQ (November 25)

Zinc Plating with Black Passivation comes off during handling (November 24)

Chromate Rubs Off open Q. (November 24)

Best electrically conductive plating for mild steel rodent traps? (November 24)

Problem Dissolving Aluminum Mandrel after Electroforming on It (November 24)

Zinc plating on Zamak blisters & peels open Q. (November 22)

What causes blistering of nickel plated parts? (November 19)

Nickel plating white patches and dullness (November 19)

How to achieve iridescent finish on zinc plated steel (November 18)

Black chromate on cadmium rubs right off open Q.(November 12)

Q&A: Tin plated parts turn yellowish (November 10)

Reducing chloride concentration in acid copper bath open Q. (November 9)

Shelf Life of Tin Electroplate open Q. (November 2)

Mid Electroless nickel on Brass against an 6000 series Aluminium? open Q. (January 13)

Solder turns black and takes no Electroless Nickel open Q. (December 7)

Difference in meaning between: ENIG vs Immersion Gold vs Chemical Gold (December 7)

Chrome plating peels off of electroless nickel (November 25)

Barrel plating on plastics: EN comes off in copper plating step open Q. (November 24)

Decomposition/Plate-out of Electroless Nickel Plating Bath (November 20)

Palladium activation for electroless nickel process open Q. (November 19)

Problem doing EN on stainless with only non-magnetic plating open Q. (November 19)

White Stains and Unplated areas in EN Plating open Q. (November 16)

How to get white color with PVD? open Q. (July 30)

Roughness in Hot Dip Galvanizing Process (December 14)

Pre-Galvanized Sheet vs. Post-Galvanized Components (November 30)

Re-galvanizing Worn or Partially Galvanized Steel open Q. (November 27)

Why can't we add pure aluminum to galvanizing kettle? (November 27)

Does black oxide add hardness? (January 11)

Best Alternative to Black Oxide Finishing open Q. (January 5)

Black oxided stainless fails salt spray, but supplier says it passed when supplied open Q. (November 2)

How to give steel a dull appearance open Q. (November 1)

Anodizing Tungsten Carbide for Electrical Insulation open Q. (July 23)

CED coating has pinholes open Q. (December 22)

CED Paint conductivity is dropping open Q. (November 12)

Aqua Blasting before Powder Coating open Q. (January 8)

How to Powder Coat Plastics (Nylon, ABS, Polycarbonate, Composites) open Q. (December 30)

Candy color powder looks great on chrome plating but not on imitation chrome powder open Q. (December 17)

Is it necessary to wash paintlok prior to powder coating? open Q. (December 10)

Salt spray life of powder coating mild steel sheet after shot blasting surface treatment (November 27)

Powder coating onto zinc-iron plating open Q. (November 11)

Polymer Coating of Sterling Silver as an Anti-tarnish Treatment open Q. (October 10)

Poor adhesion of paint to aluminum open Q. (August 23)

Zinc plating with blue chromate has fat brown stripe (June 19)

Hydrogen embrittlement relief is softening our carburized parts open Q. (October 7)

Stripping/removing cadmium plating safely open Q. (December 17)

Issues Stripping Cadmium with Ammonium Nitrate (December 2)

Copper vs. stainless "Stress Tabs" for Electroless Nickel open Q. (January 16)

Salt Spray vs. Humidity Test for Passivated Stainless Steel? open Q. (January 16)

How to calibrate a pH meter for 0.65 and 1.3 pH range (January 10)

In-house lab setup for plating & anodizing shop open Q. (December 31)

Zinc plating didn't rust in salt spray test, but got thinner open Q. (November 24)

Anodizing I.D. (internal diameter) of hollow aluminum tubing (November 20)

Analysis of HF in Mixed Acid Baths (November 19)

Analysis of metals and acids in Electropolishing Baths for stainless steel open Q. (November 6)

Waste Water Treatment of Silica top coats open Q. (January 14)

Removing black from anodizing dye rinse open Q. (December 10)

Alternative uses for high TDS waste from RO system? open Q. (December 7)

Need photo of chrome tank with mist suppressant please open Q. (November 9)

Will heated copper pipe emit cyanide gas or other toxins? (December 4)

Chromium plated teas strainer scares me ... a lot (November 30)

Can I safely cook my Turkey in galvanized trash can? (November 30)

Dishwasher repaired with zinc plated washers (November 12)

Corroded Titanium Anode Baskets in Plating Tank (January 14)

Scale Buildup in Drain Lines of black oxide and aluminum etch open Q. (January 10)

Barrel plating : long workpiece / nail/spike/screw open Q. (December 22)

Uses for Graphite Anodes? (December 2)

Push manifold for open surface tanks (plating shop) (November 5)

Where to find Dr. Alec Watson's paper on Nickel Sulphamate plating (January 12)

Anodized Aluminum Coating Weight Testing ASTM B137 open Q. (January 8)

Metal Finishing Guidebook -- How to Get It? (November 23)

Stress relief & de-embrittlement baking when hardness of parts varies? open Q. (November 19)

What is this mystery "electroplating over paint" process? (July 24)

Substitute for chrome plating open Q. (December 26)

Understanding MIL-C-5541 Type 1 Class 1A & 3, and Type 2 Class 1a & 3 (December 15)

Hardening EN8 & EN9 parts open Q. (December 21)

Low temperature impact on 304L permeability open Q. (December 1)

Aluminum temper T6 vs. T66 open Q. (November 6)

Melt old gold to make new jewelry open Q. (September 26)

Zincate formulas for plating on aluminum open Q. (January 20)

Can I rubber line a bottle cooler? (January 20)

Help, my yellow brass clock turned pink (January 18)

Lacquering / clear coating a Brass Bed (January 18)

Home Anodizing (January 18)

Boiling water seal for home anodizing? open Q. (January 18)

High strength fastener Q&A's, Issues & Answers open Q. (January 16)

Dyed Anodizing Color Matching Q&A, Problems & Solutions open Q. (January 15)

Paint/powder coat Aluminum Wheelchair Q&A's (January 14)

Stripping a faucet down to raw brass open Q. (January 13)

How to clean Birds in Flight metal sculpture open Q. (January 13)

Pre-coating for sublimation transfers onto ceramic (January 11)

How to electroplate Aluminum onto Aluminum (January 10)

Yellow Chromate Adhesion Problem (January 6)

Rash from Ring? Fixed by Boiling in Vinegar & Peroxide! (January 5)

Demi-fine gold plating of jewelry open Q. (January 5)

Restoring the dark brown finish to copper sinks (January 4)

Cast Iron Cook Stoves: Where to find parts and how to restore open Q. (January 4)

How to Blue / Blacken Brass open Q. (January 3)

CLR ruined my baking pan (December 31)

Re-anodizing Aluminum which has been previously anodized open Q. (December 30)

Bathroom faucets corrode away from the inside (December 22)

Confused about "acid test" for silver and other precious metals open Q. (December 21)

Electrolytic cleaning plates for silver: Q&A (December 19)

Jewelry plating problems for hobbyists, designers, startups open Q. (December 18)

What finish is on this antique turn signal actuator? (December 16)

Want to do matte silver finish "french dead silvering" on brass clock dial open Q. (December 15)

How to Clean Brass and Prevent Tarnishing open Q. (December 15)

Preserving heat coloring of copper when clear coating (December 15)

Q&A's about 'Memory Wire' in Jewelry (December 15)

Hardness of black chrome finish for handgun? open Q. (December 10)

How to refinish cast iron and cast bronze fireplace surrounds open Q. (December 10)

How to clean/restore old brass or bronze portholes open Q. (December 9)

Annealing mixed metal jewelry (copper & silver) open Q. (December 7)

Can you plate over yellow zinc with clear/silver? (December 7)

Remove rust spots from manganese phosphate (December 5)

Restoring rusty cast iron wood stove, painting it (December 4)

Teak oil dries unevenly -- some spots are too dry (December 1)

Teflon coating of stainless steel open Q. (January 2)

Want High Residual Stress in Electroless Nickel (December 2)

Selective passivation of Iridium edges open Q. (November 28)

Which Beverage cleans pennies best? (December 15)

Electroplating copper from copper sulfate bath for science project (December 7)

Fix frozen zipper stuck from salt spray or corrosion (January 12)

Mill Scale Uses and Applications open Q. (January 5)

Can't disassemble Stiffel lamp socket open Q. (January 2)

Residential Elevators Parts and Maintenance open Q. (December 30)

Zinc oxide production by French process open Q. (December 24)

Problems in White phenyl Manufacturing open Q. (November 21)

Formula for electroless nickel plating solution open Q. (November 19)