Archives of the Hotline

Letters/threads 8000 to 8999

The Hotline includes more than 50,000 Shop Problems, Q&A's and RFQs about metal finishing. This page is an archive of a thousand of those discussions. You may prefer to start at our home page, view the most recent threads, or search the site.

metal finishing cover

8000. Bright Dip for Beryllium
8001. Electroless copper(Cu) and electroless nickel (Ni)
8002. Adhesion intensity of Kanigen EN plating on 15-5PH stainless steel
8003. Chromium coatings
8004. Powder Coating for non-metal products
8005. Teflon coating
8006. PTFE disadvantages?
8007. What part does voltage play in electroplating?
8008. Corrosion Protection for Aluminum and Steel
8009. Tin Plating
8010. Can a topcoat substitute for Zinc iron Plating?
8012. Dacrotizing on Brass
8013. Black Chromate Finishing
8016. Book about zinc plating
8018. Cleaning Pennies From 1950's
8021. Non-conductive corrosion coating
8022. Anodizing or Plating?
8024. Concentration of Passivate Bath (Nitric for Stainless)
8026. Seeking Chrome-6-free Zinc Cobalt Plating Service
8027. Poor coverage of copper parts in stannous sulfate tin bath.
8031. Antiquing shiny, polished brass sheet.
8038. Diff between metallizing and phosphating
8040. Diecast skin blistering
8041. Nickel plating over aluminum
8042. Tank material for anodize strip
8043. UV curing opposed to gas oven plus UV compatible paint
8044. Copies of Metal Finishing Magazines
8047. Aluminum corrosion
8051. Nitric acid as polishing agent
8052. Plating application question / recommendation
8053. Gages
8054. Protective shielding for powder coat system paint hooks.
8056. Good books on Plating, Anodizing, and Chem-Films.
8058. Parkerizing information?
8059. Polishing anodized aluminum
8061. FeC12 and FeC13
8062. Electroless Silver Plating on Stainless Steel
8063. Extracting Silver Nitrate
8067. Trivalent Chromate Plating Enquiry
8068. Pre-Treatment?
8069. Passivation of 300 series Stainless Steel standoffs
8070. Nickel silver Etch
8071. Stainless color from anodizing
8074. EN on NiCr
8075. Conductivity - Galvanized / Galvannealed
8078. Specs for hardcoat anodizing
8079. How to etch perspex
8080. Electroplating Boron
8082. White stain/contamination of chemical polished Al extruded and machined parts
8083. Dulled bath enamel
8084. Chemical etching stencil process
8085. Parcolubrite or Chemplate
8086. Chromic acid anodize
8090. Sand Burning
8093. Brass Investment Casting Finishing Process
8094. Tin Plating Finish Problem on Aluminium Castings - Fungus Formation
8096. How do I seal a brass bed after it's restored?
8097. Anti-reflective paint
8100. Etching Aluminium and Steel
8101. Need Bright Dip Mix
8102. Kovar plating problems
8105. NCS0502B = Kitchen white?
8106. Electroplating - I did it, now why can't I do it again?
8107. Rusting Process, environmental concern and suggestions....
8114. What exactly is the Heat Stain on Stainless?
8117. Seeking Blue Chromate Solution
8118. Seeking Acid Copper/ Satin Nickel Processes
8119. Seeking Gold Plating of Busbar
8120. Salt-spray performance of zinc electroplating
8122. Nickel Treatment By Sodium Hydroxide PPT
8123. How does a pH Sensor work?
8124. Stainless steel sheet etching process method
8126. Hardcoat Anodizing of die cast parts
8127. Hardcoat Anodizing
8129. Activation process for silver on nickel plating after 24 hours of plating nickel
8130. What is "diamond like carbond" in PVD technology?
8131. Venting and sealing of products to be hot dip galvanized.
8134. Galvanneal/phosphate
8135. Techniques for Liver of Sulfur Patina on Copper?
8136. Options for Gold Plating Acrylic Plastic Resins?
8137. Sealer for Copper Kitchen Countertop
8138. Copper patination
8139. Electroforming on plastic
8140. Oxidized wheels
8142. Why does silver tarnish?
8147. Finishing medical titanium implants
8149. Removing Anodization
8150. Stainless steel etching
8152. Nickel used on old piano hardware
8157. Aluminum Casting Squeak
8158. Hard anodized layer "chipping"
8160. Electroplating
8161. Solderability problem on nickel plated headers
8162. Hydrogen embrittlement test
8164. Phosphate Sludge Removal
8166. Advantages of nickel plating over chrome plating for tyre moulding centre mechanisms
8169. Nitric solution tank
8170. Color finishing stainless steel
8171. Flash Coating
8172. Anodize Pitting?
8173. Tin plating a stainless steel tube
8174. Plating of magnesium materials
8175. Removal of metal impurities in Cu plating tank
8176. How do I safely remove "white rust" from hot dip galvanized steel
8177. Salt Spray Cabinets Corrosive?
8178. Seeking Flat chroffles
8180. Stress fractures in plated Q-45 wheels
8181. Electro plating machine
8183. Internal anodization of coiled aluminum tubes
8184. Indium tin oxide
8185. Wear abrasion test for anodize
8187. Nickel plating vs electroless nickel plating
8188. Chrome plate plastic
8189. Japanese Nickel Plate Specs (On Steel)
8191. Need an acid resistant coating
8192. 17-7 PH Stainless as a contact material?
8193. Bronze extrusion discoloration
8194. Pre cleaning before plating for removing molykote from the surface
8195. Seeking equipment for Platinum aluminide coating
8196. Photos of zinc plating for QC?
8197. Black Oxide Clear Passivation of 303 Stainless Steel
8201. Can Cu contamination cause stainless steel corrosion during annealing?
8202. Tank Contamination
8203. Salt spray test on zinc plated parts
8204. Scratched and dull surface on stainless steel refrigerator door
8205. Surface protection for aluminum from deionized water
8206. Bath to etch small brass parts
8211. Distortion during Chrome plating of Plastic parts
8213. Nitric Acid/DI Water Solution Tank/Basin
8214. Deionized water metal compatibility
8216. Proper/best solution for gunmetal finish on jewelry items?
8218. Colour of Dacromet coatings?
8219. Want to buy stainless steel paint
8221. Deionized Vs Distilled Water
8222. Zinc-plating vs. mechanical vs. hot dip galvanized coatings for small parts
8223. Electroplating vs. vapor deposition of aluminum onto carbon
8228. Gold Sulfite removal
8229. Please, help me remove a stain from a bath tub.
8230. Cad Plating 101 and beyond
8231. Removing gold spray paint from Pewter
8232. Removing oxidization from aluminum with chemicals.
8233. Voltage, brighteners and buffer requirements
8234. Troubling iridescence with liver, ferric, copper
8237. Problems in experiment on chemical conversion coating of aluminium
8238. Etchant for aluminium
8240. Coating for steel 'V' rails
8241. Black coatings for vacuum use
8242. Producing photo resist pcb's
8243. Alodine 1200 finish
8244. Chrome Plated matte finish
8247. Old School Desk
8249. Remove Rust from Brass
8250. AMS and ASTM Specifications sought
8251. Electroless nickel plating integrity
8253. Graphite corrosion on anodized aluminum
8254. Hydrogen embrittlement vs. electroless nickel plating
8255. Phosphate sludge samples wanted
8256. What is Sermalube
8258. Demonstration how to plate a copper penny with zinc
8260. Hard layer on Titanium
8261. Hazards of Copper Sulphate Solution
8262. Plating for Phosphor Bronze parts
8263. Surface Finishes Equivalences
8265. Electroplating of selenium
8267. Seeking US Companies in China for plating shop start up
8270. Regulations for anodize/Cr exhaust fumes
8271. Heat resistant clear coat for fireplace accessories.
8272. Looking for metal samples
8275. Cleaning Copper based Alloys
8276. Spatter finish
8277. Seeking Chevron Perfect Paint
8278. Teflon coating for Waffle Iron
8279. Finish thickness
8280. Passivation Standards
8281. Concave surface after electrolytic nickel plating on tiny surface
8285. Etching titanium
8288. Need information on Nickel Plating!
8289. Gold coated microscope slides
8292. White chromate treatment of aluminium
8293. 5052 Aluminum Reaction To De-ox
8294. Bright dip dissolved aluminum
8296. Chrome hardness vs Temperature graphs
8297. Alkaline cyanide free zinc process
8298. Powder Coating Job Shop
8300. Mils Specs in Australia
8301. Seeking DAG 213
8302. Reflective Coating on Car headlights
8303. Coating for Steel to Aluminum Interface
8304. Non plating materials
8305. Degreasing with Corn Cobs
8307. Hard Anodizing of specific alloys
8308. Dirty anodes in our copper sulfate bath.
8309. Polyketone-containing coating
8313. Zinc yellow passivation poor adhesion
8314. Hydrogen bakeout temp
8315. Gold stripping
8317. Seeking chrome plating of 4 wheels rims
8320. Powder coating pot metal
8324. Titanium tumbling
8325. Unwanted deposition in brush plating
8326. Finish for 5052-H32 Aluminum
8330. Plain stainless to brushed stainless at home?
8331. BBS Emblems for rims
8334. Silver color on aluminium (impossible)!
8336. Blister Causes
8337. Effect of ripple in DC supply for electroplating
8339. Mechanically Galvanized Fasteners
8345. Mechanical over air agitation
8348. Remove chrome plating
8350. Platinum or white gold?
8351. Help regarding Permakote
8352. Are their non-metallic magnetic shields?
8355. Electropolishing of 316L stainless steel
8356. 2 tone anodising
8357. White patches on clear anodised parts
8358. Aluminium anodizing
8359. QQ-P-416
8360. Spray-on Teflon Coating
8365. Chroming fiberglass
8367. Iodine corrosion - spillage in booth of car
8368. Aluminum anodizing
8369. Pipe (Polypropylene)
8371. Chromic Acid Anodizing
8372. Price calculation
8373. Sulfamic Acid compatibility with galvanized or copper finishes
8374. Jewelry Repairman Used Rhodium Plating
8375. Pretreatment for tungsten-copper alloy
8376. Non cyanide plating bath
8377. Problems with zinc/iron over forged parts
8378. Salt Spray hours for zinc with / w/out chromates
8379. Aluminum Concrete interaction
8380. Ammoniacal etching of copper
8381. Seeking highly reflective powder coating for solar application
8382. Plastisol primer formulation
8386. Platinum plating?
8390. Zinc anodes in a fresh and sea water
8392. Seeking teflon coating m/c required
8395. Corrosion of silver plated contacts
8396. Stripping of Powder painting jigs.
8398. Looking for book
8399. Removing tarnish from pennies
8401. Inquiry about uses of sulfamic acid
8402. Determination of field breakthrough capacity of limestone filters in removing copper from wastewater.
8403. Imaging compound curves
8404. Seeking Iriditing
8406. Dry Film Lubrication
8407. Black anodize turning brown
8408. Treating Copper Fountain
8411. Aluminum coating on copper
8414. Max Iron Content Of Nitric Acid Solution For Passivations.
8416. Copper removal from Acid Etch
8417. Alodine 1200 and Alocrom 1200
8418. Specifying low-embrittlement cadmium
8419. Hard chrome purification
8420. Seeking Electro-less gold plating supplies
8421. Powder coat as a Corrosion Inhibitor for Automotive product ?
8422. Alternative to chromate Conversion coating
8423. How do I remove brass plating at home?
8424. Stripping silver-plating from nickel-silver
8425. Diamond Coating
8426. Cleaning - refinishing brass hinges - locks - corners on a travelling trunk.
8428. Outdoor copper patina
8429. Silver plating
8430. Chrome and paint
8431. Zinc phosphate solubility
8435. Wastes from Electroplating industries
8437. Magnetic shielding laminate required!
8442. De-embrittlement Chrome Microcracking
8448. Faux finish anaglypta tin ceiling
8449. Nikasil plating
8450. Using HVLP Sprayer to paint house - paint pot?
8451. Vinyl Siding
8452. Stay bright - Polished Aluminium
8455. Clear powder coating
8462. Coupons of Finishes
8463. SS Corrosion in 17-4 and 316 SS
8464. Aluminum corrosion in presence of nickel
8465. Removal and masking of anodize surfaces
8467. Brown patches on gold plating
8470. Zinc ammonium chloride solution heating
8471. TechnicalWord: Rust
8473. Cracking in Chrome Plating: chicken wire, mud cracks; fill cracks?
8474. Boiling Water Adhesion Test
8478. Sword Rusting
8482. Help ! Urgent - Electroplating used?
8484. Tungsten carbide dies
8486. Constantan Resistivity
8487. Chrome and gold plated effect
8488. Seeking Contract finishing 316L jewelry items
8489. Seeking help for Zinc-Nickel Adhesion Problem
8490. Auto wheel chrome peeling
8491. Additive for Hard Chrome Plating
8493. Copper cyanide strike
8494. Gold plating
8497. Material cross reference Swedish to US
8499. Fiberglass helmet chroming
8500. What is the difference between electro nickel plating and electroless nickel plating
8501. Stripping one color and Re-Anodizing another on Aluminum.
8502. Rhodium plating
8503. Treatment of oil emulsions by polymerised aluminium sulphate
8505. Etching of stainless steel materials
8506. Removing Scale from Stainless Steel
8507. Black Anodising and Chrome conversion difference for radiation
8508. Seeking gold plating machinery
8509. Looking for method to coat with a silver layer
8510. Electrogalvanising Procedure
8511. Problem in Electroless Ni/Au
8512. Seeking tube galvanizing plant
8514. How do I blacken Niobium?
8516. Quantitative Determination of Surface Iron Oxide
8517. Phosphorus content of post-plate samples
8519. Low melting Alloys
8520. High heat stovepipe spray paint in colors
8522. Galvanic corrosion between aluminum and graphite
8523. White Rust on Galvannealed
8524. Iridite 14.2 Suppliers?
8530. Carbon Plating on Copper
8531. Brass coating?
8532. Alcohol and perfumes resistant clear lacquer.
8533. Plating thermoformed plastic?
8536. Achieving superior surface finish in cylinder bore tubes
8538. Small bubbles on silver plated surface, galvanic corrosion?
8539. Galvanized and Galvanneal sheet steel
8541. Passivate 980005
8542. Copper plating at home
8544. SS welded joint failure due to acid attack
8545. Copper, Nickel, others metal brightener
8546. Titanium Nitride Gold Coating
8550. Information sought about steam heating anodising sealing tanks.
8552. Leaching, titanium pollution
8553. Pictures for a micro structure
8560. Kool-Amp
8561. Why do we do Plating?!
8562. Electroless nickel question
8564. How to measure composition of a bright dip tank
8569. Nickel removal
8571. Problem Of High Pressure Flexible Hoses
8574. Effect of magnetic fields on the electronic laboratory equipments
8575. Water Stain on Teak Wood
8576. Primer on cement statues
8577. Preventing Corrosion on Outdoor Spiral Stairs
8580. Steam Homo vs Black Oxide Treatments
8581. Hard Anodizing of 6061-T6 Aluminum and Black Oxide for steel
8582. Hot Dip Galvanize versus B633 Zinc Plate
8583. Rust spot due to "sweating"!
8586. Chrome Passivate film Detection
8588. Metal baseball bats vs wooden baseball bats
8589. Aluminum Bats Vs. Wooden Bats
8590. Phosphating process audit
8591. What is Sherardizing?
8593. How do I clean discolored stainless steel (new)oven shelves due to hi heat
8594. Ductile nickel undercoat
8596. Corrosion resistant finishes
8599. URGENT - Roughness Problem with Electroless Ni over Brass
8600. Soft water quality standards for plating
8601. Stripping clearcoat finish from an automobile
8602. Interactions between silver plated surfaces with protective lacquers
8603. Prevailing torque flange nuts with GM7111M finish
8604. Blisters in Zinc Die Cast Plating
8605. Differences between pitting and blistering
8606. Electroless nickel plating on aluminium alloy - blistering
8607. Decorative ion plating
8609. Attaching anodes and heaters to PP plating tanks
8611. Rust removal of caps on salt and peppers shakers
8613. Roof patina interacting with cedar wood
8614. How do acids clean pennies?
8616. Manufacture of Na(O)Cl by electrolysis of NaCl
8619. Iridite testing
8620. Hard anodized coatings
8623. Electro Plating/ Electroforming
8627. Corrosion testing
8628. Chromate Conversion Hazard?
8630. Gas Nitriding Process
8632. Polishing Cast Aluminum Wheels
8633. Antique finish for Brass
8634. Gold plating metal
8635. ASTM A105 heat treatment
8638. Adhesion Quality of The Chrome Layer
8642. lacquer removal from brass hardware
8644. Extracting silver from silver nitrate for Oscar statue
8650. Consistency of anodization color
8654. Epoxy Removal
8655. Solution being trapped in racks.
8656. What's SPI/SPE?
8657. Pickling of Carbon Steel Pipe lines
8660. Silver cleaner
8662. Recoating NiTi eyeglass frames?
8664. Removing rust stains from finished cast iron
8665. Iron-carbide diagram
8666. Nickel
8669. Chemical Composition of Titanium-Alloy
8671. Gold potassium cyanide
8673. Federal mint authority
8674. A conductive black finish?
8676. Brass bonding
8677. Cobalt on WC
8680. Electrowinning of silver from sulphuric acid
8681. Brass Oxidation Stain Removal Inquiry
8684. Seeking new or used Anodizing equipment
8687. Blisters on silver plating
8688. Fatigue strength related to chrome plating
8689. Hydrogen embrittlement of cast iron
8690. Help with HE on bent plate 1/2"
8691. Welding Hi Solidur
8692. Zamak - definition.
8694. Restoring yellow plastic
8698. Use of SS-304L for concentrated sulfuric acid, 98% at ambient temperature, max 50° C
8699. Corrosion problems with Phosphor Bronze
8700. Durable finish for wire mesh container
8702. Self regulating electropolish solution
8705. "Blind" hole anodizing
8706. Matte or Dull Anodized Surface
8707. Polish and matte finish on anodised Al
8708. Black Dyeing of Chromic Acid Anodize (2024 Al)
8712. Blistered plating at the nickel interface to extruded base aluminium 6063
8715. Hot-dipped galvanizing visual, aesthetic appearance
8717. How to apply/bond PVDF to metals?
8718. Gold Stripper
8719. "Ferroxyl" test for passivated SS-304
8722. Can Scrubber Pad Cartridges Be Cleaned?
8725. Silver-Plating
8727. Dry film lube Q&A's; Mil-PRF-46010
8730. Scratched Stainless Steel Watch
8731. Bright Acid Copper Solution
8732. ? How to accelerate the process of aging brass ?
8733. Mixing Formulas for.....
8735. Zinc and Aluminium anodes
8737. Science research galvanization of steel
8738. Confusing in ion nitriding
8740. Electroplating Insects
8741. Steel Backed Bronze wear Strip Material
8742. How to get rid of moulding for sealant at bathroom
8743. Special metal
8745. Properties of steel
8747. Shear stress of stainless steel 316?
8748. Weld Smut Removal (Mig Welding)
8749. Copper plating for oxidation/decarb resistance
8751. Welding Galvanneal
8753. Control Of Copper Ion In Descale and Pre-dip baths Prior to Tin/Lead Plating Onto Alloy 42.
8758. Bronze process
8761. Dry film Lubrication
8762. Lacquer coatings for jewelry
8763. Temperature testing strips
8764. Decorative product made with aluminium die cast parts
8765. Is an MSDS required for finished parts?
8772. Copper tungsten infiltration
8775. Hologram finish on iron name plate
8777. Carburetor Body finish improvement
8781. Opaque chrome finish
8782. Plated anode basket
8783. Ni activation
8784. Seeking Chrome Plating on Plastic or Fiberglass-reinforced Resin
8785. Powder-coated fencing for indoor cat enclosure
8786. Powder coating
8789. Test to verify if Clear Chem-Film is on Al substrate?
8791. Hydrogen Control for Enclosed Anodizing
8792. What is 'Kelite'?
8793. Brass cleaner/restorer
8796. Ceramic etching
8797. Forms of Copper Sulphate
8798. Metal-Marble-Granite-Finishing
8799. Scratches on Stainless Steel Refrigerator
8805. Ivd new idea
8809. Kennel floors
8810. Seeking turn-key Passivation system
8813. Tin Whiskers Pest
8814. Dangers associated with Copper sulphate testing
8816. High Temperature Clear Coat
8817. What dissolves copper and not nickel
8818. Passivation with low strength Nitric Acid
8819. Passivation of Stainless
8820. About Sulfamate nickel plating solution
8822. Seeking to buy galvanizing plant
8824. Methods of analyses
8825. Q&A's on Stump grinder teeth selection, sharpening, replacement
8828. Copper plating
8830. Etchant for aluminum plating
8831. Bright nickel plated aluminum
8832. Oxidation of carbon steels at temps between 500-600 °C
8834. Soft stainless steel
8835. Mirror polish for Stainless steel balls
8836. Iron phosphate treatment of chromate treated electroplating
8837. Surface characteristics in Electropolishing stainless steel
8838. Alodine 1200 - v - 1201
8842. Seeking chrome plating svc. for fiberglass bumpers
8843. Ingredients for metal finishes
8849. Electroless nickel deposition on copper
8851. Magnesium AZ31B and ZK60A
8852. Magnesium corrosion protection
8854. Cost change from hexavalent to trivalent process?
8856. Checking stainless steel surface
8859. Kind of lacquer for masking parts for hard chrome
8862. Smooth texture on zinc plated parts without finger prints
8863. Sourcing Incralac brass lacquer
8867. Old problem with new area - Dendrites (SnPb)
8868. Discussion about the MPM
8869. Cooling coil material
8872. Seeking gun for 2-part silvering
8873. Seeking Nickel Sulphamate Solution
8877. Hot Dip Galvanized Steel Market
8878. Powder Coat Contamination
8879. Gearless Contractometer Use
8881. Chrome removal from Aluminum Wheels
8885. Reducing time for salt spray testing
8887. Help ! Gun Blue #5
8888. Painting on ABS-PC computer case
8890. Abrasion properties of polyester fibres
8892. White Layer removal from Gas Nitrided
8893. Nitriding of SS420
8894. Cleaning corroded aluminium sandcastings and zinc diecastings.
8895. Holes in Hard Anodize
8896. Hardcoating for deep vacuum application
8898. NICKEL brighteners needed
8899. Bright vs. matte for reflow
8901. Seed layer on PMMA and polycarbonate for electroless nickel or copper
8903. Seeking Anti Tarnishing for Silver
8904. Salt Spray Hours
8905. Checking ph of DI water accurately
8906. Safety Aspects of Chromate Layer
8907. teflon restored
8909. Copper Weather Vane
8913. Japanese theory of the 5S
8914. Phase diagram
8916. Magnetic Stainless Steel
8917. Corrosion Black iron vs Copper
8918. Need nitriding cost info...
8919. Adhesion solution
8921. Is high-sulphur nickel strike worth it?
8923. Need old Frederick Gumm MSDS
8925. Material for anodising tanks
8928. Vacuum Sealed Aluminum
8929. Lacquer furniture
8930. Conductivity of a liquid electrolyte
8931. Where to buy sodium chlorate for my copper oxidation
8933. Problems with rate of electroplating
8934. What happens if electrodes touch?
8935. Machining of magnesium alloy
8936. DI water resistivity
8937. Metal finishing Inquiry
8939. Aluminum oxide removal
8942. Electroplate on plastic with masking
8944. Stripping of TiN
8946. DI water for medical device applications.
8948. Anodized pewter
8950. Black Chrome or Nickel plating
8951. Info. about superfinishing and methods
8956. Alternatives to rhodium plating.
8957. QPQ Process Q&A's
8958. NH3 and TKN in wastewater
8962. Hard anodizing aluminum cookware
8966. Cleaning gold plated tea service
8967. Gold and Silver plating of Titanium Jewellery
8969. Most dense metals
8970. 5 Step Process Prior to Powder Coat
8973. Best Surface Preparation for Painting Aluminum with Spray Enamel
8974. PTFE coating
8975. Simple Method for Corrosion Test
8976. Sodium hydroxide analysis of alkaline zinc.
8977. Deionized water and aluminum
8978. Spec for mechanical zinc-tin plating?
8980. Indian brass statues: how to polish them?
8981. Coloring Titanium
8982. Welding and annealing temp. of titanium
8984. Anodizing and Sealing Aluminum
8985. Potassium permanganate problems
8992. Drawing of titanium pipes.
8993. Galvanizing alternatives
8995. Titanium post pickling procedure
8996. Hard coating needed
8999. Copper brightener

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