Archives of the Hotline

Letters/threads 61000 to 61999

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.

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61000. Electroless Plating the Inside of a Large Container (September 11)
61001. Nylon 6/6 rubbing on anodized aluminum lubricates it open Q. (September 11)
61002. Flattening the ends of mild steel tubes leads to corrosion? (September 11)
61005. Effects of agricultural lime dust on metal roof open Q. (September 13)
61008. Stainless Steel Storage Tank absorption risks (September 18)
61009. Ventilation requirement for Manganese Phosphate line (December 16)
61010. Copper Electroplating Experiment with Salt Bridge camera (September 29)
61011. Type II and Type III on same part open Q. (September 20)
61014. Nickel striked or struck? silly :-) (February 20)
61017. Black spot observed on electroless nickel plated steel (October 3)
61023. Electroless nickel plating process sequence (October 20)
61024. How to properly activate white bronze plating? (October 26)
61025. Alkaline Anodizing of Aluminum open Q. (November 1)
61026. Uncoated carbon steel and 96-hour salt spray test (October 26)
61027. Changing vacuum conditions in PVD open Q. (October 29)
61033. Size loss of up to .001" during passivation of stainless steel open Q. (November 9)
61034. Aluminium Anodizing followed by reverse-anodizing (December 5)
61035. Polishing aluminum deposited on glass to 0.2 nm open Q. (November 16)
61036. Unexpected color change in acid solution for soil digestion (November 21)
61040. How can I improve my DIY black oxide coating process? camera open Q. (November 16)
61041. Finishing porous brass casting before lacquering open Q. (November 18)
61043. Body-In-White spec: cleanliness before degreasing open Q. (November 23)
61045. How to Calculate Current for Electroplating (December 2)
61046. Labs say there is no chrome on our 'chrome plated' parts (February 6)
61047. Protecting selective areas on precision machined weldments of Large Synoptic Survey Telescope open Q. (December 11)
61048. What is "IMMUNIZE" finish? (December 12)
61049. Best leveling agent for anti-corrosion water-based coating? open Q. (December 14)
61050. Prepare the steel before galvanizing (January 7)
61053. Lead poisoning from machining steel & stainless steel? open Q. (January 7)
61054. Stains from post-treating galvanizing with tannic acid camera (January 8)
61055. Sintered Iron Part - Gas Nitriding Unsuccessful (January 16)
61057. PECVD anti-finger print coating on PVD pieces open Q. (January 8)
61062. Need harder nickel free plating for zipper sliders (February 4)
61066. Risks of diluting an evaporated nickel plating solution? (February 6)
61070. Mixing Nickel strike with Copper sulfate bath for disposal open Q. (February 11)
61071. Metalized parts turn 'gold' even before topcoat open Q. (February 11)
61075. How to reduce high zinc content in Socosurf open Q. (February 12)
61076. Strip aluminium from steel dies without caustic solution camera open Q. (February 20)
61077. M.S. recommendation: Material science or Material engineering open Q. (February 25)
61080. Resurfacing existing wood paneled walk-in refrigerator open Q. (February 27)
61081. Vulcanizing Rubber (CR) binding to steel for 1939 Buick part camera open Q. (February 29)
61082. Anodizing Dye Color Naming conventions? 4A, AEN, 3GL open Q. (March 6)
61083. Where to buy 7175-T736 aluminum open Q. (March 6)
61084. Laser cutting removes UV printing from anodized aluminum open Q. (March 11)
61085. Need e-coating of our skateboard tools camera RFQ open Q. (March 15)
61086. Coronavirus copper plate door handles (May 14)
61087. Black Oxide with Supplemental Coating open Q. 2nd Request (April 3)
61088. Nickel electroforming with very thin stainless steel foil as mandrel (May 8)
61089. Stripping zinc nickel passivated with black hex from electroless nickel/aluminium open Q. (April 9)
61091. Energy savings in high temperature Type II anodizing (April 21)
61094. Can we use Cold Rolled Sheet Metal for Hot Dip Galvanizing (batch type) open Q. (April 25)
61096. Rotating field for electroplating open Q. (April 27)
61097. Testing Brazes and locating very clean HVAC coils open Q. (April 29)
61098. Proper Buffer Work Height? (May 19)
61100. What is Nickel Fluoride Bath - Dow, British 830,597 (May 11)
61101. Electrolytic acid works on outside of welded steel tanks, but inside rusts open Q. (May 9)
61103. Temperature limit for cadmium plated aluminum parts? open Q. (May 14)
61104. Baffling Citric Acid passivation bath issue open Q. (May 12) vip
61105. Why is chemical conversion coating wiping off with Acetone? open Q. (May 12)
61106. Need 5RA finish on .180" elbowed hole in 316L open Q. (May 13)
61107. Motor housing with sharp edges fails salt spray test (May 15)
61108. Polishing a Mini Draco for Shiny Gold Plating (May 15)
61109. Visual change to finished Thermoplastic PVDF because of post painted heat open Q. (May 16)

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