file Replating cast iron key stems

1 week 6 days ago #5173 by Dialman


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  • Replating cast iron key stems was created by Dialman
    Does anyone know the procedure for replating cast iron key stems, step by step, including prep, sources of supplies or anything else? Also any known "do's and don'ts". I'm quickly coming up with a list of don'ts. Please don't ignore me, I want to make this work.

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    1 week 5 days ago #5174 by Dick Witcher


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  • Replied by Dick Witcher on topic Replating cast iron key stems
    I haven't ever done these myself but have always let a professional do it. If the key arms are badly pitted you have to grind the pits out & sometimes even have them filled with copper which may require repeated coats. Each coat has to be sanded to see if it filled good. Then it has to be copper coated, polished & nickel coated. Every time I have them done they end up nickel plating the whole thing so you have to sand most off the back from the center shaft hole to the back as it usual binds in all of the guides. They also mess up the cups for the key checks by getting too close & making them to thin so they break when you squeeze the ring back on, or the nickel is so thick that you can't get the ring on. Then you have to sand (grind) off the nickel . It can be very frustrating & time consuming.
    Danny Shelby said to leave the old rings on & remove them afterward to replace. My plated would not do them with the ring on?
    Also when NCR did them they copper plated the whole arm but only nickel plated just the front. There was a guy in upstate NY that did them & had a nice set up where he had a long troth & a steel shaft above it with highs & lows like a crank shaft so as it turned the keys were only dipped for the front half. It worked great. Don't know if he is still in business? My platter dipped the whole arm because his tank was 4 foot deep & there was no way he was going to loose the 3 & 1/2' of solution for my arms. I used to do all of them but gave up. HBAC used to do them & Kenny did them. They may know more but that's the experience that I've had.
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