Cast iron prep
I have a question regarding prep for cast iron. The piece we have is right out of the mold. After grinding off the mold imperfections we rough buffed with a sisal wheel and black compound, and it looked pretty good at that point. (We did a pretty agressive buff.) Then, we buffed with a lighter wheel and rouge compound - obviously not shining, but very smooth. This was followed by a 1 mil electroless nickel process, a rouge buff, and it looked nice and shiny. The customer however doesn't like the rough look of the cast iron. They want it to be "smooth". Is there any way to economically prep this (I don't want to spend 3 hours with a dremel tool on each unit!!) so it's "smooth"? It seems to me that older cast parts were dipped in solder to smooth out the mold pitting before plating, is this correct? If so, where would you get things solder dipped and what is the usual cost? Thanx!
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