Bleu86 Posted April 6, 2020 Share Posted April 6, 2020 I recently got my hands on a full set of old truck suspension, two full leaf springs (woohoo!) As well as two large coil springs. Both the coil springs have a slick black coating on them that I assume is some type of powder coat or ceramic coating. Does anyone have any tips on how to remove this safely? Quote Link to comment Share on other sites More sharing options...
Irondragon Forge ClayWorks Posted April 6, 2020 Share Posted April 6, 2020 More than likely it's just black paint. I have never removed the coating before forging coil springs and never saw any special coatings. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted April 6, 2020 Share Posted April 6, 2020 Bonfire. Quote Link to comment Share on other sites More sharing options...
arkie Posted April 7, 2020 Share Posted April 7, 2020 At least for GM coils, taken off trucks and SUV's, it appears to be a rubberized type of black paint or covering. When I cut one of the springs, you can peel it off kinda like a rubber coating. My guess is that the elastic coating allows the paint type covering to move and flex with the spring and not flake off. It really stinks like burnt rubber in the forge. Needless to say, when I put a piece in the fire, I go off and wait for it to burn off and DO NOT hang around to check the smell. After heating slowly to red to orange, it of course is destroyed and safe to work with. One thing I found out is that it is almost impossible to grind it off because of the elasticity. Quote Link to comment Share on other sites More sharing options...
Welshj Posted April 8, 2020 Share Posted April 8, 2020 Undercoating? Quote Link to comment Share on other sites More sharing options...
pnut Posted April 8, 2020 Share Posted April 8, 2020 I was wondering this same very thing. I have a coil spring from a Dodge caravan that has that same black coating. It's a little shiny. I thought it was rubberized. I was going to toss it in the burn barrel before cutting it with the angle grinder and throwing it in the forge. Pnut Quote Link to comment Share on other sites More sharing options...
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