Question: can you sand jb weld?
Answer: For the best bond, surfaces should be roughened (or scratched) with fine or coarse sandpaper. When first mixed, J-B Weld is subject to sagging or running (slow dripping), more so at warmer temperatures. ... When fully cured, J-B Weld can be drilled, formed, ground, tapped, machined, sanded, and painted.