I bought a pretty beaten up fiskars machete that needed some peening and reprofiling. I did that. Removed some rust. then I wanted to get the original black finish on it again. I tried permatex rust treatment. It's a little rough looking but mostly black. I was thinking of some light sanding to improve the finish. Why you might ask... I dont know, I Just needed a project. Any suggestions on how to work with permatex rust treatment? Is sanding a bad idea?