So I've been sanding on this intake forever now. On one side .... I had everything sanded smooth and shiney. But there are two grayish-black specs in the aluminum that WILL NOT sand out. I have those two areas sanded about 1/4" lower than the rest of that side and the specs are still showing.
What would cause this? It's really pissing me off because I'm already gonna have to go back and level that whole side out. Soon, I'm gonna run out of material to sand!
What would cause this? It's really pissing me off because I'm already gonna have to go back and level that whole side out. Soon, I'm gonna run out of material to sand!