I need to trim some aluminum tubing down on the inside of an tube. I tried an air die grinder and a rotary bit but it just wore the bit down and didn't take much material off at all. Is there something I could use on an electric grinder or some other way to bore out the inside of the tubing. I need to take off about an 8th of an inch. Thanks guys sorry this is for a boat project though,
I use carbide bits. They will kick aluminums a$$ really fast!! Be careful though, it will eat it up fast. I also use a bar of soap to clean the bit. The bits fit in a regual die grinder.
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