Reply by msinc

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Posted on belt sander sanding problem

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567 posts in 1389 days

#1 posted 01-29-2018 01:04 PM

Any hardwood size will work. You just need something that’s a comfortable size for you to hang onto. Too small and it wont really be effective, it will be slow. End grain white oak will work pretty quick, you want to “challenge” the belt with something hard and tough to sand. Too big and you cant wrap your hands around it to hang on. You should be able to feel when the belt breaks in and eases up on being so grabby. Do not be surprised if it seems like it doesn’t take much at all, you don’t want to wear the belt out, just break it in. All this is assuming this is the problem to begin with, but I have never seen anything else cause bounce on a belt sander.
You can also do something similar to help “sharpen” up a belt after it gets really dull. Just use the edge of a piece of steel and run it across the belt as the sander is running. One or two passes is all it takes. Doesn’t make a worn out belt new, but it will break up the grit and get a little more life out of it. The difference here is that you wont be able to feel it changing the belt, but you wont need to scrub on it either, just a pass or two. The heavier the grit the more pressure it will require to break up the dead grit and get a fresh “edge” on it. Not too much pressure when doing this with mesh. Best of luck.

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