We have a beautiful porch with hardwood decking. We are in the process of sanding/refinishing it. However, we are having a touch time removing the old waxy varnish.

We are using a belt sander with a 80grit sandpaper and it actually gets so hot that the varnish starts to "gum up" and just spears onto the belt and wood. I go through a belt for just about each 2.5" X 10' board.

My questions is whether or not this can be avoided? Does anyone have any tips or tricks?

Thanks in advance