Very briefly, I discovered a great little tool for the removal of the mountains of foam dust that are generated when building a KR - a cheap knock-off dustbuster. I picked one up at Home Depot - 7 bucks. It will marginally vacuum up sawdust, but it does a great job of sucking up foam dust. Shop vacs do nothing more than redistribute the dust, but a dustbuster will actually capture and hold it. FYI - the one I got is called a "Vista" and it has a paper filter that can be blown out with a little compressed air.
Mike Meyer
