Great stuff man, id like to see the knife when finished2thumbs
You wouldn't happen to know what the thread on those handle mount screws are would you. I almost picked one of these up last weekend, but I couldn't find the right threaded screws for mountingthe tabs. They are a fine thread machine screw right?
That "Dragster" sander uses a brush type motor...you could probably make it variable speed with the right dimmer switch or a router speed control from harbor freight.
I also looked up replacement parts for that sander at a random online parts supply http://www.ereplacementparts.com/black-and-decker-ds321-type-sander-parts-c-4167_4300_4307.html and it looks like a replacement small wheel assembly is 12.00
Cool idea for sure and thanks for sharing it. 2thumbs