Hi all, spotted this on Kogan, and thought although it's probably cheap and possibly somewhat crappy, it would be handy for sanding large timber panels as it has a surrounding frame to support it.

Somewhat similar to the Festool belt sanders with the frames so you can sand flat and not worry about rounding the faces. I know it won't compare to a Festool, but with a fine enough grit I can't see why it wouldn't do a reasonable job. It's certainly cheap enough:

UNIMAC 1800W Drywall Sander Plaster Automatic Wall Gyprock Vacuum System - Kogan.com