Swing arm radius sanding jig

[immortalx]

Hi guys.
I've build various radius sanding jigs in the past, but the one I made recently seems to be the most successful of all. I'm very pleased with how fast it goes putting a radius and how accurate it is.

It's just a welded square tubing box and an axis mounted on pillow bearings. The axis was drilled for 2 all-threads that hold a piece of kitchen top material. That's where the fretboard is attached with double sided tape. The whole thing slides up and down, so as to adjust for the desired radius.