Thicknessing Jig

Before I could start, I needed to thin my mahogany thwart piece by 3mm. I made this handy thicknessing jig for my router to do the job. Clamp the piece in the tray, set the height of the bit, then carefully slide the router back and forth whilst moving it along.

If I ever make one again, I'd make it longer though..the router can only move across about 10" of the piece being thinned.

My router book said to use a dish carving bit, but I haven't got one, so I just used a worktop bit. Its OK, but at 12mm diameter you need to do a lot of ack and forth passes.