Sanding Jig Thins Swollen Biscuits – Woodworking | Blog | Videos | Plans

Wood biscuits can swell in a humid shop to the point that they won’t fit in a biscuit slot. To fix that problem, I created this biscuit-sanding jig from a couple of pieces of oak scrap.

Jig for sanding down biscuits

I cut a biscuit slot in each piece along the stock’s edge, then glued them together to create a holder for the swollen biscuit. I made the slots in the jig slightly shallower than a biscuit is thick. Now, when I run across a swollen biscuit, I drop it into my sanding jig clamped in a vise. A few swipes with a 60-grit sanding block over the biscuit reduces its thickness so it fits the slot again.

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