Shave a Hair Off a Cut
Registering a workpiece against a stopped miter saw blade so the cut removes a few thousandths instead of a full kerf — the way to close a joint that's barely long.
Transfer a Miter Point to the Other Face With a Razor Blade
When the long point of a miter is marked on one face and the saw runs on the other, line a square up with the mark and stick a razor blade into it. The blade becomes a physical registration point you can index the square or track against from the far side.
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The Problem
Mitering a box beam, the long point of the cut is laid out on one face — but the track saw cuts from the outside, where that mark doesn't exist. Wrapping a pencil line around the beam adds a chance to drift at every edge.
The Technique
- With the long point marked, line your square up on the layout line.
- Stick a razor blade into the wood at the point, registered against the square, and let go of it.
- The blade now stands proud at the exact point — a physical index you can feel and butt against from the other face. Bring the square or the saw track over and register it on the blade.
The blade does what a pencil mark can't: it exists in space, not on a face, so the reference survives the trip around the corner. The reel shows the whole sequence in a few seconds.
Pro tip: Pull the blade before the cut. It's a layout pin, not something you want meeting a saw plate at speed.
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