Adjust the side guide.

Homemade fence fine adjusting screw

Adjust my lateral guide Homemade quite accurately is not very complicated, since it slides easily and parallel to the cutting disc of my table saw, but it's still snug and tight enough to require a little effort to move. So for a guide adjustment of a distance as small as just a millimeter, just a few taps with the fingertips and with the metal ruler tucked underneath I can control the distance that I move it. And if I can move the guide by tapping the side of the guide to move it over such small, or even minor, distances, an option might be to use a screw that pushes or pulls the guide. I just need a way to turn and anchor the screw.

As a screw I am going to use a 6mm threaded rod. The advantage is that a full turn of the rod causes a very small displacement. And that's the downside too, as using a threaded rod to move the guide more than a few millimeters will involve turning it many turns. This in principle was more than anything a test, but I think that for what I need it it is already good for me. If I had to re-manufacture it, I would cut the hole where the wooden discs go into a V shape to be able to rotate them more easily. Or why not transform the discs into wooden gears and put another gear bigger at 90º on the wooden blocks with a small crank. This would make the screw advance faster and more comfortable to rotate.

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