Adjusting my ShapeOko 2

When milling the Dominion turntable I noticed that my ShapeOko 2 wasn’t square – or to be more accurate: I noticed that the cutter took about 1 mm more of the surface in one side than it did in the other side.

At first I just thought that the lumber didn’t have the same thickness in both sides but when I milled the second part I noticed that the difference was consistent, so I made the conclusion, that my ShapeOko 2 wasn’t square.

After some considerations I came up with the following idea: I bought a digital dial indicator and constructed a holder so it could be mounted in the bracket for my spindle. It looks like this:

Digital dial indicator

Digital dial indicator

The holder consists of two parts: a square to be attached to the dial indicator and a round piece with diameter 43 mm that fits the bracket for my spindle.

I then mounted the thing in my ShapeOko 2 and started to measure it’s height above the surface. Sure, there was a difference from one side to the other of about 1 mm.

I then adjusted the frame by lifting or lowering each corner by loosening the screws and move the y-rails before tightening the screws again. After some fiddling (read: a lot) I finally ended up with the following measurements for the four corners.

Left front corner

Left front corner

Left background corner

Left background corner

Right front corner

Right front corner

Right background corner

Right background corner

With a difference of only 0.04 mm I’m very pleased with the result. 🙂

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