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As an experiment I just cut a pipe holder out of MDF. I wanted to see just how true it would spin. I mounted it on the rotary jig and it was not as good as I would have liked. (I have the belt off so...

I do not think there is anything easy you can do to level the jig in the y direction. There is no adjustment built into the jig design. As for the other measurements, you will have to look more...

The mpc looks ok. The machine does not actually touch the dowel to find the surface as it does for boards. The machine knows the touch point is 1.75" above the jig axle. If you were carving a 4.25"...

That sounds strange. If the dowel in Designer was 4.25" and the strip added 1/8" to the touch height, it should have carved the right depth on 4.5". Give everything a double check. Was the dowel in...

I think that is right. 1/8" strips taped to the tops of the plates should be good. The strips do two things: raise the head to give clearance under the y truck and raise the bit touch point. The...

Here is something you might be interested in. When I was beta testing the CW rotary jig, I made some prototype "add ons". One of these was some braces for the top of the jig. I was worried that the...

Good job. Nothing like doing it to prove it can be done!

A few notes about the rotary may help. The depth touch is the touch on the top of the drive plate. The machine knows that the axle is...

There is no need. It is an easy matter to make the jig plates 1/8" higher. Tape on some strips of wood (use some silver tape) and the machine would not know the difference. After putting some thought...

This is going to work! But, could you not get 1/8" thick wall pipe which would have a OD of 4.25?

Sorry, I just want to see this work!

All the parts except the jig and dowel go up when the head goes up. If you lay spacers on top of the jig plates. The head will not come down as far. The head, the rollers, the y carriage will all be...

I still believe it can be done. You are almost there.

How about this: Add 1/8" thick rails along the tops of the rotary jig plates. This will raise the head an extra 1/8". This kills two birds...