To test the setup and installation of my new Revolution rotary unit I mounted a rectangular piece 1.25 x 1.35 x 11 inches. Using the rotary option in my Vectric software I set the project up to simply round the spindle using the Rounding Gadget toolpath with the target diameter 1.25. I used the MASSO Wrap Y2A PP with Z zero at cylinder axis. The work piece homing was easy enough except that the Y axis was at the center of the work piece while Vectric XY Datum was left front corner. To resolve this I used a -1.964 (1.35/2) to recenter the datum position and used a 0.25 EM bit. The carve went well except the final diameter was 1.16 rather than 1.25. Has anyone else seen a Z cut about 0.1 inch deeper than expected?
Correction: The -1.964 was half of the unwrapped Y value NOT 1.35/2
So I checked my practice rounding toolpath pieces. They were supposed to be 3" in diameter.
They actually measure 3.1145 " in diameter.
I did use the tool probe block for the Z height.
Maybe there’s a calibration for the probe that can be adjusted? Or it’s leaving a finishing pass allowance? I’m not sure
So… how are you controlling the dust collection?
With difficulty by the looks of the picture 
Word to the wise, never leave a chuck key in a chuck when you finished.
Bad things can happen.
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This was my first run. Have not addressed dust collection on the rotary yet. It looks as if 1F may have a new option that could work on the Rotary. Now that I know the Revolution actually works I will begin researching.
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Absolutely, I knew someone would mention that when I posted the picture. 
It’s best to set the z zero on the chuck.
I have done some more test runs. The Z is consistently 0.09 too deep. I was thinking of changing the offset but will do a measurement from the center point (using a pointed router bit) to the surface of the touch-off platform.
Not the correct way but an easy work around would be be to use the touch-off plate to set Z zero,
then manually set Z zero off the touch off plate with a .09 feeler gauge, then reset zero
Why would you not use the top of the chuck to center? It’s so easy and fool proof. Why use the touch plate at all?
My chuck has a diameter of precisely 100mm
The most precise way is to also to touch of the chuck to zero X or Y depending on which way your rotary sits in the touch plate.
I use G57 coordinate for my rotary, this exercise only has to be done once in my experience.
Pat
Exactly! I use G 59.
I just found out that the Onefinity revolution rotary has a dedicated block to touch off.
Seems like this touch off surface is neither precise nor necessary at all.
Could you guys explain the process you use for G code co-ordinate? I’m not an expert with how you use those settings.
Thanks
