Scaling on part using UCCNC and UC100

[Anonymous]

Hi I have a this simple model I've been using why calibrating and I can't seem to get the size to come out right on either setup but setup 2 especially. For example the circles that are 73mm diameter come out at 39.5mm diameter and the 104mm diameter comes out at 56mm. I've checked my steps and I'm at the point where if I increase or decrease it changes the shape of the circle to a relative degree of the steps +/-. Ive been changing every setting I can and even have a unit converter I tried that still isn't working. This version of the "part" is 2x the size it originally was to see if it was close enough I could double and to start fresh and see if I fudged it somewhere. What am I missing here? 

[seth.madore]

The circle on your part measures 73mm. Are you saying your getting something half the size of that on your machine?

It sounds to me like the resolution on your machine is half of what it should be. Have you tried changing the steps per rev for both axis?

[Anonymous]

I'm not sure you read my post thoroughly? Yes, I pointed out that my pocket diameter is coming in at roughly half (54%) of the intended pocket for all of the pockets. Yes, I checked my steps. I mentioned in my post that I have it dialed in to the point where if I change my steps per unit (this is what UCCNC calls it instead of revolutions as far as I can tell) my pockets stop becoming circles and become ovals that are wider or taller then the pocket depending on if I add or subtract steps per unit. Feel like I am just repeating myself here.

I have attached a screen shot of UCCNC to show my settings. UCCNC and Fusion are both running MM and being post processed in MM as well. 

[seth.madore]

No, I read your post thoroughly. Is your Fusion model intentionally scaled 2X to get the proper size at the machine?

It is understandable that changing steps per unit of one axis turns circles into ovals. Do you have a mechanism of adjust the steps per unit on a per-axis" basis?

The issue doesn't likely lie on the part of Fusion, but rather, your machine settings in your controller

[Anonymous]

Did a full reinstall on both and calibration went without a hitch so all good now.