# Fully Calibrated but Oblong Circles

**URL:** <https://forums.maslowcnc.com/t/fully-calibrated-but-oblong-circles/2695>\
**Category:** Troubleshooting\
**Created:** [March 13, 2018, 4:37pm UTC](https://forums.maslowcnc.com/t/fully-calibrated-but-oblong-circles/2695 "2018-03-13T16:37:10Z")\
**Posts on this page:** 1\
**Showing post:** 189

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**Author:** ![Brendon](https://avatars.discourse-cdn.com/v4/letter/b/5f9b8f/32.png) [@Brendon](https://forums.maslowcnc.com/u/Brendon)\
**Post date:** [August 1, 2018, 9:33pm UTC](https://forums.maslowcnc.com/t/fully-calibrated-but-oblong-circles/2695/189 "2018-08-01T21:33:20Z")

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I don’t know if this will be any help to anyone, but I just put this on thingiverse based off roselea’s design. I moved the holes, redid the sprocket hole so on my printer with no scaling it fits the sprocket perfectly with 0 play, and added a slot for a tape measure to sit in, slightly offset so that the inner side of the L thingy on the tape will be perfectly centered on the spindle. I was having a hell of a time measuring my motor distance on a 12’ beam that is really high!

Should really help measure motor distance accuretly. I am printing 2 so i can measure to the slot on the other end too, so long as i turn the second print 180 degrees before putting it on the sprocket, it should be 100% accurate. Shame my eyes not that accurate 🙂

> **[Maslow Motor Calibration Tool by brendonr](https://www.thingiverse.com/thing:3030254)**
>
> This is not a true Remix as such, as I totally redesigned this from scratch. But I did try to use the original as a base and took the idea from it so ill post it as such, is a good idea. I moved the hole to the bottom to give the most visual...

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