# Right motor calibration **URL:** \ **Category:** Troubleshooting\ **Created:** [June 9, 2019, 4:41pm UTC](https://forums.maslowcnc.com/t/right-motor-calibration/10165 "2019-06-09T16:41:20Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![Gero](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/gero/32/17487_2.png) [@Gero](https://forums.maslowcnc.com/u/Gero)\ **Post date:** [June 10, 2019, 2:35am UTC](https://forums.maslowcnc.com/t/right-motor-calibration/10165/8 "2019-06-10T02:35:58Z")
> [@Set your 12 o'clock position with a level... because](https://forums.maslowcnc.com/t/set-your-12-oclock-position-with-a-level-because/8445): > > About setting the 12 o’clock position with Ground Control, Do you see what I mean? [12oClock] I find it difficult to visually set it straight. Now you might wonder “How straight is straight enough?” Well 1/12 of a sprocket tooth distance is 3 degree. That is: [12oClock\_ticks] And this causes about 0,5 mm chain position error on a sprocket. If both sprockets have an error around 3 degree off. They either go opposite (one too high, the other too low) and the X, Y workspace is shifted like t… --- _[View the full topic](https://forums.maslowcnc.com/t/right-motor-calibration/10165)._