# What must be adjusted to correct out of round circles

**URL:** https://forums.maslowcnc.com/t/what-must-be-adjusted-to-correct-out-of-round-circles/3162
**Category:** Troubleshooting
**Created:** [April 5, 2018, 10:57pm UTC](https://forums.maslowcnc.com/t/what-must-be-adjusted-to-correct-out-of-round-circles/3162 "2018-04-05T22:57:15Z")
**Posts on this page:** 1
**Showing post:** 141

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### Author: ![madgrizzle](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/madgrizzle/32/1372_2.png) [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)
#### Post date: [August 27, 2018, 1:45am UTC](https://forums.maslowcnc.com/t/what-must-be-adjusted-to-correct-out-of-round-circles/3162/141 "2018-08-27T01:45:25Z")

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> [@Dustcloud](#):
>
> Regarding the rotational radius, My hand-built sled measures 119 from the spindle center to the outside of the ring. I do not know how it is calculated from there, but adding the space between the outside of the ring and the end of the chain the pin goes through, I get 14.287. Adding to the 119 = 133.287

This is interesting. See my [post](https://forums.maslowcnc.com/t/ring-kit-rotational-radius/6113) in the forum wiki regarding rotational radius of the ring kit and tell me if my meausrements are off. I did it based upon drawings but would love some actual verification. I say it’s interesting because when I calibrated it wants to drop rotational radius to 133 and in under the impression it’s closer to 140…

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