# Sled not centering **URL:** \ **Category:** Troubleshooting\ **Created:** [August 3, 2018, 5:41pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429 "2018-08-03T17:41:48Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 5:41pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/1 "2018-08-03T17:41:48Z")
setting up and working in the calibration program when I get to the part where you can center the sled on the work area is does not center, way off. where am i going wrong in the set up? ---
**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:** [August 3, 2018, 5:50pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/2 "2018-08-03T17:50:05Z")
Do a sanity check of this 4 settings in GC and compare to what you measure by hand. Depending on the chain mount system (ring?) check also the rotation radius in the settings to see if it is near what you expect it to be. ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/9/9572b4aab55411a986aabeb4bc7b0a5eff56bfde.png) ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 5:58pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/3 "2018-08-03T17:58:40Z")
I have rechecked the settings 4 times. they are set to what they should be. anything else to check? ---
**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:** [August 3, 2018, 6:03pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/4 "2018-08-03T18:03:04Z")
Is this the first time the Maslow is calibrated? ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 6:05pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/5 "2018-08-03T18:05:48Z")
yes just started. ---
**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:** [August 3, 2018, 6:10pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/6 "2018-08-03T18:10:32Z")
Is your frame with the ‘stock dimensions’ or did you modify, for example a higher and wider top beam? Are you running Firmware and GroundControl 1.18? The only thing I can think of is that the chain length fed out before you attach the sled is off. Can you confirm that it is about 1650mm on each side? Is ‘top-feed’ vs ‘bottom-feed’ clear and set correctly? Can you upload the Groundcontrol.ini? ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 6:10pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/7 "2018-08-03T18:10:48Z")
FYI I did the calibration the first time and it did not center so i tried 3 more times and no joy. ---
**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 3, 2018, 6:14pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/8 "2018-08-03T18:14:59Z")
I assume you are using a ring kit… correct? If so… 2) Did you select triangular and not quadrilateral? 2) What guess did you put in for the distance between the motors and the height of the workpiece 3) What distance between motors did Maslow compute? 4) What rotational radius estimate did you use? Check to make sure the values you entered were appropriate for the unit settings. A couple of times I entered distances in inches but it was set for mm. ---
**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 3, 2018, 6:19pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/9 "2018-08-03T18:19:15Z")
> [@willeyaz](#): > > way off. Also, can you define “way off”? To some, way off is the sled is lying on the floor. To others, way off is an inch or so… ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 6:35pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/10 "2018-08-03T18:35:11Z")
running 1.18 bottom feed distance between motors is 3022.8mm top work area to center motor is 566.7 ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 6:40pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/11 "2018-08-03T18:40:32Z")
triangles motor distance 3022.8 mm Maslow computed rotation radius 140.00 mm 10" both directions. ---
**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 3, 2018, 6:49pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/12 "2018-08-03T18:49:34Z")
> [@willeyaz](#): > > 10" both directions. Meaning when you press “Move to Center” it moves to about 10 inches horizontal and vertically away from the center? ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 7:11pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/13 "2018-08-03T19:11:41Z")
yes 10" to the right and 10" up. ---
**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:** [August 3, 2018, 7:18pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/14 "2018-08-03T19:18:57Z")
> [@willeyaz](#): > > 10" to the right and 10" up That is strange and new. So after centring, 1 chain is shorter then the other? ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 7:22pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/15 "2018-08-03T19:22:14Z")
I don’t know about the chains being different. Just not centering. ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 7:29pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/16 "2018-08-03T19:29:01Z")
![2018-08-03](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/b/b028772c6e648c3ed234b1f99eaee6c854f45978.png) ---
**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:** [August 3, 2018, 7:31pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/17 "2018-08-03T19:31:53Z")
> [@willeyaz](#): > > top work area to center motor is 566.7 does not match with the 352.425 > [@willeyaz](#): > > don’t know about the chains being different can you do a quick measure from the top sprocket to where they go on the ring mount? ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 7:38pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/18 "2018-08-03T19:38:14Z")
that is 1647.8 ---
**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:** [August 3, 2018, 7:38pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/19 "2018-08-03T19:38:50Z")
so both sides the same? ---
**Author:** ![willeyaz](https://avatars.discourse-cdn.com/v4/letter/w/8e7dd6/32.png) [@willeyaz](https://forums.maslowcnc.com/u/willeyaz)\ **Post date:** [August 3, 2018, 7:40pm UTC](https://forums.maslowcnc.com/t/sled-not-centering/5429/20 "2018-08-03T19:40:38Z")
sorry,left is 1647.8 right is 1698.6 [Next page](https://forums.maslowcnc.com/t/sled-not-centering/5429.md?page=2)