# UniStrut Frame designs

**URL:** <https://forums.maslowcnc.com/t/unistrut-frame-designs/1267>\
**Category:** Technical Details\
**Created:** [November 29, 2017, 3:57am UTC](https://forums.maslowcnc.com/t/unistrut-frame-designs/1267 "2017-11-29T03:57:06Z")\
**Posts on this page:** 1\
**Showing post:** 27

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**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [December 5, 2017, 11:04pm UTC](https://forums.maslowcnc.com/t/unistrut-frame-designs/1267/27 "2017-12-05T23:04:37Z")

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> [@mrfugu](#):
>
> not that easy, yes it’s movable, but it would still be a 5min operation and without a guide rail on the frame’s “Z-Axis T-Joints” could require a re-calibration. (even though the motor distance might not change much, it still could be askew to the workpiece +/- ~x mm.)

> If we could make the top beam itself move in and out based on material thickness it would alleviate this problem without needing to re calibrate. In fact, your setup is already most of the way there. If you flipped the Unistrut that the beam mounts to, it would give you that level of adjustment.

you are talking about two different things.

mrfugu is talking about the distance from one motor to another

you are talking about the distance from the beam holding the motors to the back  
of the frame.

changing the front-back location of the beam doesn’t require any calibration.

changing the distance between the motors, even a tiny bit, requires calibration.

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