# Extending Belts further before calibration

**URL:** <https://forums.maslowcnc.com/t/extending-belts-further-before-calibration/23864>\
**Category:** Uncategorized\
**Created:** [April 22, 2025, 11:49am UTC](https://forums.maslowcnc.com/t/extending-belts-further-before-calibration/23864 "2025-04-22T11:49:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Chulke](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/chulke/32/27890_2.png) [@Chulke](https://forums.maslowcnc.com/u/Chulke)\
**Post date:** [April 22, 2025, 11:49am UTC](https://forums.maslowcnc.com/t/extending-belts-further-before-calibration/23864/1 "2025-04-22T11:49:38Z")

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Ok…So While I’m waiting on my new PCB board from the store…I want to ask a question concerning extending the belts on my machine.

Before I ran into my firmware upgrade snafu, I was in the process of trying to calibrate the machine and got the belts to extend, but they would only extend so far. Now, I have built the standard wooden frame exactly as the guide shows…I haven’t put the stud/ mount points in for the machine yet because I was unsure of belt length…I managed to get them, the belts, extended, roughly centered the machine on the frame, and the belts on a couple of the corners were a bit short and wouldn’t reach my expected mount point. I know there is more belt in the spool but couldn’t get them to extend further…How do I do that?

I would also note that the instructions/ frame diagram does NOT call out a mount point hole location…I assume this is on purpose because you can have a smaller frame…Mine is full size 4’x8’…

Thanks,  
Chuck

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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:** [April 22, 2025, 2:47pm UTC](https://forums.maslowcnc.com/t/extending-belts-further-before-calibration/23864/2 "2025-04-22T14:47:26Z")

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with the newest firmware, you tell it how far to extend.

with older firmware, tell it you have a larger frame.

David Lang

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**Author:** ![ian\_ab](https://avatars.discourse-cdn.com/v4/letter/i/a587f6/32.png) [@ian\_ab](https://forums.maslowcnc.com/u/ian_ab)\
**Post date:** [April 22, 2025, 11:03pm UTC](https://forums.maslowcnc.com/t/extending-belts-further-before-calibration/23864/3 "2025-04-22T23:03:49Z")

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> [@Chulke](#):
>
> belts on a couple of the corners were a bit short and wouldn’t reach my expected mount point.

Go to Setup, then Config