# Maslow4 frame designs

**URL:** https://forums.maslowcnc.com/t/maslow4-frame-designs/19234
**Category:** Uncategorized
**Created:** [August 16, 2023, 7:12pm UTC](https://forums.maslowcnc.com/t/maslow4-frame-designs/19234 "2023-08-16T19:12:38Z")
**Posts on this page:** 1
**Showing post:** 70

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### Author: ![slomobile](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/slomobile/32/6235_2.png) [@slomobile](https://forums.maslowcnc.com/u/slomobile)
#### Post date: [September 21, 2023, 9:15pm UTC](https://forums.maslowcnc.com/t/maslow4-frame-designs/19234/70 "2023-09-21T21:15:19Z")

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An alternative to knowing the carabiner size precisely would be to select a range of extra length to get in the ballpark, then precalibrate by touching off on a circle of known size. Perhaps a circuit board taped to the spoilboard could be the precise circle. A 555 circuit and 2032 battery on the circuit board produce a signal that goes away when the touch probe leaves the circle.

The touch probe could be a length of straight wire, or standard pogo pin inserted into a router collet.

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