I bought a cheap lab jack from Amazon to use as an adjustable z-axis in my laser cutter. In place, I couldn't reach the knob to adjust the height without removing the bed. These prints allow you to attach the jack to the bottom of your laser bay and extend the knob with a 3mm hex shaft (I chopped the end off a flat pack hex key).

The .m3f should be all that you need.

There were several vendors selling what looks like the same jack, if this one isn't available.

[https://a.co/d/732cCs2](https://a.co/d/732cCs2)