Sienci Longmill Mods
thingiverse
If you want to add endstops to your new LongMill, here are the parts I whipped up. The Y-axis mounts on the inside of the y-axis gantry mount, using the two bolts that hold the delrin nut. I unscrewed one bolt at a time. The X-axis mounts on the top left side of the X gantry. I used a small (3.7mm) threaded insert to tension the endstop to the plate. You could remix and reduce the size of that hole and probably get by without an insert. The laser mount is remixed from Andy and Chris's Onshape catalog, to fit the mounting holes of the laser diode that I built.
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