Adjustable Z endstop holder

by stephenrc, published

Adjustable Z endstop holder by stephenrc Feb 17, 2013


To provide an adjustable endstop holder for the Z axis. It's designed to attach under the bottom of the z motor on the z rod to keep it out the z coupling area, where on my printer there isn't room to fit.

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Adjustable Z endstop holder by stephenrc is licensed under the GNU - GPL license.

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The scad file is parametric, so you can change the rod sizes and the height of the switch holder. The stl file is set for 100mm Z and 8mm X and a height of 105mm from the bottom of the clamp bracket. It will work on either side of a printer. The scad file uses functions.scad from https://github.com/josefprusa/PrusaMendel ////////////////////////////////////////////////////////////////////////////////////////////////// Assembly ////////////////////////////////////////////////////////////////////////////////////////////////// -insert the two clamping socket cap screws for the x axis holes, it will be a tight fit -insert nylok nut -make threaded rod with thumb wheel, springs, washers into plastic part -install on x axis rod sticking out on one end -tighten as needed the two holding socket cap screws, don't over tighten -install switch end on z rod -adjust to have the knurled nut to hit switch -don't forget to connect the endstop wiring -adjust z home with the thumb wheel ////////////////////////////////////////////////////////////////////////////////////////////////// Parts needed: (McMaster numbers are what I used) ////////////////////////////////////////////////////////////////////////////////////////////////// 1 3mm threaded rod (I used a 70mm long piece of McMaster #90024A040) 1 3mm knurled nut (for increased surface area to hit switch) (McMaster #96115A420) 1 3mm nylok nuts (McMaster #93625A100) 4 3mm nuts (McMaster #98676A100) 2 3mm socket head cap screws 14mm long (McMaster #91290A119) 2 3mm socket head cap screws 18mm long (McMaster #91290A121) a thumb wheel to fit 3mm threaded rod (I used www.thingiverse.com/thing:13807) a compression spring (I used two McMaster #9657K59, since I already had them) 4 3mm washers (McMaster #91166A210)