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Adjustable Z endstop holder

by stephenrc, published

Adjustable Z endstop holder by stephenrc Feb 17, 2013
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Thing Info

3481Views 417Downloads Found in 3D Printer Parts
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Summary

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.

Instructions

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
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Assembly
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-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
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Parts needed: (McMaster numbers are what I used)
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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)

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Thing Info

3481Views 417Downloads Found in 3D Printer Parts
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License

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

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