Printrbot LC Plus Z-Endstop

by CursedMagician, published

Printrbot LC Plus Z-Endstop by CursedMagician Jul 11, 2012
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My Z-Endstop on my PB was never very stable and was causing me some issues printing. So I decided I would try OpenSCAD and see if I could create a replacement.

This is my first upload and only the second part I have created.


Remove the existing wooden foot and clean off any glue and slide this one on, the fit is quite snug and although I've added a hole for a screw to ensure it does not move, its totally unnecessary on my print.

The OpenSCAD is my first play with it and is very basic and there are much better ways to accomplish the same design which I'm learning.

If you need to change the end stop screw position to line up on your specific PB simply change the stopScrew value in the scad file and recompile.

at the moment its set as 13.5, combined with the 2 mm body this makes it 15.5 from the inside face of the Z-endstop leg.

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This thing is... amazing - if you have a printrbot MAKE THIS. Not only is it very sturdy, it also snap fits onto the original plywood piece! Adding the support screw is entirely optional. I recommend:

usie a 2.95mm drill bit to pre-drill the Z screw hole.
Screw in the Z-stop screw.
Snap fit it to the printrbot, make sure it fits all the way (it's tight!).
Drill through the mounting hole and through the plywood (carefully).
Screw in the support screw.

There are many ingenious design features in the Printrbot. The z-endstop is not one of them. One clue is that it's the only piece that requires glue. This Thing is much better than the original. I did have to print it three times to get it to fit right (my machine prints inside holes small) but now it's a perfect press-fit and holds the stop screw rock steady. Nice job.

I'm not even using a screw to keep it in place. It press-fits perfectly. Thanks a bunch!

I found the same thing, the screw is not really needed, but I could not be sure if there would be any small variations on other versions
… I really like the colour of yours, looks great :)

And best of all I wouldn't have had to wait for the epoxy to dry. :) The whole bot can be assembeled without glue except for this "one" part.

i know, they should have done one of the screw tabs/hole things. put the hole in the "shoe" and have the screw going into the bottom edge of the bridge dogleg piece with the head of the screw at the very bottom... it would have made it so much quicker to assemble.