Printrbot Z-stop thumb adjuster

by RedJoe, published

Printrbot Z-stop thumb adjuster by RedJoe May 31, 2013
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As I'm sure you are all aware of, using a phillips screwdriver to adjust your Z stop is a pain in the rear. I created this adjuster so I never have to use a screwdriver again to adjust the Z stop. It works great, I put an arrow on it so you know where your adjustment is located as well. This is highly recommended upgrade for your Printrbot V2.


Print out the adjuster.

Cut the head off your old 6/32 adjustment long bolt.
Install a 6/32 nut onto the bolt, then thread the bolt into the adjuster at least a 1/4-1/2 inch. Tighten the nut against the adjuster. Screw the knob back into the wooded adjustment shaft and set your Z-stop height.

Now you have a nice long adjustment knob that extends up past your X-axis motor for easy adjustment without any tools.

Use a permanent marker and add some color to the arrow.

I also recommend carefully filing down the threads on the bottom of the bolt where it meets the stop switch, so it's completely even, which means your adjuster will be very accurate in any position.

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This works awesomely! It took a few tries to get my printrbot calibrated well enough to print the right size but now it works. Also the nut that came with the Z-screw had rubber on the inside so it didn't work with this, but I stole one from the printrbot filament coaster and it works great.

This works very well. But I feel like I should point out that you don't need to cut your screw. All you have to do is put your original screw in upside down. That also leaves you with a nice uniform bottom (the head of the screw) to trigger the z-stop.