Ridiculously Simple Z-axis Micro-Adjuster

by Georgewchilds, published

Ridiculously Simple Z-axis Micro-Adjuster by Georgewchilds Jan 4, 2013
0 Share
Download This Thing! Customize Order This Printed Tools & Utilities

Thing Info

5311Views 696Downloads Found in 3D Printer Parts
Report Thing


This is an adaptation of Makergear's concept for micro-adjusting the z-axis height for a Prusa Mendel. I needed it to be able to adjust the height after I flipped my x-axis here:


See instructions below for a more detailed explanation.

And please forgive the lousy print in the photos, I had some loose bolts on the print bed when I printed it. Of course, it's such a simple part that it doesn't affect the operation of the bolt.


This part is used to permit the flipped x-axis of a Makergear Prusa Mendel to use the
tallest vertical support of the x-axis (moving on the steel rod) to trip the z endstop.

For pictures and full explanation of the ease with which I flipped the x-axis, go here:


For the micro-adjustment, mount an M3 bolt in the hole and turn as needed to adjust the height.

While I adapted this from a fan mount for a Makergear Prusa Mendel with nicely-rounded supports, this same design concept can be applied to any reprap whose x-carriage is symmetric with respect to the support bars. In Makergear's Prusa Mendel x-axis motor mount, there is a place for a screw to make micro-adjustments to the z-axis height and I didn't want to give up that capability when I flipped the x-axis. I could have just hacked the motor mount with a drill, but it would require a super-long screw, and I don't need that!

Instead, I adapted a ridiculously simple mount for a screw that can be turned up and
down to adjust the z-axis height with a twist of the nice M3 hex key that came with the kit.

I derived this code from this parametric fan mount on Thingiverse:


Then I lined it up with the z-axis endstop (BTW, if you ever need to adjust your endstop holders, I recommend this excellent parametric OPENSCAD z-axis endstop from Triffid Hunter, also on Thingiverse: http://www.thingiverse.com/thing:13482)

For my Makergear Prusa Mendel, I was able to mount this clip onto the upside-down vertical support when I flipped the x-axis.

I made my mount pretty thick, and I closed the opening a little from the original mount
so that the overall friction is increased. The $fn (and the concept) can
be adjusted to make any polygon-shaped clip regardless of the x-axis motor mount

More from 3D Printer Parts

view more

Thing Info

5311Views 696Downloads Found in 3D Printer Parts
Report Thing

Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag. Print Thing Tag

All Apps

This App connects Thingiverse with Makeprintable, a cloud-based mesh repair service that analyzes, validates and repairs most common mesh errors that can occur when preparing a 3D design file for p...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

If you have the same table as I, also try this: http://www.thingiverse.com/thing:39612http://www.thingiverse.com/thi...

Precision Table Adjustment

Thanks Strahlex. I've been using this thumbwheel:
but I've noticed that sometimes I could use something to hold the bolt in place on top. I like your idea of embedding the bolt cap on top. I'll have to rethink the bolt choice as well.

Parametric thumbwheel (M3)
by obijuan

Nice, I really like these thumbwheels.