Is this 3D model free to download?

Yes, Prusa MK3 fixed Z mounts is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by jltx, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Prusa MK3 fixed Z mounts 3D printable model by jltx

Prusa MK3 fixed Z mounts

Source: Thingiverse by jltx

The Prusa MK3 fixed Z mounts is a free printable 3D model from Thingiverse by jltx. I will leave these up, but they are superseded by Taurus Z. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,044 saves Source: Thingiverse Updated 2026-10-30 License: CC-BY · commercial OK 5 makes Category: 3D Printer

Tags: Original Prusa i3 MK3, Original Prusa MK3

About this model

I will leave these up, but they are superseded by Taurus Z. The same parts (only better) and more are available there. --- Thanks to Pekcitron for the great design. The stock mounts have an error and are too loose which this addresses (see his desciption, and also his excellent photos). I tweaked a couple things and added MK3 Z tops. On the motor mount, I recessed the screw heads so you can reuse the stock M3x10. I also changed the fixed rod hole to 8mm (came out perfectly tight) since I found the other too tight. For the Z tops I tighten the hole to 8mm to match. On the left I tightened up the screw holes. On the right they are looser to enable axis alignment (see assembly instructions). These are designed to print in PETG. ABS will shrink and be too tight. I changed several settings for …

Frequently asked questions

Is this 3D model free to download?: Yes. Prusa MK3 fixed Z mounts is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by jltx.
Who made this model?: Designed by jltx, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.