Fixing Open door for Original Prusa Enclosure

When handling prints, maintaining or adjusting the 3D printer placed in the Original Prusa Enclosure, the Enclosure door must be open. Quite often the door moves by itself to a position that is undesirable. Using a set of these 3D models and magnets, unwanted movement of the open door can be effectively prevented.

Update history

December 03, 2023 - New version v4 - strengthening and fixing the axis, minor adjustments for better printing quality. The axis must now be pushed into Fixation-180-deg-part-A and Fixation-180-deg-part-B with adequate force. Printing is tested on MK4 for PrusaSlicer 2.7.0 and Firmware 5.1.0 (Input Shaper). Part Fix-180-90-Clutch-v4 I recommend printing with 100% infill. Older versions are moved to "Old Versions" folders.

August 26, 2023 - New version v3 - I also created a variable bracket in version 3. The bracket is improved with a clutch that holds the two parts together when the door moves from 180 to 90 degrees.

August 28, 2023 - New version v3.1 - For greater stability, the length of the clutch axis has been modified

Preparing the holder

Two types of brackets are available for fixing open doors:

• Variable for 90 and 180 degree angle - we need 8 pcs 12x6x2 mm neodymium magnets and 8 pcs 13x7x2 mm neodymium magnets

         By simply pushing the door, you can go from an opening angle of 90 degrees to a full opening of 180 degrees:

• Fixed only for 90 degrees - we need 8 pcs 12x6x2 mm neodymium magnets

Neodymium magnets can be purchased e.g. here:
https://www.unimagnet.cz/kv-12-06-02-n_z401/
https://www.unimagnet.cz/kv-13-07-02-n_z991/

Holders are divided into 2 types and are marked with the letters "A" and "B":
A - for left upper and right lower hinge
B - for left lower and right upper hinge

Insert the neodymium magnets into the printed holders according to this picture. Pay attention to the orientation of the magnetic field (North-South) and insert it into the correct holes.

Installation of brackets on the Original Prusa Enclosure

The fixing of the open door is designed with minimal interference with the existing structure. For the upper hinges, just loosen the upper screws and push out the nuts that will no longer be needed. For the lower hinges, we will do the same, but with the lower screws and nuts.

Printing instructions

You have three options:

1. use the pre-sliced G-code and print it on the MK3S+ or MK4
2. use the 3MF file for the latest PrusaSlicer
3. download the latest PrusaSlicer and use the STL files and the following settings:

• print settings: 0.20mm QUALITY
• filament: PETG (tested on Prusament)
• 15% gyroid infill
• no support needed

STL files for the left upper and lower right hinges:
Solid-fixation-90-deg-part-A-v1.stl
Fixation-180-deg-part-A-v2.stl
Additional-fixation-90-deg-part-A-v2.stl

STL files for the left lower and upper right hinge:
Solid-fixation-90-deg-part-B-v1.stl
Fixation-180-deg-part-B-v2.stl
Additional-fixation-90-deg-part-B-v2.stl

Each set contains model files for one hinge.

Nice print!