I wanted to stop the plexiglass from flexing in the mid section of the Original Prusa i3 MK3 Enclosure - Ikea Lack Table (https://www.thingiverse.com/thing:2864118). And found this great design https://www.thingiverse.com/thing:2974739.

However, I also wanted to make sure that it would be easy to slide the plexiglass back into the bottom mid brackets. Whenever the top part of the enclosure slides back into place with the bottom part. This is why I opened up the top part of the bracket to help catch and guide the plexiglass into place. I also added a rib to make it a little stronger and stiffer. Finally, I added a section for a washer to distribute pressure over the surface and to protect the bracket from damage by the screw.

I uploaded brackets for the following thickness of the plexiglass plus 0.2mm tolerance:

• 2_2 for metric: 2.0mm -- imperial: 0.080in or 3/32"
• 3_2 for metric: 3.0mm -- imperial: 0.118in or < 1/8"
• 4_7 for metric: 4.5mm -- imperial: 0.177 in or < 3/16"
• 6_2 for metric: 6.0mm -- imperial: 0.236 in or < 1/4"

Pick and print whatever size you need. If you have any feedback please write it in the comments and of course, upload your "makes".

Enjoy!

UPDATE -- 2018/07/28: Version 2 (added a "_v2" at the end of each filename). Just a small update. Tweaked and added some of fillets. These updates were done so we're able to print the bracket on its side to strengthen it. So it's harder to break by accidentally dropping the enclosure on to top of it. If you already printed the original version, I would not re-print them until they break, if ever. I'm still going strong with my originals, it's been a little over a month. I tested the new design by printing them with and without supports, works either way. The new thumbnails show three version 2 printed brackets. (Left: supports by Slic3r, Middle: no support and Right: supports by MeshMixer).

The Collection -- (2018/07/29)

By the way, this is part of my collection of remixed and original parts created for the Prusa IKEA Enclosure (https://www.thingiverse.com/thing:2864118). Here are the rest so far and hopefully the list keeps growing:

• https://www.thingiverse.com/thing:3022541 (Prusa MK2/MK2s/MK2.5/MK3 Removable LCD Controller)
• https://www.thingiverse.com/thing:3024792 (LED Clip v1 (for Modular Mounting System)