#0150 "Mystery Hole" Cover for Original Prusa Enclosure

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This opening is a source of hot air leakage that is “hidden in plain sight” - it's big enough to fit your finger through it! Covering it up is part of a bigger project of mine to plug up ALL the sources of air leakage so the enclosure can heat up faster and max out at a higher temperature even without active enclosure heating.  And this objective is part of an even larger project of improving the overall experience of having the enclosure.

At first, I thought the opening was covered by the PSU just outside of it, but as you can see in the pics, it's just open to the outside!  Lucky for us, it's quite easy to cover it up!

NOTE: I've not been able to find out what accessory or function this hole is used for, so for now, I'm calling it a “Mystery Hole”. :-)

Features:

1. Simple one part cover that snaps in place.
2. Installed from the inside so you don't have to disassemble anything to install it.
3. Prints quickly and without supports.

Recommendations:

1. Use PETG/ABS/ASA.  Tested with Polymaker ABS Black.
2. PLA is not suitable for the function of this model - it's not great at resisting higher temperatures and will take a set over time.
3. 0.2mm layer and 0.4mm nozzle works fine.
4. Use textured Prusa print plate to match the texture of the enclosure.

Installation:

1. First, insert the bottom retainers.
2. Push down and towards the PSU to snap it in.
3. That's it, you're done!

For best results with heat retention, I suggest you download and print my other designs as well:

1. Extra Rivet Plugs: https://www.printables.com/model/537013-xrivets-for-prusa-enclosure-extra-rivets-plugs
2. Corner Caps: https://www.printables.com/model/552596-original-prusa-enclosure-corner-caps-from-the-insi
3. Slit Covers: https://www.printables.com/model/537014-prusa-enclosure-slit-cover-plug
4. Hex Vent Hole Cover: https://www.printables.com/model/809977-hex-vent-hole-cover-original-prusa-enclosure-ope
5. LCD Cable Exit Cover: https://www.printables.com/model/809972-lcd-cable-exit-cover-original-prusa-enclosure-ope
6. LCD Cable Exit Cover with Accessory Cable Pass-through: https://www.printables.com/model/786143-lcd-cable-exit-cover-with-accessory-cable-pass-th
7. Front Bottom Cover: https://www.printables.com/model/1096783-0190-front-bottom-cover-original-prusa-enclosure
8. PSU Cable Pass-thru Cover: https://www.printables.com/model/809966-psu-cable-pass-thru-cover-original-prusa-enclosure
9. PSU Pass-through Cover (Blank): https://www.printables.com/model/859757-psu-cable-pass-thru-cover-blank-original-prusa-enc
10. Cable Inlet Cover:  https://www.printables.com/model/809962-cable-inlet-cover-up-to-4-cables-original-prusa-en
11. Front Bottom Corner Cable Pass-through Cover: https://www.printables.com/model/859761-front-bottom-corner-cable-passthrough-cover
12. Rear Bottom Corner Cable Pass-through Cover: https://www.printables.com/model/859759-rear-bottom-corner-cable-passthrough-cover
13. Threaded Bottom Panel Hole Cover: https://www.printables.com/model/873425-miscellaneous-bottom-panel-hole-plug-original-prus
14. I will be releasing an Automatic Enclosure Heater as well…check back soon!

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Remember, you can earn some Prusameters if you post a pic of your make!  Plus, it would make my day to see it. ;-D

Happy Printing!

P.S. Please post some constructive feedback if you'd like to see something improved.