#205 Prusa Core One+ / One L - Corner Cap (Community Tested)

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** Feb 3 2026: Taken out of EXPERIMENTAL PHASE  >> now, Community Tested and in general release **

** Much appreciation for our COMMUNITY TESTERS AND the FEEDBACK they provided **

@k11su_3650015 said: Works good on Core One L. Very snug fit (I prefer it).
@Crt_4067660 said: One thing I would write in the description is that you have to really push them in with force and also to not play with the moving part(when cleaning supports) because it will snap if you press it all the way in.

UPDATE Jan 9, 2026: Sorry all, I accidentally uploaded the wrong version of files in .STP format yesterday.  Please note that it does not have the correct clearances as stated below.  If you have downloaded them from yesterday, please delete them and upload these correct .stl versions instead.  I've deleted the .STP files to prevent more wrong downloads.

UPDATE Jan 8, 2026: Added more clearance to the snaps, labeled "- plus 01" - was 0.15mm per snap, now 0.25mm per snap.  Let's see if that makes a difference.  Also added a version with cable management features.  Please provide feedback if this version with more snap clearance works better, Thanks in advance!

Given the success of my first Corner Cap for the Original Prusa Enclosure, I thought the community would appreciate a Corner Cap for the Core One and Core One L as well! 

PLEASE NOTE:  I do not have a Core One L yet, so I need the community to help me test-fit this design and help me refine it.  I used Prusa's published step files for the Core One as reference so I trust that most of the features of this design will fit. 

For those who are so kind to help, I will of course provide appropriate attribution to you for your efforts!!

Key Features:

1. Installs from the inside so it doesn't disturb the aesthetics of the printer.

2. Snaps in place to hold firmly (community tested) - no magnets needed!

3. Note that each corner's sheet metal features are orientation-dependent, but I designed it with the intention to fit in any orientation.

4. Quick and easy to print with no supports.

5. Adhesion helpers built-in to help a small feature stay on the bed during printing (very easy to remove).

6. Designed to be pushed in from the outside to remove.

7. Once ALL the open holes and gaps are plugged up, the Core One (L) should heat up much faster - I have more designs planned with this goal in mind.

Key Feedback Needed:

1. How well does it snap in place?  Too difficult?  Too easy?

2. Does it hold firm or is it too loose?

3. How easily can you remove it once it's in place?

4. What else do you need to do to make it work better for you?

5. As far as I know, this design should fit the Core One L enclosure as well.  Please help me confirm!

6. Would you like a version with cable management features like the one designed for the Original Prusa Enclosure mentioned above?

Recommendations:

1. Print in PETG/ABS/ASA. My test print was using ASA.

2. PLA is not recommended for the intended heated environment (up to 60C)

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Happy Printing!

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