Buffer Handle Lock for MMU Slot Buffer

I really liked this MMU Slot Buffer designed by mar_jer ( https://www.thingiverse.com/thing:4311235 ). I printed my handles in PETG and they would pull out of the slot plate.

I designed this tiny lock to be inserted after the handle was installed and it seems to be doing the trick. It's small enough it doesn't get in the way of the filament when printing and the handles don't pull out anymore.

Note: You may need a skirt for these if you have problems with bed adhesion.

Finally, I have another thing to work with this MMS Slot Buffer: a mount for a LACK enclosure. https://www.thingiverse.com/thing:4816940.