The purpose of this key sheath is to avoid a key's teeth from scratching other things. In my case, I use it to protect my motorcycle from further scratches caused by the house key on the same key ring.

I tested the fit on the following keys, but I'm hoping it works on most standard house key blanks.
Kwikset 5
Lowe's 66
TrueValue KW1

The cap snaps closed. If you want to open it, use your fingernail to lift the cap over the extrusion. I rarely use my house key, so I designed the cap to be more secure than easy to open.

Make sure your printer is calibrated for small bridges. If it isn't, you can use supports in your slicer.

Prusa

i3 MK3

No

No

0.1 mm

20%