This is a snap-on cap for the standard Raspberry Pi header in case you want to run the pi naked but worry about something shorting all those easy-to-drop-stuff-on header pins. Sure you could just cut off an old connector or print something with a buncha holes. But then you gotta line up all the pins and printing a buncha holes can be a pain. This just snaps in place over top of the whole assembly. Has little cutouts on either side for clearance in case you have a baseplate screwed onto the bottom.
This is an actual-dimensions file - meaning it's not scaled to compensate for material shrink or a poorly calibrated printer. You'll need to scale accordingly if those are issues for ya.
Edit: I just realized the original cap won't work with the Zero or the 3B+. Created and posted a new version with a notch cut out so it'll work.
I did 50% but anything will do
Prints clean and quickly. As mentioned in the description this is an actual-dimensions file that is not scaled to compensate for any material shrink or poor printer calibration.