Small Plain Grommet
thingiverse
A small 12mm-diameter plain chamfered grommet with a 4mm long/7.5mm wide center post. The eyelet-hole is 4mm in diameter. These are meant to be used with a dab of glue during assembly. Depending on your printer calibration and settings, you may be able to get them to lightly snap-fit instead, but I've been using them with glue - I didn't want to make them too difficult to snap together because I have joint problems. I've been using them for mainly decorative purposes on some fake-leather armor. Because they're so small, I wouldn't trust them with anything heavy-use.
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