Advertisements

Mailing Tube End Caps

Faced with a need to send documents rolled up in a tube, rather than folded flat, I sawed off a suitable length of cardboard tube from the heap, then discovered a distinct lack of end caps.

Well, once again, it’s 3D printing to the rescue:

Mailing Tube Cap - top - Slic3r

Mailing Tube Cap – top – Slic3r

The small ribs probably don’t actually do anything, but seemed like a nice touch.

They’re somewhat less boring from the bottom:

Mailing Tube Cap - bottom - Slic3r

Mailing Tube Cap – bottom – Slic3r

The fancy spider supports that big flat top and provides some crush resistance. The flat flange should collect the edge of the packing tape wrapped around the ends.

A firm shove installs them, so the size worked out perfectly:

Mailing tube end cap - installed

Mailing tube end cap – installed

Add a wrap of tape to each end, affix the USPS label, and they went¬†out with the next day’s mail, PETG hair and all.

The OpenSCAD source code as a GitHub Gist:

Advertisements