High strength cardboard handle with easy storage

What is it?

A way to add strong, removable, and cheap handles to cardboard boxes that can be comfortable and carry large weights.

How do you print it?

The handle should be printed with hooks on the print bed, facing UP.  This reduces issues with layer adhesion strength.  Any material is fine, as the cardboard will break before your print does.

Print at least 1 breaker, and as many handles as you need.

How do I use it?

1. Place the punch/breaker where you want the handle
2. Push the round-ish tabs to create grooves in the cardboard where you can start cutting
3. Cut into the cardboard with a box cutter as the grooves show
4. Push the hand hole out
5. Install the handle
6. Pull handle up ensuring it hooks into the holes you created.

When you're done, remove it and store all three parts locked together by pushing the thin parts into the handle groove!