This is holder jig for Harbor Freight 1/8-inch Letter and Number punches. I had trouble holding the punch straight while whacking it with the hammer, and this helps you hold it straight up, while allowing it to move enough. Can be held against a guide line for straight lettering. There is a step inside the hole to accommodate the slight flaring on the business end of these punches.

MakerBot

MakerBot Replicator (5th Generation)

Doesn't Matter

Doesn't Matter

0.2

20%

Print with proper infill settings so you get correct hole sizing. If it doesn't fit your punches you can try scaling it. Print upside-down if you have issues with the "step" inside the hole.