Rubber Insulation Miter Box

This model was created out of a personal necessity. I don't install insulation often but I wanted a tool to help make professional 3 piece 90 degree elbows. I made the slots wide enough for a Milwaukee Insulation knife but it should easily fit a filet knife. The max size for this model is 2" OD which should still fit 1 1/8" ID x ½" Wall Armaflex Insulation. I am waiting for a long print to finish before I can test this out. Thanks for checking out my very first model.