A tip you may want to use if making your own paperboard boxes is to get an old rotary pizza cutter and really round off the edge, make it round and not sharp. Before you start folding up the box you cut out, lay a straight edge on the back side of where the fold will be and score it with the pizza cutter. The score will give you sharp, straight creases and make the folds very easy. It will probably be even easier if you do the scoring after you mark the cutout lines of the box but before you cut it out.
Jack Kuzepski
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