spikeyxxx I love that box cutter in that first video link you gave. I cannot believe it can bevel edges & corners. I am now looking at the extended tutorial of a box cutter by Masterxeon. https://www.youtube.com/watch?v=KXVCnd4-NCg
Manuel for Boxcutter 713 https://boxcutter-manual.readthedocs.io/en/latest/getstarted/