Came across this today - a file for making a small priority mail sized shipping box from scrap or from larger boxes. Looks like the file is pretty good. I’ve converted it to an SVG, though I have not yet tested the cut files.
Hopefully, it will work well. As soon as I go pillage some boxes from the recycling bin I will test it and report back.
Since the SVG doesn’t seem to want to attach, I’ve put the file in my Dropbox. Click this link to get the file. You don’t need a Dropbox in order to download the file. In the upper right of the page, click the three dots to get to the download button (in case it doesn’t just appear up there).