Nothing special, but turned out to be really useful. I started to get everything together to put out my garden and noticed that my spool of string was a mess, some had slid off the end and was tangled. My first thought was to cut a couple of rings to slide onto the cardboard spool, but then I’d need to drill holes in the spool for a stop pin. Then I though, who says a spool must be round? Bonus: I don’t need to worry about the spool rolling off the table.
The only thing it’s missing is a slot cut into the rim to keep the end of the string in one place.
The file is optimized for compactness. Where two edges touch, one of them has been removed so that the laser doesn’t cut the same line twice. It has 8 pins in the file, but you can only really get 4 of them inserted, unless you shorten the pins. 4 is enough.
That was my first thought, but then I recalled my spool of parachute cord that had sat about for so long that it was square and took me a while to realize what it was.
