I meant without printing anything, for anyone without access to a 3D printer. This was in response to the above comment about freehanding it.
To use an ordinary box cutter for this purpose all you need is something to use as an endstop and something to use as a fence, and they have to be parallel to each other.
I hear it’s amazing when the famous purple stuffed worm in flap-jaw space with the tuning fork does a raw blink on Hara-Kiri Rock. I need scissors! 61?