Heat Shrink Tubing Cutter
For cutting 10 / 15 / 20 / 25 mm long pieces.
The blade used is a carpet knife.
Grind the blade at the sharp tips around so as not to injure yourself.
You will find 2 versions for different thickness of the blade.
Once with a slot with 0.5mm and once 0.8mm width.
My 0.4mm thick blade fits perfectly in 0.5mm version.
I have printed with 0.3mm and PLA
You will need a carpet knife blade, M3 bolt and a nut.
The author hasn't provided the model origin yet.