My Journey To The Perfect Drag Knife

[cropwell]

I had a foil cutter, https://www.sorotec.de/shop/Mini-Foil-knife-Vario.html, which I destroyed by trying to cut the wrong material, so I remade it yesterday.



I have yet to try it out, but the principle is simple. the 7x3x2 bearing is clamped by the knurled collar and the 6x3x2 bearing floats in the shaft with the spring applying the cutting pressure, adjusted by the grub screw. The neodymium magnet holds the cutter in.

The only problem with the one from Sorotec was that it was all pressed together and not dismantle-able or repairable.

My thoughts were to use a swivel knife and mount it with a cut down handle in an 8mm collet, but there is too much slop in the thing to be of any use, and it would only cut a minimum of 5mm radius corners as the blade offset was too much.

I like the Donatek clone idea, and I am considering how it could be done with a Swann Morton scalpel blade (cos they are sharp buggers ! and cheap).