Simple to use: Circular cutter each equipped with 2 additional replacement blades, rotary cutter adjustable, cutting diameter of approximately 8-32 cm/ 3.1-12.6 inches.

This article was originally published with the title “ Double-Acting Circular Shears for Cutting Paper and Cardboard ” in SA Supplements Vol. 17 No. 425supp (February 1884), p. 6779 doi:10. ...

Seems to me the paper on its own doesn’t stay straight. At 1:28 you can see a standing wave accumulating in the paper. This will on the one hand cause non-orthogonal cuts, which could even ...