Piercing rag stock introduces stress points that do not behave like woven cloth. Pulling the strand through the sheet requires calibrated drag; if the friction spikes, the paper perimeter puckers rather than anchoring the line flat. Looking closely at the puncture pitch across the red print confirms that even half a millimeter of deviation alters sheet tension across the plane. I will record the perforation spacing in my notebook before noon.
Denník · 10. 10. 2026