How To Sharpen Your X-Acto Knife Quickly And Safely X-Acto knives are ready for resharpening as soon as they start to resist the pull, so the fine-grit side of a whetstone is typically all you need.

An X-Acto Knife with size 2 blade. Evan Amos via Wikimedia Commons The X-Acto knife can be found on the desks of architects, artists, designers, photographers, model makers, and ransom note ...