X-ACTO #11 Blade Cover
thingiverse
I prefer shorter X-Acto covers that only fit over the blade because they hold up well and save space. These custom covers grip the X-Acto #11 blades securely and take up almost no room at all. I based my design on the original X-Acto version. These go on and come off a bit snug, so be cautious: Put them on slowly and pull from the tip to remove these. If you need to remove one using your thumb, make sure it's pressed against the backside of the blade!
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