Luke Cyca .com

The OLFA L-1 is my favourite utility knife. They're not expensive, but it's still the kind of tool I don't lend out. I have two of them, and one of their shuttles broke.

I went at the broken part with my calipers, and modeled it up in Fusion 360.

I shared it on Fusion 360 so you can copy it.

Or you can simply download the STL files and 3d-print them directly.

Once you've 3d printed them, jam a socket-cap M3 bolt into the knob, and a nut into the shuttle. If you heat them up a little, the plastic melts and gives way a bit, resulting in a nice friction fit. You could probably use a bit of epoxy or superglue for extra permanence too.

All fixed!

Mine lacks the satisfying dedent as you turn the knob, but otherwise works a treat. Feels solid and strong.

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Luke Cyca .com