Now that is some fine jiggery!

I also hate the weed whacker line feeds, work of the devil.

You could go further and using your original jig, pack it full and cut to length at the band/table saw. Install a air hose coupler at the dowel and a shot of compressed air would liberate the strands. Being substantially longer they should be easier to police up around your shop that the short auto-cutoffs that put you down on your knees.


Thinking further, maybe a washer that fits into the tube, long screw through the washer to create a plunger. Shaft of the plunger through a hole in the dowel. When done cutting, push the plunger to expose an 24.5mm or so length to grab onto and pull the buggers out.