Filament grinder

From silverwiki

diy filament grinder made from a bicycle steering section. Made to process old prints into small enough chunks to be used to make new filament. This machine is intended to feed a filament extruder

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using

‎filament to be ground up

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filament after one grind

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filament after second grind

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making

Cut off an aluminum headtube and opened the holed from the upper tube into it

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Drilled a bunch of holes (more than here...) into the steering fork tube for teeth

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You can see the basic idea. Spin and the hole goes around and nibbles bits off

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Seems to work

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