On 8/16/20 1:07 PM, Gene Heskett wrote: > the guy on y-t showing a razor blade being used in a jig, > hopefully to get a square cut. Not having a razor blade, or the jig he > was using, I cut it about half a mm long and took the hot block with it > sticking out to a piece of 320 sandpaper and sanded it flat, reversed > the tubing and sanded the other end flat.
The extruder on my 3D printer uses a short piece of 4mm OD PTFE tubing as the heat break between the hot end and the cold end. This part needs to be replaced when clearing a clogged nozzle. I designed and 3D printed a miniature miter block that guides an X-Acto knife to make a clean perpendicular cut so I could make a pile of replacement PTFE tubes.
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