Compact general purpose extruder
by Wired1, published
Superceded by http://www.thingiverse.com/thing:59352
I have been using my quikfit compact extruder for many months and prints and finally it blew apart tonight and fortunately I still had a spare but that is my last one and I really need an extruder suitable for hotter temperatures for nylon and ABS so this extruder will use an aluminium plate below the extruder to hold a J-head hot end. The alloy plate will remain solid at higher temperatures and should have better print quality for longer.
There are two versions here, one is just the extruder and idler and the other also has my 45/11 gear set for a complete extruder in a tray for printing.
When finished it looks very similar to the one in the photos on my OB1 printing out the new version.
Print it out at .25mm layer height, 40% fill, 2 perimeters and 2 tops & bottoms.
Drill out the motor mount holes and the idler hinge hole with a 3mm drill.
Drill out the base mount holes with a 4mm drill.
Run a 3.5mm drill through the filament hole.
Drill out the small gear middle to 5mm.
Drill out the large gear centre to 8mm.
Cut away the built-in support for the idler with a razor blade or just snap it off with your fingers.
Cut a 20mm long section of 8mm rod for the idler 608 bearing and snap it into the idler (best to do this when it is warm, ie put it in the sun for half an hour).
Use 2 more 608 bearings either side of the hobbed bolt.
Add three M8 washers between the large gear and the extruder body.
Use 2 x 50mm long M3 screws, washers and springs for the idler tensioner.
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Compact general purpose extruder by Wired1 is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
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