Category Archives: screw

No Filament Needed in this Direct Extrusion 3D-Printer

Ground plastic bits go in one end, finished 3D-prints come out the other. That’s the idea behind [HomoFaciens]’ latest build: a direct-extrusion 3D-printer. And like all of his builds, it’s made from scraps and bits most of us would throw out.

Take the extrusion screw. Like the homemade rotary encoders …read more

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Posted in 3d Printer hacks, direct, extrusion, heater cartridge, hopper, hot end, PLA, recycling, screw | Leave a comment

To Ferrule or Not to Ferrule?

We recently posted about a spectacular 3D-printer fire that was thankfully caught and extinguished before spreading to the hacker’s house or injuring his family. Analyzing the remains of the printer, the hacker determined that the fire was caused when a loose grub screw let the extruder’s heater cartridge fall out and touch the ABS fan shroud. It ran full-on and set things on fire.

A number of us have similar 3D printers, so the comments for this article were understandably lively, but one comment stood out by listing a number of best practices for wiring, including the use of ferrules. …read more

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Posted in insulation, interconnect, misc hacks, screw, sleeve, spring, stranded | Leave a comment