SoliForum - 3D Printing Community — Extrusion jamming in only a certain part of the bed?

Re: Extrusion jamming in only a certain part of the bed?

null@example.com (Goshdarnit) — Sat, 06 Jun 2015 08:13:35 +0000

Agree with carl. Looks like a break in one of the wires to the extruder stepper.

Re: Extrusion jamming in only a certain part of the bed?

null@example.com (carl_m1968) — Sat, 06 Jun 2015 06:20:04 +0000

You have a bad wire harness. I would move the head to the problem position then ohm out the wires for the motor and even heater to see if the temp could be dropping in that area due to a bad harness.

Extrusion jamming in only a certain part of the bed?

null@example.com (Illy) — Sat, 06 Jun 2015 05:24:06 +0000

Every time my extruder passes over a certain XY coordinate, the extrusion wheel starts to skip, leaving these ugly scars in my print. However, extrusion returns to normal as soon as the extruder leaves that area (and starts skipping again as soon as it returns)

I can't imagine what's causing this. Filament is feeding in from above and center of the build plate, so like it's having a hard time pulling the plastic because it's too far away. I would have thought it was something like the z offset being to close and the print head not having enough room to push out plastic, but it seems to happen even when the extruder is pushing plastic out into open air. Any thoughts?