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Scant Extrusion

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Hi everybody;

We are still plunking away at getting our Ultimaker Original+ kit going, but are having issues with feed and flow of filament. We are experimenting with 10x10mm cones.

Using all default settings in Cura, and PLA shipped with the printer, filament oozes from the nozzle until the print starts, and then scant. Pushing filament by hand, it comes out. Cancel print, head oozes until cooled.

Feeder purring and advancing - check

Tension/Spring screw tighten and loosen - not much diff

Head fan was coming on and dousing temp, ruining base of cone - turned off

Press feeder spring wheel against filament - variance but not working

The odd thing is that last week it made the cone. Under extruded (gaps), but a cone. Now it starts out well, but ends in little mounds of under extrusion. Head temp is holding.

What have we done wrong?


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