Re: Extruder Won't Heat--Upgraded to E3D
Second time: Have you measured the filament? Extensively, over several meters? What brand filament is it?
Re: Extruder Won't Heat--Upgraded to E3D
PTFE is there. Filament is Zen Toolworks ABS. I've measured it with calipers each time I calibrate, and it's pretty consistently close to 1.75
Re: Extruder Won't Heat--Upgraded to E3D
There are reports of widely varying diameter on Zen Toolworks stuff.
http://www.amazon.com/review/R2JB4VD69J … hisHelpful
It needs to be measured a few dozen times along 10-20ft to rule out diameter issues.
It is definitely possible you damaged the heatbreak by drilling, as previously discussed.
Re: Extruder Won't Heat--Upgraded to E3D
The heat break is fine. It wasn't damaged. I took great care using a much smaller bit, and only used it to grab the filament that was jammed. Plus, that wouldn't explain how it jammed the first time.
Re: Extruder Won't Heat--Upgraded to E3D
You said the first time was due to debris in the nozzle.
Something can be smaller and still damage the finish on the heatbreak.
Re: Extruder Won't Heat--Upgraded to E3D
Well, it would appear the PTFE tube had just the slightest gap which led to a small blob of ABS preventing extrusion. Cleared it out and all is well, for now.
Re: Extruder Won't Heat--Upgraded to E3D
ABS shouldn't be able to melt (or even soften) that far up into the break. I'd bet something else is amiss, cooling airflow or heatsink/heatblock gap related.