u/Siggard

Image 1 — Is this heat creep?
Image 2 — Is this heat creep?
Image 3 — Is this heat creep?

Is this heat creep?

Sorry if this is an stupid question or if the photos are not helpful.

Lately I've been trying to print some terrains for WH40k. The ruins I'm trying to print re foldable and the small ones print without any issue, but the longer ones fail after some time.
It seems to be a clog, because filament simply stop going through and the extruder starts to skip and grind the filament.

Restarting or printing something else always seem to fix the issue without need to unclog the nozzle.

I've tried reducing extrusion distance and speed and still the issue persist. The failed print from the photo is the second atempt at a large ruin which clogged after 1hr and 30min of print (+- 5mm high). The first one failed at the same time. Curiously, in between failed attemps I managed to print a smaller ruin (4:30hr print), with the only difference being that the model had thicker walls.

Currently I'm sitting at :

  • 195-200 degress (have tried both)
  • 2mm retraction
  • 25mm/s retraction speed
  • 50mm/s printing speed
  • 15mm/s first layer
  • 0.2mm layers
  • 5% gyroid infill

Printer has the original stock heatblock and fans, metal extruder, runout sensor, autolevel and magnetic PEI. I'm considering using a bi-metal heatbreak and replacing the fan, since anything more expensive than that at this point and I'd consider getting a newer model, since I've had this one for 3 years now.

u/Siggard — 5 days ago
▲ 3 r/ender3v2+1 crossposts

Out of ideas on how to fix this?

It started a while back out of nowhere.

Prints start fine but then the gear starts going back and forward and the gear seems to skip.

Layers come as if the nozzle was clogged, like a web or stringing.

After some time the layers start coming out as normal again.

I've tried both Cura standard 0.2mm and 0.16mm layer settings, reduced retraction speed, increased and decreased temperature. Nothing seems to work.

I've replaced the nozzle and Bowden tube and checked for clogs but the issue still remains.

I dont have a stock printer: currently I have an autolevel sensor, runout sensor, magnetic PEI build plate and metal extruder.

Print are being done at a range of 200-210 degress and bed at 60.

Layer speed is set at 5mm for the first layer since my PEI has sticking issues at higher speeds, and then defaults to 50mm/s.

Infill is 20% gyroid.

Tried Cura's auto tower add-ons but those seem to print just fine. Benchy and anything else always fail

u/Siggard — 13 days ago