Nozzle gets stuck during first layer
Hello,
I am trying to print https://www.printables.com/model/113494-multipart-pinecilts100-case/files with PETG
When printing the top case, my first layer starts Ok and then, arround 3/4's done (on the first layer), the hot-end gets stuck. When I extract the fillament, I see that it has expanded around the heatbreak (causing the extruder to not be able to move the fillament by himself).
Is there any setting I can change in the slicer so that the heatbreak actually breaks the heat during the first layer?
RE: Nozzle gets stuck during first layer
I found a solution.
I adjusted a temperature setting in the slicer. Turns out, if you go to Fillament settings, cooling, and put the setting disable fan for first layer's to 0, the first layer comes out fine.
RE: Nozzle gets stuck during first layer
that is the normal PLA setting in Prusa Profiles
PETG normally has the fan off for three layers
Regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Nozzle gets stuck during first layer
I found a solution.
I adjusted a temperature setting in the slicer. Turns out, if you go to Fillament settings, cooling, and put the setting disable fan for first layer's to 0, the first layer comes out fine.
This seems odd. I've heard of fans getting plugged in backwards, where the heatbreak fan is plugged into the print cooling fan, and vise versa.
Can you confirm your heatbreak fan is running as it should? Simply pre-heat the printer, and once the print heat reaches a certain temp (50 °C?) the heatbreak fan will start running, and keep running until the print head cools again. The print cooling fan does not run until printing. But if you pre-heat and the cooling fan starts running, but not the heatbreak fan, the fans are plugged in to the opposite fan ports.
RE: Nozzle gets stuck during first layer
The printer is now completing a print though. It has run for more then a hundred hours at this point. So Strange that it didn't cause problem's before. I know that when the printer heat's up, the blower fan at the back of the hot-end start's. But not the hetbreak one
RE: Nozzle gets stuck during first layer
It just finished the print, I confirm that the fan that stay's running is the blower at the back (so not the hot-end fan). Changing that now
RE: Nozzle gets stuck during first layer
Ok. I confirm that this was the problem. I was able to hot-fix it with a change in the slicer setting. That problem can go un-noticed for a long time though. Until now, I passed 5KG of fillament through the printer without having miss-prints due to the hot-end.
Now it's fixed. (I don't know if there is any possibility to make it more clear in the self-check so that users can easyly troubleshoot something like that before it happens)
I found a solution.
I adjusted a temperature setting in the slicer. Turns out, if you go to Fillament settings, cooling, and put the setting disable fan for first layer's to 0, the first layer comes out fine.
This seems odd. I've heard of fans getting plugged in backwards, where the heatbreak fan is plugged into the print cooling fan, and vise versa.
Can you confirm your heatbreak fan is running as it should? Simply pre-heat the printer, and once the print heat reaches a certain temp (50 °C?) the heatbreak fan will start running, and keep running until the print head cools again. The print cooling fan does not run until printing. But if you pre-heat and the cooling fan starts running, but not the heatbreak fan, the fans are plugged in to the opposite fan ports.