Hot end settings cool down/heat up...
This doesn't affect my prints, but it seems really slow and odd. When start a print job, it first cools down to 175, then it levels itself, then it heats back up to 215 or whatever. I don't understand why it has to cool down first when it was at the correct temp loading the filament moments ago. I'm not sure how to change settings to support a more efficient process.
RE:
Basic physics, things expand when hot. If the levelling is calibrated at a specific temperature, levelling at a different temperature will give an inaccurate reading
RE: Hot end settings cool down/heat up...
The lower temperature is there so that the filament does not flow out of the nozzle so much and does not interfere with the measurement of the substrate.
RE: Hot end settings cool down/heat up...
This doesn't affect my prints, but it seems really slow and odd. When start a print job, it first cools down to 175, then it levels itself, then it heats back up to 215 or whatever. I don't understand why it has to cool down first when it was at the correct temp loading the filament moments ago. I'm not sure how to change settings to support a more efficient process.
I understand that, and I didn't understand it at first either. That's why I adjusted my G-codes for the XL and Core One so that they “accelerate” exactly that.
I don't want to compromise my print quality, but I also don't want to wait “forever” for the printer to finally start. Especially when it's small parts that only take a few minutes.
What do I do now?
- I move the Nextruder close to me.
- Then I clean the hardened nozzle, which is easier to clean without heating it up (if necessary at all).
- If I have a brass nozzle, I start printing right away when the print bed and nozzle are still cold. Then there is enough time to clean the brass nozzle while everything is preheating.
- The customized start G-code first heats the nozzle to a filament temperature that does not allow the filament to exit yet. For my PETG, it is 195 degrees, and for PCCF, it is 205 degrees. This reduces the time enormously when it reaches its target temperature after the MBL.
- Next, the bed is preheated and I wait. It can't start any sooner. I have deactivated “absorb heat.”
- Next, homing is performed and the print bed is searched for.
- My penultimate point is the MBL without nozzle cleaning because the nozzle is already clean.
- Finally, the purge is performed and printing can begin.
I have excluded everything else in the start GCode because I usually want to start printing quickly and don't want to wait for a routine that takes several minutes.
RE: Hot end settings cool down/heat up...
Thanks for all the thoughts. They have added to my knowledge! I'm considering this closed.