Changing temperature for a print and more problems
Continuing on my experience with the Mk3 built from the kit, I had been getting good prints from the printer (in spite of bad first layer which I cant seem to fully fix). I completed a 30 hour print with hatchbox PLA filament with stock settings (215 nozzle temp) which was very good
I was super happy with it.. and then..
I got another filament that required higher nozzle temp (235) and when I try to dial that in during the print with the tune menu, the temp seems come down (or at least it couldn't hold it there) and I noticed that it was down to 210 and the print was a mess. After few tries, I gave up and decided to load PRUSA filament and started a print. That ended up in a mess and I realized that there was a blob of the PRUSA filament around the nozzle 🙁
After reheating the nozzle and cleaning it up,. the calibration (which has been super finicky) has been a problem again. This is with no change to anything else (no adjustments of any kind). I was then stuck with adjusting that PINDA probe up and down to get the xyz calibration to pass and finally got it to pass calibration (still not sure why it did that).. but the first layer calibration is totally messed up now (with a Z of -1, the filament doesn't stuck and just moves around). I guess it is back to adjusting that sensor now.. sigh
My question is, Did I do the correct thing when trying to change the filament temp (using the tune->temp method) and why would the temp not maintain at 235? and That seemed to have made things go down hill (including reset-> calibration to fail). What else can I check to get this thing to pass calibration reliably. I am worried about even testing with PETG filament given this behavior now.
<rant> : The PINDA calibration is PITA! Given how sensitive that height seems to be for the calibration routine, the adjustment is woefully inadequate and it will atl east be helpful to know if it is too high or too low or some way to get a sense on which direction to fix it OR have a way to perform fine adjustment </rant>
Re: Changing temperature for a print and more problems
You should use the filament profile in Slic3r to set the print temperature. If you change it on the front panel during a print the new temperature might not stick, since the gcode commands can override it.
Re: Changing temperature for a print and more problems
Thank you!
I finally got it back to its working state . I was using prusa control slicer and just selected PLA. I will redo it with Slic3r prusa edition and set the temp and try again.
Re: Changing temperature for a print and more problems
You should not change the temperature manually!
Do as Peter says and use the material profiles found in Prusa Control or in Slic3r. There are complete profiles for PLA, PETG and several other materials. Prusas material profiles are calibrated for your printer so there is no need to change any other parameters.
Most problems reported in the forum are caused by a bad Z-level calibration and a poorly cleaned bed.
The most common mistake is that the nozzle is too high above the bed, which makes the filament lifted and stuck on the heat block.
Bear MK3 with Bondtech extruder
Re: Changing temperature for a print and more problems
You are not actually moving the PINDA probe physically up and down, are you?
Re: Changing temperature for a print and more problems
I just ran into the same issues of the temperature dropping when I try to set it up for PETG. All of my printing up until now has been with PLA of three different manufacturers.
I wanted to try some crystal blue PETG that I had so selected it in the window to heat up, but when it goes to print it changes the PET settings of 235 for the nozzle and 85 for the bed down to 210 and 60.
Then I noticed all of the files on the SD card said PLA? Is there no way to change the setting on the printer? Where do you copy the file which is gcode and change it to the STL file. Is it the STL file where you set the temperatures?
Where do you select the filament type? Just in the Slic3r?
Re: Changing temperature for a print and more problems
The files on the SD Card were sliced for PLA- the slicer profile is what sets the temps, speeds, and other print factors. If you want to print with PET, you need to re-slice (in other words you will have to load the original STL files into your slicer, set your filament parameters, and re-slice .) You could also hope for the best and manually bump the temperature after it starts the print by going to the Tune menu.
Most (not all) of the original STL files came with the Prusa drivers download.
Re: Changing temperature for a print and more problems
I was thinking about that last night. I need to find the STL files for the same objects.
Re: Changing temperature for a print and more problems
I was thinking about that last night. I need to find the STL files for the same objects.
The STL files are installed on your computer. In my case they are here:
C:\Users\Public\Documents\Prusa3D\Objects 214\MK3
Bear MK3 with Bondtech extruder
Re: Changing temperature for a print and more problems
The STL files are installed on your computer. In my case they are here:
C:\Users\Public\Documents\Prusa3D\Objects 214\MK3
Thanks for pointing that out.