Flow tuning [persistent
Hi,
I have recently assembled the MK3 kit and I have a problem with the Tune>Flow setting not resetting itself.
My first print was made from a file sliced for my older Pruse i3 MK2s, and it had a EM 1.05 filament setting in it. This caused over-extrusing half-way throught the 14hr print, which I resolved by using Tune>Flow>95% . The rest of the print from there on was perfect.
After the first print finished, I measured filament length pushed into the extruder vs what was requested, and it was near 100% accurate. Very nice!
However, since then every print shows Flow 95% if I check in the Tune menue during printing.
I am quite convinced that I have pressed the reset button several times, and pulled out the power plug several times since I tuned Flow to 95 %, but it stubbornly keeps popping back up at 95% with each new print.
I have reset the Tune>Flow to 100% several times but it comes back as 95% with each new print.
Even when I set Tune>Flow>100% during a print, and then leave the printer on and restart a new print, it reverts to 95% flow.
What can I do to stop this?
Any hints will be much appreciated, Mik
Re: Flow tuning [persistent
Are you using Prusa's Slic3r? If so, the flow rate is being set by Slic3r.
M221 S{if layer_height<0.075}100{else}95{endif}
This is found in Printer settings -> Custom G-code -> Start G-code
Re: Flow tuning [persistent
Hi Mik.
Look in your start Gcode in the slicer. There is probably a conditional line that sets 95%flow for all layer heights in excess of 0.075mm.
This is probably what is causing your issue
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: Flow tuning [persistent
Thank you Joan and John,
I found it in the Start g-code:
M221 S{if layer_height==0.05}100{else}95{endif}
This line (or a similar one) was not present in the previous Slic3r version, or maybe it was, but I had been using my own custom Printer settings including start g-code for a while.
Looks like I'll have to do another print without changing the Flow rate manually, to see if it gets even better. 🙂
The last print came out near perfect, maybe it gets even better when I stop interfering!
Funny coincidence that I set the Flow rate manually to 95% for the first print (sliced for MK2), that red herring has led me astray for several days!