MK2 not starting cooling fan or waiting for preheat to finish
Hi all,
My MK2 is not not starting the parts cooling fan at the layer it is set to start on. I can however start the fan manually from the printer control panel so the fan does work.
It is also not waiting to preheat before starting a print.
What I mean is this. I set the MK2 to preheat to PLA defaults. Once it has preheated and sat for a bit I select the file to print from SD card which will have different temps than the defaults for preheating such as the bed will be 65 instead of 55.
When I select the file to print it goes immediately to printing. It no longer waits for the bed or extruder to heat to my selected temps. What it used to do when you selected the file to print was to heat the bed and extruder to the temp for the print. It would display "heating bed" or "heating" and the bed and extruder would go to the temps selected for the print. Then it would start the leveling process then start the print.
Now it just goes immediately to leveling then print and the bed is still heating.
This is a recent change and I don't know if it coincides with updating the firmware or something else recent. We did have a power outage during a print that shut the printer off so maybe this messed with the firmware. Of course it's the only printer not on backup yet!
Nothing has changed with slicers to my knowledge and the other printers are working as normally expected.
Re: MK2 not starting cooling fan or waiting for preheat to finish
Hi Wirlybird,
it's worth checking the Gcode.
My Slic3r code starts :- (PETG temperatures)
; generated by Slic3r 1.31.6-prusa3d-win64 on 2017-03-27 at 00:03:43
; external perimeters extrusion width = 0.45mm
; perimeters extrusion width = 0.45mm
; infill extrusion width = 0.45mm
; solid infill extrusion width = 0.45mm
; top infill extrusion width = 0.40mm
M107
M115 U3.0.9 ; tell printer latest fw version
M83 ; extruder relative mode
M104 S230 ; set extruder temp
M140 S85 ; set bed temp
M190 S85 ; wait for bed temp
M109 S230 ; wait for extruder temp
G28 W ; home all without mesh bed level
G80 ; mesh bed leveling
G1 Y-3.0 F1000.0 ; go outside pritn area
G1 X60.0 E9.0 F1000.0 ; intro line
and my Simplify3D cove starts like this :- (PLA Temperatures)
G90
M83
M106 S0
M140 S55
M190 S55
M104 S215 T0
M109 S215 T0
M201 X1000 Y1000 E600
M92 E161.3
G28
G92 E0.0
G1 X8.0 F2000
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: MK2 not starting cooling fan or waiting for preheat to finish
Yeah, it does rather sound as though you have the wrong settings selected or you have made some changes to the start GCode.
Which slicer are you using?
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: MK2 not starting cooling fan or waiting for preheat to finish
Currently I am using S3D for these prints. I have not changed anything I am aware of that would affect it. This has not been an issue until just recently.
I do need to test Slic3r also to see if it is doing it or running correctly, or as I expect it to. I can try it tonight now that a print has finished.
Starting gcode is untouched. I am using the RK4 FFF profile or what ever the number is that is on the Prusa site.
The print does set the correct temps but it is no longer waiting for the temps before it starts the print. It is also making the extruder and bed temp changes after the first layer as expected but that fan doesn't come on at the second layer like it used to.
Two issues but I bet they are related.
Re: MK2 not starting cooling fan or waiting for preheat to finish
This is the default start script in S3D for the MK2. There is nothing about stabilizing the temps or waiting for the set temps to be reached before starting a print.
M115 U3.0.7 ; tell the printer latest firmware varsion available
G28 W ; home all without mesh bed level
G80 ; mesh bed leveling
G1 Y-3.0 F1000.0 ; go outside printing area
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
Re: MK2 not starting cooling fan or waiting for preheat to finish
this is an old start script. if you want to use it, add the temperature statements from the examples above, or considder using more up to date alternatives.
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: MK2 not starting cooling fan or waiting for preheat to finish
Ok. This is what is in the Prusa FFF for S3D and in the S3D supplied one. It is what I have always used as I never touched it.
I am going to try a print from Slic3r just to verify it works correctly. If it does which I am assuming it will then the question is what happened with S3D since I never changed or modified the scripts. I have been using the RC4 since last fall with no issues until last week or so.
Thanks for the input!!
Re: MK2 not starting cooling fan or waiting for preheat to finish
this is an old start script. if you want to use it, add the temperature statements from the examples above, or considder using more up to date alternatives.
regards Joan
My Slic3r script looks the same. My S3D start of the gcode for a print is the same also but what about the starting script in S3D?
Re: MK2 not starting cooling fan or waiting for preheat to finish
I just received my Prusa printer today and downloaded the S3D FFF file from here:
http://shop.prusa3d.com/forum/original-prusa-i3-mk2-f23/simplify3d-print-settings-august-30-2016--t938.html#_ga=1.166592510.1332067008.1486303331
It does not contain the :
G80 ; mesh bed leveling
Maybe some other goodies to add also ?
This is how my start script for S3D looks now:
G28 W ; home all without mesh bed level
G80 ; mesh bed leveling
G1 Y-3.0 F1000.0 ; go outside printing area
G1 X60.0 E9.0 F1000.0 ; intro line
G1 X100.0 E12.5 F1000.0 ; intro line
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Gert
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Gert