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Cooling move after finished print  

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DerMarvin
(@dermarvin)
Active Member
Cooling move after finished print

Hello,

i recently assembled my MK3S+ with the MMU2S attached.

After some problems (Wich is completely normal at the beginning 😀 ) I got all my filaments to work nicely when printing with multiple colors or with a single color. I set up the cooling parameters to get a well formed filament tip when changing colors and I successfully printed some multi color prints without errors while changing the filaments.

But there is one thing that is really annoying and I can't figure out how to fix it:

After the print is done (no matter if single or multiple color) when the printer wants to unload the filament, it gets stuck every time. And I saw that it wasn't making the right cooling move I set up, it doesn't make the right ramming sequence also. It just does the "standard cooling move", Wich isn't forming a good tip.

How can I get the printer to do my desired cooling move when unloading the filament ?

 

Thanks for your help.

This topic was modified 11 months ago by DerMarvin
Posted : 30/12/2020 7:02 pm
JoanTabb
(@joantabb)
Moderator
RE: Cooling move after finished print

You could modify the custom gcode, end gcode. but I think you would have to spell out the changes rather than rely on the slicer configuration. 

Or, Could you add an extruder change right at the end?  ( I would try this myself, but I am 75 miles from my MMU2S) 🙁

Perhaps an 
M702 C
could be used to unload the Current Filament


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...
Posted : 30/12/2020 7:13 pm
DerMarvin
(@dermarvin)
Active Member
Topic starter answered:
RE: Cooling move after finished print

Thanks for the fast reply.

I took a quick look at a test .gcode and it looks like there is already a M702 C at the end of the print.

I will take a closer look at the .gcode to see what it does exactly after finishing the print. 

Posted : 30/12/2020 8:53 pm
DerMarvin
(@dermarvin)
Active Member
Topic starter answered:
RE: Cooling move after finished print

So i made a few test .gcodes to figure out how exactly the printer is doing the unloading sequence.

I figured out, that when you are using a wipe tower, the printer is doing the correct unloading sequence. When you are printing with a single color, the printer only does a standard unloading sequence, wich is specified here:

As you can see it does an if case to decide if there is a wipe tower or not.

Is there a setting or a gcode command to use the filament specific unloading sequence at this point ? Because if I just copy the unloading settings for my filaments and paste it there i need to change it every time i use a different filament.

Im curious because i cant imagine im the only one with such a problem 😀

Maybe someone found another solution to this problem

 

Posted : 02/01/2021 8:33 pm
JoanTabb
(@joantabb)
Moderator
RE: Cooling move after finished print

there is also a Custom G code Setting in the Filament settings menu, so you could do your filament \specific changes there

 

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...
Posted : 02/01/2021 10:18 pm
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