Is it possible to bypass the MMU3 for, say, flexi-filaments?
 
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Is it possible to bypass the MMU3 for, say, flexi-filaments?  

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TrackZero
(@trackzero)
New Member
Is it possible to bypass the MMU3 for, say, flexi-filaments?

I'm sure this is probably answered somewhere, but I haven't found anyone talking about it....One of the big problems I had with the MMU2 (and there were many), when I wanted to do a TPU print, I had to do a bunch of janky stuff to trick the filament sensor and then feed the filament physically outside of the MMU2.  I finally just unplugged the power & data connections & went to single-filament as my default.

Now I have the MMU3 upgrade kit, but before I install it...Am I able to physically bypass it via configuration/software for single-filament prints, or is it the same as the MMU2....once installed, it's the only way to feed filament?

Best Answer by JoanTabb:

the Mk3 and mk4 LCD Menu's allow you to turn the MMU3 off   (this may be a function of the daughterboard on the MMU, so may not be an option, on MMU2 using MMU3 Firmware... )

so yes, you can turn the MMU3 off, and use TPU Directly to the Printer, BUT... you will probably have to manually load the filament because TPU is unlikely to be rigid enough to push through the bondtech gears

regards Joan

Posted : 05/11/2023 7:33 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Is it possible to bypass the MMU3 for, say, flexi-filaments?

the Mk3 and mk4 LCD Menu's allow you to turn the MMU3 off   (this may be a function of the daughterboard on the MMU, so may not be an option, on MMU2 using MMU3 Firmware... )

so yes, you can turn the MMU3 off, and use TPU Directly to the Printer, BUT... you will probably have to manually load the filament because TPU is unlikely to be rigid enough to push through the bondtech gears

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

Posted : 05/11/2023 8:18 pm
TrackZero liked
K7ZPJ
(@k7zpj)
Reputable Member
RE:

Here is how I do it:

Disable the MMU3 and filament sensor from the LCD menu.

You can then feed the flex filament down the filament path.  On really soft filament, remove the idler,  get the filament down to the bondtech gears and then put the idler back on and tension it.

This works for the MMU2 too.  You disconnect the power to disable it.

 

This post was modified 4 months ago 2 times by K7ZPJ
Posted : 05/11/2023 8:21 pm
TrackZero liked
TrackZero
(@trackzero)
New Member
Topic starter answered:
RE: Is it possible to bypass the MMU3 for, say, flexi-filaments?

Awesome, thanks, then I think I will actually go ahead and finish this build. 🙂

Posted : 05/11/2023 8:43 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Is it possible to bypass the MMU3 for, say, flexi-filaments?

I like my MMU3... 

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 : 06/11/2023 5:33 pm
K7ZPJ and TrackZero liked
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