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MMU2 for finishing almost empty spool  

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arthur.c2
(@arthur-c2)
Trusted Member
MMU2 for finishing almost empty spool

Does anybody have tried printing with almost empty spools for the MMU2 automaticly change when ending one ?

I didn't see any post or guide explaining how to do but it's sell as a posibility.

I did sliced a part in Single mode and start a print with a short piece of filament but it passed the FINDA and nothing happened.

(By the way why the printer didn't stop at least ?)

I think that for an effective change you still need a little purge tower for ramming and get a sufficient pression in the nozzle when loading a new filament, but if you slice in Multi material with a single part, there's no purge tower.

So how are we supposed to do ?

Thanks

Veröffentlicht : 27/10/2018 8:23 pm
nuroo
(@nuroo)
Reputable Member
Re: MMU2 for finishing almost empty spool

Does anybody have tried printing with almost empty spools for the MMU2 automaticly change when ending one ?

I didn't see any post or guide explaining how to do but it's sell as a posibility.
In firmware, turn on auto depletion

Prusa MK3 preassembled (R2/B6) > (R3/B/7)
Prusa MK2.5 kit > MK3 > MK3+MMU2 (R3/B/7) 😀
Prusa SL1 3D printer + Curing and Washing Machine (day1 order)
Taz6
CR10s4
Delta 3ku

Veröffentlicht : 27/10/2018 9:00 pm
arthur.c2
(@arthur-c2)
Trusted Member
Themenstarter answered:
Re: MMU2 for finishing almost empty spool

Thanks, I tried but it didn't work.

I sliced in single mode and in MM mode but none worked, the filament pass the FINDA and nothing happen.

Veröffentlicht : 28/10/2018 10:54 am
Flaviu
(@flaviu)
Estimable Member
Re: MMU2 for finishing almost empty spool

You have to activate the filament sensor too.

Veröffentlicht : 29/10/2018 11:00 am
arthur.c2
(@arthur-c2)
Trusted Member
Themenstarter answered:
Re: MMU2 for finishing almost empty spool

Really ?

I thought it was no more used, for anything.

Is it reliable for this application ? lol

So how does it work, when it detects the end of a filament, it extrudes till it passes the bondtech, then load a second filament that will push the previous one ?

What happen during this operation ? Is the head place in a corner ? Cause you will need a pause the time to load a new filament and I'm sure a little underextrusion during the transition.

Whatever, I will try soon, thanks for answering !

This application is really interesting and anounce in the PRUSA's video but they didn't explain how to use it... at least not in the handbook...

Veröffentlicht : 29/10/2018 1:30 pm
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