Maybe there is hope  

Re: Myabe there is hope

Have faith...

Use 'the Force!'

😀

Joan

Re: Myabe there is hope

Likewise with people who have issues with the single filament printer I wonder if there is a correlation between self built and Prusa built regarding issues.

Re: Myabe there is hope

Maybe there's hope....

... that one day someone will post a topic in the correct forum 😉

This was posted in the Mk2/S MMU1 forum. But not to worry, I will move it to the MMU2 forums 🙂

Peter

Re: Myabe there is hope

To clarify I purchased the mk3 kit several months ago and it has been exactly what I wanted it to be. A set it and forget it machine. Something I never got to experience with my myriad of Chinese clones. I was hoping the mmu2 would be the same...I had the palette plus, but it was more of a project than a toy...not wanting to repeat that.

Sorry for the wrong forum peter.

Re: Maybe there is hope

I've had my MMU 2.0 for a week and it's been nothing but a headache. I cannot get a single thing to print successfully. Nothing but skipped layers or ground up filament. I've performed the individual filament calibration, according to the guide, and even that is a PITA.

Prusa printers are known for their user friendliness and exceptional print quality. Unfortunately, I think the MMU 2.0 will have the same reputation as MMU 1.0; a finicky novelty.

Re: Myabe there is hope

Maybe there's hope....

... that one day someone will post a topic in the correct forum 😉

This was posted in the Mk2/S MMU1 forum. But not to worry, I will move it to the MMU2 forums 🙂

Peter

I moderate for some other forums and can assure you someone will always post a thread in the wrong spot. There is no hope with that one. That's almost like asking someone to read or use the search feature.

Re: Maybe there is hope

On my 3rd attempted print I got the 1st filament to load properly.
On my 5th attempted print I got the 1st filament to unload properly.
On my 6th attempted print I got a single color change to happen.
But then, when switching back to the first filament the take-up loop kinked, and snapped the filament guide right off the roller tray.
+1 for motor strength
-10 for usability.

It's possible that, because my printer is in a plexiglass box and I'm running the ptfe tubes out through a slit that the tubes don't have enough room to move around properly during unloading to allow the beautiful filament as seen in the manual. My filament loops keep catching on other things and getting tangled, or not happening at all.

Maybe there's hope. If I can get a single print to happen from start to finish without any user intervention I'll let you know- and we can all be hopeful together.

Rocco

Edit- I do feel obliged to add that I am presently venting my frustrations, in case that wasn't obvious. While my single filament mk3 worked great the moment I finished building it, I will allow that a little 'getting to know you' time might be in order.

Re: Myabe there is hope

Sorry for the wrong forum peter.

Not a problem; you are not the first and you certainly won't be the last...

Posting in the wrong forum happens much more often since the forum revamp.

Peter

Re: Maybe there is hope

Maybe there's hope. If I can get a single print to happen from start to finish without any user intervention I'll let you know- and we can all be hopeful together.

Well, Attempt #7 completed successfully with no interference from me. I am much more pleased. I really wish there was more information transferred from the MMU to the mk3, though. There is an entire display available- why are we using a Blinky Light Code for communication?

Re: Myabe there is hope

Sorry for the wrong forum peter.

Not a problem; you are not the first and you certainly won't be the last...

Posting in the wrong forum happens much more often since the forum revamp.

Peter

No surprise. This place has way too many sub forums. IMHO of course 🙂

Re: Maybe there is hope

+1

Hope there's not a math sub-forum 😆

Re: Maybe there is hope

The MMU 2.0 has been, in my opinion, utter garbage so far. The idea that for this thing to work you need to use Prusa’s own filament- which was not even officially announced until after the MMU 2.0’s release- is ridiculous.

Honestly I love the MK3 but this whole thing has been a debacle.

The delays, the extensive beta testing (that resulted in a released product that feels like an alpha), the complete and total lack of mentioning that it would more than double the footprint (spool holders requiring 40 cm), the fact that the product shipped with hobbed gears with deviations of as much as 10% and with no way to individually calibrate them, all of it has seemed like Kickstarter project level shenanigans.

I appreciate the work that went into it- the hardware seems great when it works- but one of the topics in this very forum is someone who has made better firmware in something like three weeks for their pitch of their services to JP.

Re: Maybe there is hope

all of it has seemed like Kickstarter project level shenanigans.

+1
I've been complaining too but that made me laugh the way you put it. Perfect description.

Re: Maybe there is hope

The MMU 2.0 has been, in my opinion, utter garbage so far. The idea that for this thing to work you need to use Prusa’s own filament- which was not even officially announced until after the MMU 2.0’s release- is ridiculous.

Honestly I love the MK3 but this whole thing has been a debacle.

The delays, the extensive beta testing (that resulted in a released product that feels like an alpha), the complete and total lack of mentioning that it would more than double the footprint (spool holders requiring 40 cm), the fact that the product shipped with hobbed gears with deviations of as much as 10% and with no way to individually calibrate them, all of it has seemed like Kickstarter project level shenanigans.

I appreciate the work that went into it- the hardware seems great when it works- but one of the topics in this very forum is someone who has made better firmware in something like three weeks for their pitch of their services to JP.

I'm getting great prints with the cheapest filament I can find on Amazon (Inland). Did it require some tuning? Sure. Things I've done that I think helped

I for one am quite glad it was released when it was. That said, I would definitely not suggest it as a first printer for somebody new to the hobby. The fact that it is only released as a kit helps that a bit.

Re: Maybe there is hope

The MMU 2.0 has been, in my opinion, utter garbage so far. The idea that for this thing to work you need to use Prusa’s own filament- which was not even officially announced until after the MMU 2.0’s release- is ridiculous.

Honestly I love the MK3 but this whole thing has been a debacle.

The delays, the extensive beta testing (that resulted in a released product that feels like an alpha), the complete and total lack of mentioning that it would more than double the footprint (spool holders requiring 40 cm), the fact that the product shipped with hobbed gears with deviations of as much as 10% and with no way to individually calibrate them, all of it has seemed like Kickstarter project level shenanigans.

I appreciate the work that went into it- the hardware seems great when it works- but one of the topics in this very forum is someone who has made better firmware in something like three weeks for their pitch of their services to JP.

I'm getting great prints with the cheapest filament I can find on Amazon (Inland). Did it require some tuning? Sure. Things I've done that I think helped

I for one am quite glad it was released when it was. That said, I would definitely not suggest it as a first printer for somebody new to the hobby. The fact that it is only released as a kit helps that a bit.

-I am also starting to get good results. Mostly due to Paul's ramcool script.
-I am using several different kinds of filament (Inland, Inland Premium, Prusa, 3D Solutech, Maker Geeks, Hatchbox) and getting nice consistent tips most of the time
-I cannot stress enough how important temperature is for most of these filaments!!!! In my experience most of them like a lower temp while ramming...it makes them way less prone to stringing.

Re: Maybe there is hope

I've been doing a better job of inspecting my tips. I'm finding that (even without the ramcool script) several colors of Inland PLA give me amazing tips *every time*. Not even the slightest hint of a string ever. However, several other colors (same brand, same order, stored the same way) give me strings I can't control.

It's all about the filament.

Re: Maybe there is hope

Unfortunately I don't think lowering the temp would resolve my issue. I keep having an issue with the MMU grinding down filament. I tried performing the individual filament calibration, with freshly cut filament, and the MMU feeds inconsistent lengths every time.

During the calibration process sometimes the MMU will feed the filament halfway down the heat break and others it on even feed into the extruder. I spent a few days tweaking idler tension and trying to calibrate this thing. I've thought I had it dialed In a few times and then during print the MMU will feed the filament so far into the bondtech that the filament grinds or it doesn't feed it enough and the print misses a layer.

Re: Maybe there is hope

Unfortunately I don't think lowering the temp would resolve my issue. I keep having an issue with the MMU grinding down filament. I tried performing the individual filament calibration, with freshly cut filament, and the MMU feeds inconsistent lengths every time.

During the calibration process sometimes the MMU will feed the filament halfway down the heat break and others it on even feed into the extruder. I spent a few days tweaking idler tension and trying to calibrate this thing. I've thought I had it dialed In a few times and then during print the MMU will feed the filament so far into the bondtech that the filament grinds or it doesn't feed it enough and the print misses a layer.

Sounds like me over the weekend...i ended up doing two main things that i think helped the most....cut the tubing for the filaments down to like 5 inches of tube sticking out of the machine...and threw away those black 3d printed rotating things attached to your spool holders.

Went from constant retracting issues on almost every color change to 1 bad unload in an 8 hr print.

Re: Maybe there is hope

I appreciate the work that went into it- the hardware seems great when it works- but one of the topics in this very forum is someone who has made better firmware in something like three weeks for their pitch of their services to JP.

About that....One thing I've learned is that it takes a lot more work to get a tested product out the door than to produce a demo video.

It might be that someone really did make better firmware in a few weeks. Or maybe not.