Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.  

Re: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

I don't think he is a "The Crusty ole guy" but he is tired of it. I have my shares of fails still but they are getting less and less. one thing ive noticed is 1 filament route gets and issue, fix that. then a few prints later another route gets a issue. I'm not a fan of Bowden tubes.

I do think the biggest issue is the missed layers that can be caught if the damned filament sensor was on.
I don't think we mind too much fixing a filament now and again. but to have a skipped layer is just sad.

Re: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

I received my MMU2 on 08-10-2018. Last Saturday I threw in the towel, pulled out the MMU2 power cable, took down all my filaments, and converted my Mk3 back to use single filament only.

I love to tinker. I love to make things work. I have built working printers from scratch. But the MMU2 is a bridge too far. Too many wasted weekends and scrap filament and I cannot see this will ever be as reliable in its present form as the Mk2S and the Mk3.

Between this and the powder coated sheet saga... well...

And I am glad I cancelled my day one order for an SL1 which should have shipped in December. Has anyone even seen a working unit yet?

I am a Prusa fan and I am worried how things are going. PR need a success story right now I think.

Re: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

i watched the video and i know where his failures are and the machine could be made to work better but due to the complexity of a tool change there is always the chance for a failure and i can understand he expected more of an end user machine which the MMU2 is not. many pieces of the current MMU2 are not implemented or half finished.

the MMU2 could be many times better then it is and many people are working to make it better but where the hell is prusa? for the last 2 years they are no longer the company they were. no interaction on the forums, no official responses to peoples complaints. total breaking of promises that made about things that were suppose to happen years ago even going back to the MK2 machines. right now if seems like they pulled all support people and stuck them on the SL1 project.

We have people came up with firmwares that fix issues they contact prusa and get zero response. for the Early MK3 people like me prusa was a nightmare it took the people on the forums that fixed the MK3 enough that it functioned at all and only one time was the yelling so loud that prusa listened. (Live Z issues with Pinda readings)

my MK3 spent about 6 months in a box after i got it because it was so messed up it barely worked. i've replaced just about every prusa orange PETG piece on it going through multiple fixes just to get it somewhat decent as compared to a MK2S which is a workhorse.

Re: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

Early MK3 people like me prusa was a nightmare

I'll take solice in the fact that my i3 Mk3 has been absolutely rock solid. I had an issue once, which was shitty filament, but other than that it's been sweet as. I've just done 5 prints of the same gcode, only 10 hrs each, 5 different filaments and they have worked every time (even with a quirk in the slicer's interpretation of one movement/extrusion of 3 single crazy filament threads which bridge a hollow cylinder - I've seen these threads in every print even with different filaments - the gcode tells it to do it, and it does). For me, tricky prints work. Everything just works.

My mmu2 just shipped. I am optimistic that the mmu2 will improve and bugs in hardware and software will eventually be sorted out. It massively sucks for the early adopting enthusiastic people though, who champion the brand the most. They probably should have waited 12 months before releasing it for sale and doing a proper beta test with actual beta testers, and not the public.

Re: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

Early MK3 people like me prusa was a nightmare

I'll take solice in the fact that my i3 Mk3 has been absolutely rock solid. I had an issue once, which was shitty filament, but other than that it's been sweet as. I've just done 5 prints of the same gcode, only 10 hrs each, 5 different filaments and they have worked every time (even with a quirk in the slicer's interpretation of one movement/extrusion of 3 single crazy filament threads which bridge a hollow cylinder - I've seen these threads in every print even with different filaments - the gcode tells it to do it, and it does). For me, tricky prints work. Everything just works.

My mmu2 just shipped. I am optimistic that the mmu2 will improve and bugs in hardware and software will eventually be sorted out. It massively sucks for the early adopting enthusiastic people though, who champion the brand the most.

RE: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

RE: Ruh Roh, The Crusty ole guy from Kuntry Time YouTube is throwing in the MMU 2.0 towel.

My MMU2S is working fine and reliable. Best with multi-color but I also work with PLA/PETG/PVA combinations.

Hardware is still stock but I use my own adjusted filament profiles.

The Prusa defaults usually produce fat tips. So, I reduced the "number of cooling moves" and if the tip is stringy I raise the "unloading speed at the start". (If the tip is "stretched" you need more cooling moves and if the tip is completely blunt then the unloading speed is to fast.)