Existing MMU owners discount vouchers  

Re: Existing MMU owners discount vouchers

Nope... but I haven't got a voucher for the powder coated bed yet and I have had the Mk3 for months... the MMU hasn't arrived yet.

my upgrade has been on order since October!

regards Joan

Re: Existing MMU owners discount vouchers

I have just had a chat on their website. According to this person, the MMU vouchers would only be available when they start shipping the MMU upgrades. I asked why, but I haven't gotten an answer.

This is quite disappointing as the time for new orders has already moved from June to August. If they start sending out vouchers in June, then the new orders would probably be sent out October or November... (Let aside that Prusa is always late on these dates...)

Maybe the guy on the chat didn't have all the information or it wasn't correct, but this is disappointing.

Re: Existing MMU owners discount vouchers

Well I won't throw any more money at them until I get that voucher, so much is sure. I'm only considering it because I invested so much time already - it's probably a good thing not to be in the first wave. I really doubt this will work properly straight away.
My MMU is now in a box in the basement.

Re: Existing MMU owners discount vouchers

A !@#$%ing VOUCHER?

I'm beyond pissed and pretty much done with Prusa. With how crappy the MMU is, all the wasted filament, lots of throwing things, cussing and general disgust with the kit, why not give it to us free and take this piece of junk back?

Almost 1 year, I have very, very few successful multi color prints, yet all my single color prints come out just fine.

Hell, to get a multi color ABS print, without jamming (still jams 60% of the time), I have to lower print temps to 225, which gives me absolute shit for layer adhesion, like the prints separate while getting them off the bed.

I'll gladly pay the rice for the 2.5 upgrade, but I'm utterly disgusted Prusa is making MORE money off those of us that have fought this thing tooth and nail and pretty much forced them to take a different approach with version 2.

This should very well be a FREE upgrade for us. And they know it.

Re: Existing MMU owners discount vouchers

I feel the same. But to be realistic, we're getting the magnetic bed, Noctua and 2 filament sensors. They can't just dish that out for free. 100 bucks is still not great. We'll still be paying 200-extras=100(?) on top of what we already paid, and the original unit was marketed as ready to use. The only reason for me to even consider it at this point is the money already lost and that I'd like a magnetic bed anyway.

Re: Existing MMU owners discount vouchers

Not sure about an actual 'voucher' but when I log in and go to the Printer Upgrades section I see this:

...which I would term a 'discount'. Either way, I think this is the $100 that they are referring to.

Jerry.

Re: Existing MMU owners discount vouchers

I feel the same. But to be realistic, we're getting the magnetic bed, Noctua and 2 filament sensors. They can't just dish that out for free. 100 bucks is still not great. We'll still be paying 200-extras=100(?) on top of what we already paid, and the original unit was marketed as ready to use. The only reason for me to even consider it at this point is the money already lost and that I'd like a magnetic bed anyway.

I've already heard of people ripping the coating off the magnetic sheet, I'd rather just stick to the (thicker) PEI sheet I already have.

From the video I saw of the MMK 2.0, it's said to be self contained and has it's own board - why do we HAVE to upgrade? That irks me more, to get an actual usable product, that I paid for and waited for, I have to FIRST upgrade? Then drop MORE money? On something that should have worked?!?!?!

It's like Prusa never sat back and thought of the many of us that handed them money, hand over fist... We are second rate, the next crop of suckers is what they are focusing on.

I don't want a spring steel sheet, there's no way it's going to be durable, none. Show me any piece of coated steel that goes through heat cycles, gets bent every which way, scraped on, pulled on - that STILL has a GOOD coating on it... Cool concept, but it's not going to work in the long run. It never has.

But, that said, why can't they say - "hey, tell ya what, we'll GVE you the WORKING multi material kit *if* you upgrade", I could swallow that a lot easier. Right now, it feels like Prusa wants to make MORE money out of those of us that took a product they said worked, bought it, dealt with hours of frustration many meters of used filament, found out it's not *really* a multi MATERIAL upgrade and turned our nice, reliable printer into a piece of junk...

I'm a bit peeved about the whole situation. It's like cable companies giving discount to NEW subscribers but leaving the existing customer base holding a higher bill - only much, much worse, cause our 'cable' is constantly out.

I'm so pissed about it that it's hard to think straight thinking about it - what I DO know is that I will not hand Prusa anymore of my money after this fiasco, ever.

I got so fed up, last night I sat down and wrote a post processor that actually seems to work, so far. During the purge phase, the head lifts 5mm, cools down to a predefined min temperature (220 for Hatchbox ABS), lowers back down to the purge tower, does it's purge, retracts the filament, raises again and heats back up to the set temp (I'm using 240, because that gives me good layer adhesion), then lowers and starts the wipe. THAT is how this should have worked, not forcing the entire print to print at a lower temp, sacrificing adhesion just so materials could be swapped.

None of the temps are hard coded, *if* this print works, this should also cover different temps for different materials. I'm going to try using ABS for Nylon supports.

Nice thing is, there are no more noises coming out of my extruders, no grinding because of a jam, no popping because a small blob was getting pulled through, it's as quiet as it is with single materials - so far.

It does take a bit longer because of the time spent waiting on temps, but I'll live with that if it makes this issue go away and starts working reliably.

Re: Existing MMU owners discount vouchers

Cable companies are a good comparison 😡
You get ultrahigh speed during the trial period and maybe 3 more months, then magically it creeps down until everything stutters. Then they ignore you until the end of the subscription period, when suddenly they care so much and give you free speed upgrades (which are established by starving out some other poor suckers in their pyramid scheme). It's capitalism my friend.
Concerning the spring steel sheet, if it is stiff enough it works fairly well. I have a slightly rusty one I found on the scrap heap stuck to a corexy with high-temp Nd magnets (with cheap 1mm PEI sheet from China). Looks awful but still works after a year. I still prefer borosilicate glass though, never had any of the issues you have with PEI.
149 USD, I think I'll sit this one out. Once it really works I'll consider it, but only if the vouchers don't expire.

Re: Existing MMU owners discount vouchers

Actually, it doesn't state explicitly anywhere that we get the new heated bed with magnetic sheet? Has anyone asked support about this?
It's in the picture and technically it's not a MK2.5 without the bed, but still it makes me feel kind of uneasy. Especially since all the minor parts are listed.

Re: Existing MMU owners discount vouchers

Guys, bad news. I asked chat support and it turns out you have to buy the 2.5 upgrade first, then the MMU upgrade. Which means 105 € + 115 € in my case. Considering all the issues currently reported with the 2.5 upgrade, and that all my hotend woes won't be fixed anyway (further investment and trials of better heatbreak will be necessary), this is it for me.
I'll cut my losses here and never buy any of their products again.

Edit: They just updated the red descriptive text to make it more clear. But the name is still misleading ("from MK2 MMU to MK2.5/MK3 MMU 2.0") and the picture clearly shows a MK2s+MMU, not a MK2.5. So you basically have to throw 220€ at them to get your 280€ MMU working? To get a completely untested part with yet unseen firmware and known problems with MK2.5 and the hotend and the heated beds? And MK3 issues piling up? And the discount is limited until June? WTF PRUSA??? Frankly anyone who buys this is beyond help, this feels like a scam.

Re: Existing MMU owners discount vouchers

Actually, it doesn't state explicitly anywhere that we get the new heated bed with magnetic sheet? Has anyone asked support about this?
It's in the picture and technically it's not a MK2.5 without the bed, but still it makes me feel kind of uneasy. Especially since all the minor parts are listed.

The bed is magnetic, not the spring steel sheet. So, unless they are sending us a useless piece of spring steel (which, actually, wouldn't surprise me), the 2.5 upgrade has to come with a new bed.

It's 12 volt instead of 24 though.

Re: Existing MMU owners discount vouchers

149 USD, I think I'll sit this one out. Once it really works I'll consider it, but only if the vouchers don't expire.

Sorry to say but, from the Prusa ordering page:

"All owners of the Original Prusa i2 MK2/S and MK/2 Multi Material (those who ordered these items from our e-shop) have an exclusive option to order this upgrade until the end of June 2018 with a $100 discount. You need to be logged in to see the discounted price. "

Re: Existing MMU owners discount vouchers

What a rip off! They are making their customer pay for their poor engineering.
I wont buy any printer from Prusa until it becomes proven.
I am better off using open community developed products or DIY kits.

On a balancing note, currently my MK2S+MMU.1.0 is working fine for me.
I have little or no problems at this time (not with all the filaments though).
Multi Material printing is hugely important for me.
But I've spent huge amount of time to get it to work. Mechanics, Software , all kinds of problems were there.
At some point I've started to look for alternatives, found things like Zaribo.

I have little confidence in their engineering ability also. The MMU.1.0 saga has shown that
they can't design, build and support anything little complicated or new.
Why would it be any different with MMU.2.0?
I think there are already problems with their MMU 2.0 redesign.
They might be in the "can't design" so "re-design" loop.
They may get it "right enough", maybe eventually.

Here is my experience with MK2S and MMU 1.0. I waited for months for it
and got delivered something that has issues, which I think could have been
improved w/o a complete redesign.
It then becomes obsolete almost immediately via MK3.

Re: Existing MMU owners discount vouchers

Prusa..... Josef Prusa.... Prusa 'Research'.....

http://jmcbroom.org:8081

Watch. THAT is how your multi material upgrade SHOULD have worked. Yeah, I'm putting my printer, with *my* Gcode, out there for the world to see. I dare you to put a MK2 with the *original* MMU, printing actual MULTI MATERIALS (and not soluble materials, different freaking materials) out there for the world to see. Show us the damned thing works, or give us our money back....

*hint*, that's ABS, printing at 240 degrees, purging at 220 degrees. Because, heaven help us if we print at a temp that allows a clean retract through your dumb ass multiplexer and actually want functional parts...

I will *never* buy, or recommend, a Prusa printer again. Ever. Take you $100 voucher and shove it.

Re: Existing MMU owners discount vouchers

Yes. Calling this multiMATERIAL is a scam. If your're lucky it's multicolor, if not your printer doesn't work at all.
Why do we even need the friggin MK2.5 upgrade? It contains loads of stuff we mostly have (bondtech, fan) and we'd finally get our very own sensor disaster. Even if you'd need Pinda2 or other small parts, what prevents them sticking that into the MMU upgrade pack? The only conceivable reason is PR don't want to maintain 3 firmwares and would rather stick with MK2.5&MK3 fw variants only. Putting pressure on people by letting the vouchers expire shouts PYRAMID SCHEME all over the place. After the expiry date I'm supposed to pay 420€ to rescue my existing unit when a new one costs 300? I'm happy with my printer, I don't want another upgrade that is giving people trouble. PR sold the MMU1 as a tested and working concept. It never really did work as intended for me. Now they want money for another thing that is not even proven to work and has seen absolutely zero customer-site testing. NOBODY HAS SEEN THIS THING RUNNING. I doubt we will see it running outside a promo vid before those bloody discounts expire.

I can't speak for others, but I ordered my MK2s when I was quite sure the MMU would someday work. Then they announced the MK3, and I couldn't upgrade. This was all just HALF A YEAR AGO. Now already they want more money, in total I would have paid more than half as much as E3D are targeting for their toolhead changer system. Which I can control from GCODE without any mumbo-jumbo trial-and-error development. You can be damned sure nobody in my vicinity who ever had a beer with me will buy from this company ever again. People, sorry to say this is nothing but a massive scam.

Re: Existing MMU owners discount vouchers

The *really* crappy thing is, Prusa NEVER responds to these threads. Ever.

Anybody want to buy a piece of shit printer? I can build one, that works, cheaper than this. And yes, the only reason I bought a Prusa was the multi material option, waited, months, for the printer, then for the MMU. I damn sure wish I never knew about the MMU option.

Re: Existing MMU owners discount vouchers

I'm actually more pissed off at the army of online reviewers. Chances are not a single one of them ever commented or even hinted on all these issues, did serious testing or bought a kit anonymously. It was always about the waste tower, as if that were the biggest problem. They took the free printer, printed the pre-sliced code which mysteriously always works, and repeated the marketing statements. Of course the printers sent out to reviewers would work, but you can hardly blame the company for doing what everybody does.

I don't think they ever read or moderate this forum or even collect much feedback from customer support. Some of the posts are so offensive that any self-respecting company should censor them.
I'll just take the motors, hotend with a standard heatbreak and one set of btechs out of my kit and built yet another corexy. Still a massive waste of money and time.

Re: Existing MMU owners discount vouchers

I don't think it's terribly fair to have until the end of June to order the MMU upgrade:

- people who have MMU 1.0 and MK2S have to upgrade to MK2.5 but the shipping has at the moment a 6 months delay. I ordered mine in december. I might have it late june.

- no one has seen the MMU 2.0 actually printing stuff.

Buying the upgrade is at the moment a little bit like crowdfunding but at least on some of those site you have to show a working prototype which has not be done until now.

MMU 1.0 is working for me on my MK2S. I missed the point that upgrading to MK2.5 would require also an upgrade of MMU 1.0. In the end I decided to build a complete MK2.5 from the upgrade and parts I am currently sourcing. I might consider buying the MMU 2.0 upgrade and then source the missing parts but at the moment, without seeing anything working, I am far from decided to invest money in that upgrade.

Re: Existing MMU owners discount vouchers

I would like to see the V1 deadline re phrased to something like,

until three months after the product ships to early adopters... so there is time to get some realistic user reviews before you commit...

having said that I ordered the upgrade for the MMU, before Version2 had been announced...

maybe I am daft! who knows...

I have taken the view that Prusa have come good in the past... and MY V1 MMU is currently out of service, so I either convert back to Mk2, "upgrade" to Mk2.5 or try something else... maybe JLTX extruder... or take the V2 Upgrade....
I do like multicolour in same layer capability so if the V2 MMU works, it will get a lot of use.

regards Joan