Everything you need to know about the new Prusa MK4!

Timestamps:
0:00 Intro
1:03 Load cell autoleveling
2:05 Live adjust Z?
2:28 Nextruder toolhead
3:14 Cold-swapping nozzles
3:26 Nozzle options
4:06 Why not Revo?
4:52 Stock hotend performance & modding options
6:25 Third-party nozzles (patents?)
6:37 Input shaping
7:41 Input shaping challenges on i3-style printer?
8:04 Printer performance goals
8:57 New motors (VFAs)
10:05 Additional wear from higher speeds?
11:33 New touchless user interface
12:34 New bed, compatibility to MK3
13:22 New extruder & suitability for flexibles
14:45 Filament sensor
15:40 Potential future use of the load cell
16:31 Additional sensor on toolhead
17:39 Toolhead daughter board
18:35 New mainboard
19:44 Networking features
21:11 Offline printing options
22:44 Still using TMC2130, more VFA fix details
23:56 Issue 602
24:37 MK3 upgrade options
26:20 End of life for previous machines
27:41 Multi-use firmware
28:09 SMT line tour
28:56 Pricing and product goals
30:38 Why still use printed parts?
32:23 MMU3

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[lupeters]

Their reliability is almost a problem for them. I would get a MK4, but my MK2.5 is still going strong as ever.

[YouTubsel]

And I really love their stance on priorities. Producing locally and fair, as well as keeping everything open and self testing all the parts constantly are values I really like.
I'll stick with Prusa for these soft factors alone.

I don't need one. But I really want one now. :D

[MadeWithLayers]

Thanks to everyone who submitted questions on Twitter and Mastodon!

[lisasei-leise]

It seems that Josef Prusa is quite proud that they are printing all parts on a farm made of their own printers and I really like that. He has a point here.

Edit to add: It’s just as if the tone of the replies gives away the writers opinion on the topic.

[MikeHu]

Thanks, Tom, for a fine video. Your questions were incisive as usual and have helped me make up my mind to upgrade. My Mk3 will become the support machine, still reliable after 1000's of hours work; all the upgrades are done, including Revo, but now's the time for change. Although faster prints are attractive, I still worry about the speed versus structural integrity of printed engineering parts, so I hope the Mk4 exceeds the MK3 in this field.

[jefffreeman]

I just received my MK4 and everything about it has been mind blowing. Well done, Prusa!

[henrymach]

Backwards compatibility is a good thing. There's nothing wrong with V6 style nozzles

[cidadaoPPT]

Good engineering will always be respected, even though not understood by most! I have the utmost respect for the choices done by the Prusa team. From their commitment to open-source and open hardware to their attention to backwards comparably. I never bought a Prusa, but their long track history will be the main reason why I will buy one.

[stelonous]

The MK4 was one of the fastest new-release products I've purchased. I had a feeling that this wasn't going to be a Mini launch and all the new features just solidified it for me. You can obviously tell the sheer amount of testing that went into a product.

[reinux]

Ended up going for a MK4 after months of mulling and even cancelling my Bambu preorder.
No regrets. I love that it needs so little maintenance, and that when it does, I know I'm in good hands.
Also, the kit felt like a tour through the minds of _really_ talented engineers. It was super fun.

[btcruiser]

I think Prusa is a great company that makes great 3D printers. I was fractions of a millimeter from purchasing an MK3 when I ultimately decided to go with an Voron 2.4 - not at all due to the printer's ability, but my desire to get a CoreXY system (an architectural choice as it were.) It is highly likely I will still get a Prusa printer for smaller print jobs in the future because it is just so reliable and easy to set up a print on. Great interview!

[Matthewjohnwilson]

both of my MK3s+ have over 365 days of total print time and they still power through my projects like a champ. Its really impressive how little maintenance it really needs with the amount I print. If thats an example of what Prusa can do, I am so excited to try one of the MK4 machines once I purchase one this coming year.

[JonS]

Thomas can't help but tidy up the filament that's coming off the spool after he's been moving the head! That would be me too.

[Lizard]

I really like how these guys approach the interview: They know what their machine(s) can do, even though it's (they're) in a higher price bracket than most of the competition. They've got a bunch of improvements, stability, reliability and QC going that they don't even bother bringing up... Just because they take it for granted.
They have this thing of "ask me anything, and I will give a straight answer on the fly because I'm soaked through and through with knowledge about these devices. I don't need no prep or scripting"

That kind of attitude / mentality speaks volumes!

[SierraGolfNiner]

Really great interview. Answered some questions I had that didn't seem to be clear in any of the published media to date. Personally, I'm a fan of Prusa's focus on a solid workhorse of a printer, so I'm glad they are sticking with that and not trying to get too crazy. Placed my Mk4 order after finishing this video.

[you_just]

appreciate how tom doesn’t throw prusa softball questions but is willing to disagree with him and question his decisions

[pauserratgutierrez]

Wow, I really appreciate the efforts you put in the video and the editing! Looks cool!! Keep up with all the good work Thomas!!! Wish you the best!!

[blakbuzzrd]

Thomas, just wanted to say how much I've appreciated your videos over the past year -- I purchased a Prusa MK3S+ as my first (and only) FDM printer last year, based partly on your abiding confidence in the printer (despite the many printers you have access to). I'm so glad I did. I enjoy your approach to providing rational analysis of these products, and measured recommendations where appropriate. This video was no different - you invited Prusa to engage on a variety of potentially uncomfortable questions. Keep it up!

[dprintedman]

The Mk3 is one of the best purchases I have ever made. I am very happy to see Prusa continuing to innovate at roughly the same price point!

[JohnOCFII]

Thanks for hopping in your car to quickly get us this quick look into the MK4! Much appreciated.