I am a Beta Tester of the U1. Look here to my first results. Shout out to sid naique for his great model. https://makerworld.com/de/models/90361-kingfisher-multi-material#profileId-96756
Looks great! Thanks for sharing!
How long does the disabled hotend need to heat up from idle or room temperature to working temp after picking up?
It preheats before the head is picked up. So it already at temperatur when needed.
Can you please show us a print with Petg with lot of models on the platform?
I know Snapmaker already showed a benchy, but after past experience perfecting this on my J1S, I had to see one for myself on the U1. The tiny extrusions on a multi-color benchy are very challenging.
Very pleased with how easily I got this result:
This is using the multipart model from 3dbenchy.com. Imported to Snapmaker Orca as a group at Standard (0.2 mm, fast) quality, then assigning each part to a tool/color by preference.
Minor stuff, already discussed with Snapmaker for future profiles: I did tweak one setting to relieve very fine wisps in the starboard doorway. Plus one other setting so Orca would slice the extremely thin aft name plate (must permit down to ~zero wall thickness!).
May tune further, but already impressed this didn’t come out a blobby, stringy mess. And with clean overall lines/bow at fast wall speeds.
Yo @Wombley and @GrooMakes . Whats on with your U1? Share us some impressions.
And also insights of problems. Is there any layer adhension issue or other things? I don’t print very much, but a few tests before a release should be possible for a beta tester.
@insomniac_designer , @nweolu. What are your impressions of the U1?
Tomorrow starts the Kickstarter campaign, but the Beta testers did not provide any Impression of that device. Died it at your desks?
Yep, I printed the benchy and it fell apart completely lol
Wait for reviews from the youtubers. We will be allowed to say things as soon as KS campaign goes live.
Indeed. Beta testers, not reviewers. But more coming soon…
Not allowed to say anything until the launch of the Kickstarter. Feel free to ask me questions after 10 AM EST on the 19th. Though I will say, I had fun.
i understand the need for hype and im sure the printer works great but its sorta rubs me the wrong way that theres all this encouragement to give money to the kickstarter to ‘buy’ the printer before any comprehensive reviews come out. i still want the printer, i just wish i could watch some reviews talk about the printer and show how it works so i could make a much more informed decision.
I also do not understand this. There is a Forum thread in the User Community, i can see three benchies and three other models, but no information why i should kickstart that product. Cannot understand the decision. 
My own opinion, welcome to the Kickstarter hype train… 
At the same time, I find it encouraging Snapmaker is asking people to help shake down the machine before it goes to the masses, whatever the timing.
My emotional state these past few weeks.
Take that as you will.
You are asking for a comprehensive review of a machine that is not ready to be comprehensively reviewed.
All the youtubers and other testers got the same units, that are full of things that will never see the wide spread consumer.
Now that we have more freedom, I have a plan to start a thread here, posting responses to people who requested certain things to be tested.
What fun. Personally I finally got to play with my first multi-material machine. Sadly I didn’t get to beta the U1 
but the company I work for has apparently really dug into the 3D printing I’ve done for them, so they got me a Creality K2 Plus with CFS. (tried to get them to get me a Prusa XL, and they were going to, but the shipping timeframe was longer and needed the printer sooner). Too bad the U1 was a bit out, else I might have suggested it (mainly to try to support the community).
Hopefully the U1 becomes a success. 
From what I’ve seen, Snapmaker sure has come a long way in 3D printing quality. I’ll continue to try supporting legacy users with my 2.0 collection.
100%
my 2.0 machines are not going anywhere any time soon. I do hope they will get the software/firmware part improved and not abandon.
How is K2Plus going so far? Snapmaker put out a convincing waste calc that one could youse to convince a company to get another printer
Oh the waste is horrible with default settings. I did two size 7 rings with two different colors and with the default settings, it makes a purge tower, flush purge, et. al. and I used like 1700% waste. 
However, just disabling the purge tower and setting a proper flush purge isn’t horrible it’ll always be worse than having multiple toolheads that don’t need the purge. It can be even better with proper flush into infill and get close to the multiple toolhead use. However, I’m not that skilled yet, and I’m sure it’ll require sizeable prints to have enough infill to flush. I should do more tests to see if I can almost zero out my waste (and how small of a print it takes to do so).
EDIT: I also will say, while the new bells and whistles are nice, like the auto leveling with the load cell, etc. Some times, an old style 3D printer is faster. Especially on smaller prints. I’ve had prints take more time with the printer doing all the fancy calibration and loading filament than actual printing. Whereas my old printers (like my Prusa or Sovol machines with filament already loaded) just heat and go. So there’s always a tradeoff.