On 3/4/2019 at 1:14 AM, Garufa said:Thanks for your posts, I have ordered most parts and will try to make the convertion for my UM2+ Extended. What's the difference between the two extended firmware versions ?
You can check out this post for the difference. Firmware 17.10.2 is for v1.1 update. 17.10.1 is the original.
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yyh1002
Hey guys, I would like to share a lever action dual extrusion solution I came up with for Ultimaker 2+. The approach is based on the great effort everyone put into Mark2 and Ultimaker
yyh1002
Some recent timelapse and photos of DXU.
yyh1002
Congrats on being the first to make it from overseas!(except for me;))
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alexjx 8
Interesting, I've been using DXU for a month, but didn't notice the issue mentioned here.
I recognize mark2 is a great design, and what makes other solutions like DXU possible.
However, it doesn't make sense to rule out other also good solutions.
The heat breaker that DXU uses also works well enough to handle two nozzles.
I could use a stronger fan to cool them. I'm using the 2510 variant and observed the cooldown time is much shorter than the original head. I printed regular PC in one head @ 290C, and loaded PLA in another, with an enclosure. Under this situation, the PLA in another head didn't deform enough to jam it.
As the leaking, I think Cura's standby temperature did a great job.
We are talking about modifications, there is a trade-off. The thing I believe mark2 made is space.
The extra head will take up a much larger space than what DXU takes.
I think the downside of DXU is really the source of material... It is not so easy to get as mark2.
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qwerty8224 16
GR5
I do not want to offend you, but it seems to me that you are not pursuing a good goal - to say that one is better than the other, and give an example of the testing that was. You are an adult and should understand that these are two different approaches to cooling. I will explain to inexperienced people (like you)
UM2 (which has been tested) uses cooling on one plate, that is, 1 nozzle through this plate heats the other nozzle. DXU uses a separate cooling system for each nozzle. There is a separate radiator. Such a system costs UM3 and S5, and the temperature of the first or second nozzle is not connected to each other.
I think for a full understanding, you can just say that the cooling system costs from UM3
for cooling radiators I recommend Sunon fans Gm0502PEV1
selected 1 means flow rate 1 strongly 3 weakly there is also a fan Sunon 1 cm thick but pay attention to 1 at the end.
And yes, I am very grateful to everyone who worked on the project MARK2 and DXU for the work done and the work.
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burdickjp 6
I am interested in helping with this project. I'd like to design and manufacture the heat break parts to suit both 1.75 and 2.85 mm filament. I should be able to make them compatible with Olsen and 3D Solex blocks.
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Garufa 11
Talking about sourcing of materials being difficult- Aliexpress is selling the following for UM3 and perhaps the DXU can work with it
https://www.aliexpress.com/item/-/32957845038.html
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Turbo-Power 3
Sanbrother sells parts for DXU on ali.
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superdave42 13
Awesome sauce !! I just found this thread.
As some of you have seen, I am trying to convert my UM2+ to a UM3+ sorta.
I already did Mark2 conversion and that just works great!.
however, I wanted to run the UM3 head with the cores, so I bought the head assembly and some cores, bout the Olimex board etc...
Now I see I can just use the UM2 head and ther DXU modified MK2 code to possibly get the dual extrusion working with the shift lever.
I guess what I really learned form this thread was that I don;t need the damn UM3 electronics to make the UM3 head work. sure won;t have the RGB LED function on the cores or the data etc. but it should mechanically work fine.
Cool, I may give this a shot over the weekend.
now if it was possible to get the capacitive level sensor working in the UM3 head 🙂 I need to check into that, probably possible.
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