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DXU - Efficient Dual Extrusion Upgrade for UM2+


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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

Some recent timelapse and photos of DXU.    

Below the sample printing video with PLA+PVA after modification.      

Posted Images

Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
On 11/12/2020 at 11:21 PM, Benleo888 said:

Let me consolidate all related files and upload to Thingiverse, however, apart from those plastic parts (you can print by yourself with ABS), some metal parts also need to be modified and which may not easy for everyone, you can refer to the photos I attached below, I also upload more photos of my mod for reference.

1.jpg

2.jpg

IMG_20201113_113248.jpg

IMG_20201113_113413.jpg

IMG_20201113_113333.jpg

IMG_20201113_113352.jpg

Thank you for your design, I am trying a variation of it to keep the spring inside and not to reduce the cooling rings. please check the photos - if you modify the head bottom section to incorporate the spring adapter is even easier. let me know your comments. The drilling is easy and works great.

IMG_0940.jpg

IMG_0942.jpg

IMG_0943.jpg

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    On 12/1/2020 at 4:58 AM, Garufa said:

    Thank you for your design, I am trying a variation of it to keep the spring inside and not to reduce the cooling rings. please check the photos - if you modify the head bottom section to incorporate the spring adapter is even easier. let me know your comments. The drilling is easy and works great.

    IMG_0940.jpg

    IMG_0942.jpg

    IMG_0943.jpg

    Basically, I don't understand how your design work, but my design is try to not modify the metal parts, because they can help to hold the extruder in position and only allow it move up and down.  

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    7 hours ago, Benleo888 said:

    Basically, I don't understand how your design work, but my design is try to not modify the metal parts, because they can help to hold the extruder in position and only allow it move up and down.  

    I hope this images can explain it better, sorry for not having more details before

    IMG_0950.jpg

    IMG_0951.jpg

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+

    @Garufa, @nvcheeko, @Benleo888

    Sorry for that I repeat my question, but do all of you use 1.75mm filament?

    Where can I find Hotends for 2.85mm or is there a description to modify the hotends?

    Thanks for your help

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    4 hours ago, jtronics said:

    @Garufa, @nvcheeko, @Benleo888

    Sorry for that I repeat my question, but do all of you use 1.75mm filament?

    Where can I find Hotends for 2.85mm or is there a description to modify the hotends?

    Thanks for your help

    1.75 only in my case. option you have is to install an UM3 head and always  first pre-heat nozzle 2 on your start Gcode

    IMG_0952.jpg

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+

    Hi
    Trying to learn about this mod :)

    Are the changes to the metals parts I see mentioned in the thread needed for me to modify my UM2+ into DXU?
    Or what are they actually needed for?

    Thanks

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    On 12/7/2020 at 8:39 AM, X-Type said:

    Hi
    Trying to learn about this mod 🙂

    Are the changes to the metals parts I see mentioned in the thread needed for me to modify my UM2+ into DXU?
    Or what are they actually needed for?

    Thanks

    If you arr talking about the mod I post before, the anwser is yes, mainly the metal heatsink for second extruder.  However, for original UM2+, these extruder design with heatsink is already modify version and mainly for 1.75mm filament. 

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+

    Hi guys!

     

    I do really like this project!

    Because of this project I started building a Ultimaker 2 extended.

    But I was wondering, is there somebody out there thats is using the E3D V6 hotends? 

    I don`'t really understand the ones off ultimaker.

     

    I have orderd two of them, but I now see i need more than just that. I also need those metal plates of the printhead: Printhead parts

    Thanks!

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    On 12/21/2020 at 8:11 PM, stefan787 said:

    Hi guys!

     

    I do really like this project!

    Because of this project I started building a Ultimaker 2 extended.

    But I was wondering, is there somebody out there thats is using the E3D V6 hotends? 

    I don`'t really understand the ones off ultimaker.

     

    I have orderd two of them, but I now see i need more than just that. I also need those metal plates of the printhead: Printhead parts

    Thanks!

     

    Are there specific E3D V6 hotends for Ultimaker? 

    Is it possible to run higher temps with those? 

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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    On 7/21/2020 at 9:43 PM, alexjx said:

    I am.

    Can you please share the firmware changes for the Duet to work with the DXU? 

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    Posted (edited) · DXU - Efficient Dual Extrusion Upgrade for UM2+

    Ciao @yyh1002 I have inaccurate values in the temperature reading, it is possible to have the factory values for 24v 35w resistance and for pt100 temperature probe in order to compare them with those I have, I tried to do the PID config, the values are different between hotend 1 and hotend 2 is normal? in addition, I find that if I set the same temperature between the two hotends, the filament has a different viscosity, let me explain better, I mold with the same filament, same brand, same color, hotend 1 and 2, from hotend 1 the filament comes out beautifully fluid as it should be, while in hotend 2 less fluid comes out, but the temperatures are identical according to the display, at the moment I don't have an infrared thermometer to be able to check the real temperature.

     

     

     

     

    Edited by dadoblu_2000
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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+
    On 1/17/2021 at 7:18 PM, dadoblu_2000 said:

    from hotend 1 the filament comes out beautifully fluid as it should be, while in hotend 2 less fluid comes out, but the temperatures are identical according to the display

    Hi. Do you have identical feeders for nozzle 1 and 2? Did you check if the esteps for feeder 2 is correct?

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    Posted (edited) · DXU - Efficient Dual Extrusion Upgrade for UM2+

    Someone using DXU with Klipper?

    Edited by tomazslapsak
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    Posted · DXU - Efficient Dual Extrusion Upgrade for UM2+

    Getting Klipper to work with just the stock UM2+  is already quite the challenge. Making it work with this DXU upgrade would be challenging to say the least

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