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A different multi-extrusion approach - UM tool / printhead changer


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Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

@foehnsturm: Great use case! Is it more or less as flexible as a real human spine?

 

Never had a real one in my hands 8)

But I assume, at little less flexible. I'll run another print with only 2 perimeter lines instead of 3, and even lower temp.

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    Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

    Hi foehnsturm

    Where did you get the CAD template for the model come from?

    Would like to try to print.

    Thank you and greet

    Marin

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    ... https://grabcad.com/library/human-spine-1

    Geometry is not so much the challenge but using Filaflex which is one most difficult to print flexible filaments on bowden setups (and with a standard UM 2+ feeder).

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Thanks, I try my luck

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    May I ask, what type of pancake NEMA17 that is? ebay/aliexpress etc didn't show results...

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    ... https://grabcad.com/library/human-spine-1

    Geometry is not so much the challenge but using Filaflex which is one most difficult to print  flexible filaments on bowden setups (and with a standard UM 2+ feeder).

     

    Have you tried a little light oil in the Bowden tube?

    I modified Roberts guide for the feeder and I now have a small hole running through from the back, I then insert a small pipe cleaner in with a few drops of oil on it . I still get the odd bit of under extrusion from FilaFlex from Recrues but I like the filament.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    I used that trick already. But the current print was intended as challenge for the the Machtless block and Race nozzle. Just wanted to see if this one performs better with Filaflex. And so far it looks like that..

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    Posted · A different multi-extrusion approach - UM tool / printhead changer
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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Recently, we discovered a small glitch in our firmware's e-axis calculation after a tool change. So, this is the result after bug fixing.

    benchy-3-4.thumb.jpg.add25c6991fb5e0f0b8ad07038e9fd8b.jpg

    benchy-3-1.thumb.jpg.8465e67ee83961ef6c33c40e112fd238.jpg

    benchy-3-4.thumb.jpg.add25c6991fb5e0f0b8ad07038e9fd8b.jpg

    benchy-3-1.thumb.jpg.8465e67ee83961ef6c33c40e112fd238.jpg

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    Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

    That looks sexy!

    Shut-up-and-take-my-money-PORTADA-768x432.jpg

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Any release info on a kit? Looks pretty good!

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Any release info on a kit? Looks pretty good!

     

    Still under discussion ...

    Another test:

    https://ultimaker.com/en/community/prints/4900-how-small-can-we-go

    benchy-50-ontop.thumb.jpg.929de0019ca99470e464300a74390991.jpg

    benchy-50-ontop.thumb.jpg.929de0019ca99470e464300a74390991.jpg

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    Posted · A different multi-extrusion approach - UM tool / printhead changer
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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Knotted Orbit by emmet.

    GreenTec PLA and PolySupport. With 230°C this was at the lower end of PolySupport's temperature range but it looks like still a little too hot.

    knotted-orbit.thumb.jpg.4b9a32ce47ad6b0bcdde0aa4e5b617eb.jpg

    knotted-orbit.thumb.jpg.4b9a32ce47ad6b0bcdde0aa4e5b617eb.jpg

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Knotted Orbit by emmet.

    GreenTec PLA and PolySupport. With 230°C this was at the lower end of PolySupport's temperature range but it looks like still a little too hot.

    knotted-orbit.thumb.jpg.4b9a32ce47ad6b0bcdde0aa4e5b617eb.jpg

     

    Green? Looks like the black pla-tec that I use from extrudr. If it's that one, I had to change the filament size from 1.75 to 1.725 to keep a perfect top layer. Also imo it needs like 5-7C + of heat vs the same print done on faberdashery.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    It's the extrudr stuff andprinted quite well. But the support was more stringy than I expected.

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Wow, 3d printing has come on a bit since I last logged in a few months ago! Still leading the field foehnstrum i see! Great work

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    Posted (edited) · A different multi-extrusion approach - UM tool / printhead changer

    Thank you!

    Some fun with light pipes:

    lightpipe1.thumb.jpg.0cf6d7f98520347c1f378528a6aa3c47.jpg

    lightpipe1.thumb.jpg.0cf6d7f98520347c1f378528a6aa3c47.jpg

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    Posted · A different multi-extrusion approach - UM tool / printhead changer

    Woah! That's pretty cool.

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