[UM3 pushes out bowden from feeder]

1 hour ago, anotherdayteach said:

@guillermo I'm just running into the same issue. Two questions - when you replaced everything did you use one of the thicker clips? And, did you run into a minimum length issue with the Bowden tube? I've cut mine a few times since this has been happening over the past few days and I want to make sure the tube is still workable. Thanks!

I replaced  the hole bowden tube system ( I ordered the BOWDEN PACK Ref #1696 ) with the originals blue clips. I think that one of the main reasons for this problem is a short tube. Therefore I think that cutting the tube is not a good idea. I will suggest you to change your bowden tube with a new one. I hope this may hepl you.

 

[UM3 pushes out bowden from feeder]

Hi!

I am very happy to share with you that after replacing the Bowden Tube, both tube coupling collets and both clips, the boeden tube remains inserted and has no longer been expulsed after  50 hours of continous use.

Thank you !

[UM3 pushes out bowden from feeder]

16 hours ago, esopalumpa said:

‣ Push the collet down

‣ insert the bowden and push it in with some force

‣ pull the collet up (with some force) while still pushing the bowden down

‣ insert the clip

 

The original clip is 1.4mm thick. I designed clips with 1.5 mm, 1.6 mm, 1.7 mm and 1.8 mm to increase tension on the collet if necessary.

Ultimaker-3-bowdenclip-1,4mm.stl 3.35 MB · 1 download Ultimaker-3-bowdenclip-1,5mm.stl 3.35 MB · 0 downloads Ultimaker-3-bowdenclip-1,6mm.stl 3.34 MB · 0 downloads Ultimaker-3-bowdenclip-1,7mm.stl 3.35 MB · 0 downloads Ultimaker-3-bowdenclip-1,8mm.stl 3.35 MB · 1 download

Thank you for the stl files, esopalumpa! I will try them also.

[UM3 pushes out bowden from feeder]

17 hours ago, ultiarjan said:

Just thinking out loud I would think the plastic part from the head, and also the feeder are injection molded, so they did not change. My best guess would be an issue with the small white couple thingy (with the metal teeth in it)  as it's probably an externally bought part... did you change it with one of you other printers?

 

But maybe the most likely issue is the bowden diameter being to small? did you check it? maybe swap with one of the other printers and see what happens...

 

 

Thank you for your advice. The printer with the problem is a very new one ( only   20 hours of use) and with all the original parts.  After writting my first post I cutted the bowden 5mm in the feeder side and I could print a couple of prints normally and in the third piece the bowden was pushed out again. I didn´´´ t try  yet to use the Tube coupling collet of my other UM2+. I will check this option. Instead of replacing this tube coupling collet with the one on my old UM2+ I have ordered a new tube coupling collect and I will test it to see if this  is the reason for the abnormal behavour.

The bowden tube diameter is exactly the same of the one in the other UM2+ so I do not think that this is the issue...

Thank you very much ultiarjan!

[UM3 pushes out bowden from feeder]

Hi!  I have just started having exactly the same problem in a very new UM2+ ( not more than 2 days of use/printing).

I have three UM printers:  One "old" UM2+, another  UMS3, and recently I bought another UM2+.

  In the two older printers I never suffered this problem , but in the newset UM2+  the bowden comes out from the feeder after 15 or 20 minutes of normal printing.

I have checked already everything as you also did.  

I am also very interested to find a solution  as it is a very new machine and I don´t know wich should be the reason for this issue.

I am looking forward a "materialistic" solution  as I do not believe that a  machine can modify its behavour depending on  our spiritual status as geert_2 suggests . 

[Converting 3d ultrasound images to stl/obj]

I have been dealing with this topic for some months. I am an obstetrician doing 3D ultrasound for the last 15 years. I tried with several software as 3D Slicer or Invesalius. The problem with General Electric Ultrasound machines ( the most widespread 3D ultrasound brand all around the world) is that the exported DICOM files seem to be in a propietary format that it is not standard. There are some alternatives as the DICOMatic software from Tomovision to convert the General Electric DICOM files into "standard" DICOM, but at least with the demo version of Dicomatic I was not able to obtain a readable by 3D slicer or Invesalius.

I apologize for my english ( I am from Spain)

I know that there is a solution. You can visit https://www.facebook.com/vroimpresion3d

I was involved in this project at the first steps sending my 3D volumes but , unfortunately , the project developed in a private bussiness and the software is not availabe. So I am starting again...