Jump to content
Ultimaker Community of 3D Printing Experts
ldaponte

BB 0.4 Nozzle clogged printing PVA

Recommended Posts

I have a fairly new UM3E and the only issue I'm currently having is that printing PVA supports is not working well.  I'm only using Ultimaker filament and I've only printed from the same reel of PVA on the BB core.  After printing Benchy and a couple of other prints, the PVA printing from print core 2 - the BB 0.4 (extruder #2) that came with the printer, has stopped extruding material. The first time this happened I followed the printer cleaning directions from Ultimaker using Ultimaker cleaning filament.  I removed a lot of black carbonized gunk and was able to get the PVA to extrude a little.  On my last print I noticed that the PVA filament had broken near the extruder.  After more cleaning and no PVA extruding from the BB core I decided to post here.  I've been using the defaults in Cura, Cura is auto recognising the Ultimaker filament.  I took a look at replacement BB cores but at EUR 165 maybe I need to just replace the brass nozzle(?).  I expect something is out of adjustment because of the broken filament.  In the mean time, I'm getting good print quality out of the AA core (extruder #1) without supports.  What sort of performance should I expect with PVA and the BB core, what tweaks could I make to improve my experience with the PVA?  Are there any other cleaning techniques beyond the hot/cold pull to clean/fix my BB 0.4 core and how do I clean the nozzle?  Attaching photo of the current state of the core nozzle.  The AA core (extruder #1) nozzle looks like shinny brass - not sure why so much PVA material is collecting on the BB nozzle but I'm knew to this and probably making a rookie mistake.  Thanks.

 

Larry

 

1850704496_IMG_1622(1).thumb.jpg.bb106c8df3a10c96cb1d7a8345784b62.jpg
 

Edited by ldaponte

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Question: How do you use your 3D printer?   176 members have voted

    1. 1. - For what purpose do you 3D print?


      • Professionally, I have access to a 3D printer at work
      • Professionally, I have a 3D printer at home that generates revenue, or assists me in my work
      • Hobby, I have a 3D printer just for fun

    Please sign in or register to vote in this poll. View topic
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!