Jump to content
Ultimaker Community of 3D Printing Experts
nmsr1196

PVA BB04 printcore; Does not extrude throughout print

Recommended Posts

I have a new UM3 and I used PVA in the #2 BB Printcore with the default settings. I did a print that was supposed to last 3 1/2 hours. The BB printcore extruded about 2-3 mm of height, PVA and then stopped extruding the material. I tried the print again, this time increased the default temperature up 10 degrees Celsius. This time it extruded about a height of 2 mm and stopped extruding. Again, both printcores are new.  Both filaments used are Ultimaker NFC. It's the Natural PVA. I did the print with the PLA only, using PLA as the support....no issues.

Any ideas?

Edited by Guest

Share this post


Link to post
Share on other sites

Just to be thorough, have you tried to do a set of hot pulls and atomic pulls? I am thinking something may have gotten stuck or burned inside.

When I first got my UM3E, it did not want to extrude until I did a cleaning. And, the BB core requires a bit more love and care than the AA core because of the nature of the PVA.

Share this post


Link to post
Share on other sites

I'm within those numbers for temperature and humidity. But, I used this as soon as I unwrapped it and that's how I got these results. So, the PVA was not laying around. After, the bed leveling and setup, I unwrapped it at that point. So, there was no time for it to develop any issue like that with such short time frame.

Share this post


Link to post
Share on other sites

hiya,

this might be your problem.

I had this problem and it was the hot pull that worked for me.

https://ultimaker.com/en/community/51107-ultimaker-3-bb-core-problem-solved-here-is-how

when you check the filament length all the way to the feeder, do you see a massive gouge where the gear has eaten into the filament?

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

  • Our picks

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 0 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

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!