Jump to content
Ultimaker Community of 3D Printing Experts
bakelan

Heavy Stringing with stratum vase, CURA retraction and combing question

Recommended Posts

Hi,

I am new in 3d printing.

I got some heavy stringing with one model even with lowering temperature to 190C and increasing travel speed, as shown on picture.

IMG_1169.thumb.JPG.ab18380d2fd21c3e6831c5924075d3a7.JPG

After reading about how to minimize it, i set Retraction minimum travel = 0, Enable combing = all,

Minimal extrusion before retracting = 0 and lowered print speed to 40mm/s.

I got sliced layers in CURA on attached image. Some of them are pretty clear , but a lot of them still have blue lines

getting over gaps , some even without retracting.

Is it possible to force avoiding holes like 100%, because on this model it is possible, and cleaning stringing after pretty impossible? Any suggestions?

setup cura, i3Hephestos, colorfab PLA

Thanks

VASE_slice.thumb.jpg.9f05072b522bff699393ad5b81e4ad97.jpg

IMG_1169.thumb.JPG.ab18380d2fd21c3e6831c5924075d3a7.JPG

VASE_slice.thumb.jpg.9f05072b522bff699393ad5b81e4ad97.jpg

Share this post


Link to post
Share on other sites

kkkturbo did you set the same 3 things? It's critical to make sure combing is on, and those two "minimum/minimal" settings are both at 0. This should assure retraction.

The next issue is that you are probably printing too hot. The hotter the filament is, the more like honey it is and it leaks too much. You want it closer to toothpaste so you want it cool. Some filaments won't string at all at 210C. Some filaments need to go down to 160C to stop stringing (but the extruder will normall stop moving if the temp goes below 170C so 180C is the lowest practical temperature). But if you print that cold you also have to slow things down a lot. Slowing down also helps stringing because there is less pressure in the head when it goes to retract but mostly the problem with printing too fast at colder temps is that you get heavy underextrusion making the part ugly.

I recommend printing at 200C and 0.1mm layers and 30mm/sec and if you still get stringing then try a different filament. Even the same brand but a different color will help. Usually white PLA is particularly bad at stringing.

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

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 14 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 18 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!