Jump to content

Recommended Posts

Posted · UMO Overhang Problems

I've been using my printer for some months now, and I usually refrain from printing prints that have overhang. Since I built the machine, overhang has been a problem for me. Most of the time, hanging plastic curls up. Here are a few examples of prints that have poor overhang and their print settings.

Print One: http://www.thingiverse.com/thing:202774

OfnjdgP.jpg

X0p4lkO.jpg

Print settings:

Speed: 50 mm/s

Print temp: 205 C

Layer Height: 0.1 mm

Shell thickness: 1.2 mm

Bottom/Top Thickness 1.2 mm

Fill density: 20%

Retraction speed: 40 mm/s

Retraction distance: 3 mm

Travel speed: 150 mm/s

Print two: http://www.thingiverse.com/thing:8757

SAfeyLI.jpgGBOH8su.jpgi3zdUqS.jpguFtIyl5.jpg

Print settings are same as above except:

Speed: 35 mm/s

Print temp: 195 C

The average room temperature during these prints was 75 F. Do you think the room temp would affect the print quality and/or rising of the plastic while hanging? What improvements could I make? I already have this fan shroud installed as a replacement to the stock one.

 

  • Link to post
    Share on other sites

    Posted · UMO Overhang Problems

    On the pyramid, I would wonder if you had some problems with slipping during retraction. It looks like there is some serious under extrusion going on there. Also looks like there might be some under extrusion on the top layer of the base of the pyramid.

     

  • Link to post
    Share on other sites

    Posted · UMO Overhang Problems

    Yeah, in general, it looks like you are having some sort of extrusion related problem. Even your walls without overhangs are very uneven. Maybe there is a clog developing in your nozzle? Or maybe your extruder isn't set correctly. Or maybe something is up with your Z stage.

    I would try to solve that first before fixing your overhang problem, if it even still exists when extrusion is straightened out. Improving overhangs is simple - if everything else is working fine, just add more cooling to your printer, in the form of a crossflow fan or even a desk fan.

    Sorting out the extrusion problem will require more troubleshooting, but problems with extrusion will prevent you from addressing anything else about the printer until they are solved first.

     

  • 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

      • UltiMaker Cura 5.9 stable released!
        Here comes Cura 5.9 and in this stable release we have lots of material and printer profiles for UltiMaker printers, including the newly released Sketch Sprint. Additionally, scarf seams have been introduced alongside even more print settings and improvements.  Check out the rest of this article to find out the details on all of that and more
          • Like
        • 5 replies
      • Introducing the UltiMaker Factor 4
        We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
          • Heart
          • Thanks
          • Like
        • 4 replies
    ×
    ×
    • Create New...