Jump to content

45° overhang problem


gudo

Recommended Posts

Posted · 45° overhang problem

Hello everyone !

all my PLA prints go well whith my UM2 Extended,

the only problem I have is about 45 ° chamfer in offset and only from the bed

All Cura parameters are OK

I vainly sought a solution to this problem

there is there anyone who has had this type of defect ?

Image1.thumb.png.6c847a544df7ec87ffb48368ac67e23e.png

Image2.thumb.png.019606556c05f17ee27d1611378a54f1.png

Image1.thumb.png.6c847a544df7ec87ffb48368ac67e23e.png

Image2.thumb.png.019606556c05f17ee27d1611378a54f1.png

  • Link to post
    Share on other sites

    Posted · 45° overhang problem

    That's because the heat of the bed. If you really need overhangs near the bed

    a) Print pla with blue tape, bed off, fans at full after layer 1.

    b) If you need the Bed on, just print like you do but set fans at 100% at layer 2. For this you need to be sure the pla it's stick like glue to the bed so the fans won't unstick it. Paper towel + window cleaner and short (microseconds) 'puff' of hair spray and clean the bed with that. The print won't come out until the bed cools down to 30C and 27C to be sure. Don't try to take it out before that or you can actually dmg the glass.

    Also of course you could just change the speed for the first 15 layers or so, and then change it again. But that would need more gcode tuning than what it's worth.

    • Like 1
    Link to post
    Share on other sites

    Posted · 45° overhang problem

    As well turn the parts 90°, so they go with the airflow. If you print 2 parts at the same time move them that they get a bigger distance it helps to get more cooling for each part. Use a bigger nozzle can helping a lot.

    • Like 1
    Link to post
    Share on other sites

    Posted · 45° overhang problem

    As well turn the parts 90°, so they go with the airflow. If you print 2 parts at the same time move them that they get a bigger distance it helps to get more cooling for each part. Use a bigger nozzle can helping a lot.

     

    Hi Freeform

    I try to turn yet and also to keep distance the problem stays

    the only time I get a good result is when I printed a circular form with the overhang chamfer

    starts on bed

    20160129_095638.thumb.png.b6dd03af150764b4d880b1f7a019a9b2.png

    20160129_095638.thumb.png.b6dd03af150764b4d880b1f7a019a9b2.png

  • Link to post
    Share on other sites

    Posted · 45° overhang problem

    What bottom layer speed do you have? Print speed?

    Nozzle temp? Bed temp?

    What height do the fans reach 100%

     

    Hi Labern

    PLA Silver gray from Form Futura & from Ultimaker

    PLA parameters :

    nozzle 0.4mm

    layer thickness 0.1mm

    first layer thickness 0.2mm

    top/bottom shell thickness 1.2mm

    nozzle temp 210°

    bed temp 60°

    first layer speed 20mm/s

    speed 50 mm/s

    fill density 30%

    fans start at 8mm high & progressively reach 100%

  • 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

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 48 replies
    ×
    ×
    • Create New...