Jump to content

how improve top surface ?

Recommended Posts

Posted · how improve top surface ?

i am printing something with 50% infill

0.1 layer, 0.8 shell ,30 mm/sec and infill,50mm/sec,

wondering why the top gets so "squished"?

ok i saw that i accidently had the bottom/top thickness set to 0.5 but are there

any other points to look after to avoid this rough top surface

(already set the top surface speed to 20 mm/sec.) ???



  • Link to post
    Share on other sites

    Posted · how improve top surface ?

    This happens because the previous layers don't have enough time to cool down, so they melt.

    Two possibilities for this kind of print

    1. Enable Cool Head left in expert settings, this will make the head move away from the print a couple of seconds to let the last printed layer cool down enough.

    Downside: A lot of stringing and possible blobs because of the many movements of the head (and oozing due to the wait).

    2. Print several at once, this will let the layers cool down enough and you'll get a better finish. You can also print a small tower from the same height next to it (if you don't need more than one and don't want to loose to much filament).

    Downside: this uses more material than needed

    Keep the print temp as low as possible and increase the travel speed to 200 - 250mm/s to avoid stringing

  • Link to post
    Share on other sites

    Posted · how improve top surface ?

    hello didier

    thank you very much for the 2 solutions! since i don't have achieved any good surface results in printing many pieces at once yet, i tried the cool head option, well some stringing is occuring, but this is easier to remove than to adjust the melted top.

    i am missing the temperature option for the UM2 in cura :*(...

  • Link to post
    Share on other sites

    Posted · how improve top surface ?

    You actually can use your UM2 in a way that you set the temp in CURA. You need to change the Gcode flavour in machine setting to Reprap(marlin/sprinter) i.s.o. UltiGcode.

    This will override the UM2 firmware settings, to get the UM2 startup behaviour with the nozzle priming at start you have to add a start code in CURA, I use something like this (because of my special setup I start in the front/middle of the bed but you probably want to change that to the front left corner...)

    To be honest I don't think it's worth the trouble for regular UM2 use ... you'll probably get used to selecting material/temp in the printer.

    G28 ; home all axes

    G1 X110 Y45 F3000 ; bring extruder to the front

    G92 E0 ; zero the extruded length

    G1 Z30 ; lower

    G1 E50 F225 ; purge nozzle with 50mm of filament

    G1 X80 Y60 F3000 ; move to the side a bit

    G92 E0 ; zero the extruded length again

  • Link to post
    Share on other sites

    Posted · how improve top surface ?

    Or ignore ultiarjan and just set the temp on your UM2. You can either do it after the print starts printing in the TUNE menu or you can go to material settings on the UM2 and create a custom change, set the new temp, save it, and select PLA after choosing the save option (that's not an obvious step!).

  • Link to post
    Share on other sites

    Posted · how improve top surface ?

    hey thank you guys!!!

    well, i think its useful for me to have as much information as possible in a good working print file and i am lazy- sorry gr5 ;-)...

    ultiarjan, its a good exercise for me to learn gcoding!

    while trying to print a file from slicer i almost damaged my nozzle because it started right on the heated bed lever-so theres a serious need for me to use a proper start code- i will experiment with yours thank you for sharing !!!

  • 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
        • 4 replies
    • Create New...