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PLA retraction settings

Discussion in 'Printing Filament' started by fredm, Nov 18, 2016.

  1. fredm

    fredm Member

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    I have been printing small lithophanes and have some stringing that adversely effects the finish piece. I am printing with pla at 210C.

    so I figure I am having problems with retraction.
    I am using mattercontrol, Looking at the settings wondering what I need to change at in what increments.

    I has hoping for some advice from more experienced forum members.
    here are my current default settings:

    length on move 3 mm
    speed 30 mm/s
    z lift .5
    min travel requiring retraction 20m
    min extrusion requiring retraction 0mm
     
    #1 fredm, Nov 18, 2016
  2. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    With PLA if you print at the lowest possible temperature you can and still retain intra-layer bonding you will minimize stringing to some extent. Most filaments, except PETG, that have a tendency to string, do so at higher extrude temps. For some reason PETG acts the opposite way.

    I don't use MC but retraction should be 3 mm or less and it looks like you are already set at 3 mm.
     
    #2 WheresWaldo, Nov 18, 2016
    Last edited: Nov 18, 2016
    Geof likes this.
  3. fredm

    fredm Member

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    Okay, thanks...so what would the lowest pla temp be?
    If i were adjust retraction,. .5mm increments?
     
    #3 fredm, Nov 19, 2016
  4. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    just try a few small prints and lower temp each time by 5° C that will show you the optimum for your particular Robo/Hotend combo.

    0.1 mm at a time
     
    #4 WheresWaldo, Nov 19, 2016
    mark tomlinson likes this.

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