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Solved How to Print a "Test" Line Before Print Starts

Discussion in 'Troubleshooting' started by jbigler1986, Feb 18, 2015.

  1. jbigler1986

    jbigler1986 Active Member

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    Hello all. Want to start off by saying you guys are extremely helpful and I thank you for that. Now my question is that I want to print a "test" line away from my actual part to make sure that my filament and nozzle are correct before it starts to actually print my part. I know I can print raft which I can then check to make sure everything looks good. I don't want to print any raft because it's a pain to remove from my clear PLA parts. Is there a setting for this in Cura? I had an UP mini before I bought my ROBO 3D (only had it for like a week before I realized the build platform was just to small) and it would print a test line before it moved on to the actual print. Any ideas? Extrudeing my PLA at 230 and bed temp at 40. Not sure if that is a reason the raft is hard to remove. My cheap PLA doesn't like any temps lower than that. It won't extrude if I go lower.
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    In most slicers you can specify an outline or perimeter layers that it draws around where the model will be.
    These are what you use for priming the nozzle, checking 1st layer height and such before the model prints.
     
  3. jbigler1986

    jbigler1986 Active Member

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    How do I do that in Cura. Still learning a lot.
     
  4. Stephen Capistron

    Stephen Capistron Active Member

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    Expert > Open Expert Settings

    Set these to a value you are happy with. If you are printing something really big you might only want 1 loop.
     

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  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Don't know, I don't use Cura, but like I said most slicers have a setting in them for outline or perimeter layers. Look for that.
     
  6. jbigler1986

    jbigler1986 Active Member

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    Let me see if I get this right. The "skirt" is the test line that will be around my part but not actually attached to it correct? Raft is a few layers under the part and a brim is a few layers attached to the part but just on the outside bottom.
     
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    yes.
     
  8. jbigler1986

    jbigler1986 Active Member

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    Awesome. Thank you very much. You guys are life savers.
     
  9. Marquis Johnson

    Marquis Johnson Active Member

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    You could also do a test line like this:

    after homing(G28), and after extruder at temp (M109), use this G-Code

    G1 F10000; SET FEEDRATE FAST
    G1 Z2; RAISE Z-AXIS TO 2MM
    G1 X20 Y20; MOVE CLOSE TO HOME
    G1 Z.1; LOWER Z-AXIS TO .1MM
    G1 F1500; SET FEEDRATE SLOW
    G1 X200 E10; CLEAR FILLAMENT
    G92 E0; ZERO EXTRUDER
    G1 F{travel_speed}; START AT TRAVEL SPEED

    This will print a line in front of the bed and the start
     
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