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Simplify3D First Layer Problem

Discussion in 'Software' started by Bobbythebrain, Jun 28, 2016.

  1. Bobbythebrain

    Bobbythebrain New Member

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    I'm having trouble getting the first layer to print properly on my Robo R1. It seems like the first layer isn't extruding enough. I get a dotted and stringy first layer.

    The Z height is fine, when it does finally extrude, it lays a perfect line. I've tried priming via additional G-Code with no luck.

    Once the first layer is printed the rest of the print is fine. This only works if I keep the dotted, stringy mess clear.

    I like all the detailed controls of S3D, but if I can't get this solved, I'll likely go back to Matter Control which works perfectly.

    I can take pics or video if that helps.
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    At what layer does it finally extrude "and is fine"?
    You might need a perimeter or skirt to get the filament flowing before it prints the model.
     
  3. Geof

    Geof Volunteer Moderator
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    I do 2 skirts and this ensures a good firat layer. If you preheat prior to printing you can always manually prime the extruder by turning the wade gear. Are you certain your z offset is correct in the start up script? To close will give you that same symptom.
     
  4. Robert Foreman

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    I don't know if this might help but here is a purge line I run before each print. I have it at the end of my starting scripts after the auto bed level.
    G1 Z5 ; lift Z by 5mm
    G1 Y0 X0 ; move to home
    G1 Z.3 ; Lift Z by .3mm
    G1 X100 E25 F300 ; purge nozzle
     
  5. Bobbythebrain

    Bobbythebrain New Member

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    I keep getting this error when I try to post: Your content can not be submitted. This is likely because your content is spam-like or contains inappropriate elements. Please change your content or try again later. If you still have problems, please contact an administrator.
     
  6. Geof

    Geof Volunteer Moderator
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    Trying to post video or pictures ?
     
  7. Bobbythebrain

    Bobbythebrain New Member

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    Thanks for the replies everyone. I had a breakthrough of sorts. I think my problem had to do with the extruder temperature being too low and a retract that happens right before it starts the skirt.

    I cranked up the temp and got much better results. I was using 205C, when I cranked it to 210C I got much better start. Now I am going to try to keep it from doing a retract at the start to see if that helps too.

    Mark, it was only taking a couple of layers to clear up. It was just that the first layer was so bad it kept pulling up what it had previously printed.

    Geoff, I'm printing a skirt as well. I started with a small one, but increased the distance to make it bigger.

    Robert, thanks for the tip. I tried something like that before without any luck. I think if i get rid of the retract at the beginning and use your purge code I might be in good shape.
     
  8. Bobbythebrain

    Bobbythebrain New Member

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    Was only posting text. Not sure what it didn't like, but it seems I'm ok now.
     
  9. Geof

    Geof Volunteer Moderator
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    Glad to hear youve got it working. I like the deprime test to.figure out what temp and settings my printer likes :)
     
    mark tomlinson likes this.
  10. Robert Foreman

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    Cool. Hope my purge code works for you. I have a lot of success with it.
     
  11. Prak Coton

    Prak Coton New Member

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    I'm having a similar problem, and I'm using TPU(flexible filament). So doing this sounds like a good idea. Did you modify the existing startup script all all or just paste this in at the end?
     
  12. Robert Foreman

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    I put this in at the end of my startup script.
     

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