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PETG suggestions?

Discussion in 'Printing Filament' started by TylerJ, Feb 21, 2016.

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  1. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    You need to set a minimum print time for a layer so that as it gets to the top of those (with the fine details) it takes more time and allows them to cool. Otherwise it does what yours did.. makes a little bit of a mess with the smaller top layers.

    You can see this best on: 20160522_151128.jpg

    Those spires are melty because thy were printed so quickly that each layer did not have time to cool before the next one went down.
     
    #61 mark tomlinson, May 22, 2016
  2. RD Ghost

    RD Ghost Member

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    Do you know a good minimum time for PETG to cool. Do you have any more tips to help with the brown and burn marks.
     
    #62 RD Ghost, May 22, 2016
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    My default minimum layer times are in the ballpark of 30-60 seconds.
    That is plenty of time for the layer to cool down before another one goes over it.
    It really is only a issue on models like this where the layers get really small as it gets tall.
     
    #63 mark tomlinson, May 22, 2016
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The brown/burn marks are probably filament that bunched up around the nozzle, got burnt and fell off. That or you are extruding too hot,but usually the former

    Sent from my Xtreme Play Tab v2 using Tapatalk
     
    #64 mark tomlinson, May 22, 2016
  5. RD Ghost

    RD Ghost Member

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    How do I fix this raft in Simplify3D?
     

    Attached Files:

    #65 RD Ghost, May 25, 2016
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    PETG?
     
    #66 mark tomlinson, May 26, 2016
  7. RD Ghost

    RD Ghost Member

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    Yes I used the raft because the supports would not stick to the bed.
     
    #67 RD Ghost, May 26, 2016
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That looks like the bed is not level enough at the far end. It seems to be isolated to that corner.
    You might need to do some manual leveling.
     
    #68 mark tomlinson, May 26, 2016
  9. RD Ghost

    RD Ghost Member

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    I changed the raft to 1 layer and got this I think it's a speed/temp problem.
     

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    #69 RD Ghost, May 26, 2016
  10. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    I can get those little wisps also as a result of bridging. It works itself out by layer 3 when I am bridging infill so I usually don't try very hard to solve it. You could try increasing your extrusion temperature a few degrees to see if it flows better. Faster usually means you need more heat too, if you think it is speed related.
     
    #70 WheresWaldo, May 26, 2016
  11. RD Ghost

    RD Ghost Member

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    The problem from the first pictures is the filament sticks to the nozzle and messes up the hole print. It lays down that corner and then speeds up and starts the next layer on the same corner. Is the a way to slow down just the raft layers or have it start on the other side to give it time too cool?
     
    #71 RD Ghost, May 26, 2016
  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    https://forum.simplify3d.com/viewtopic.php?f=8&t=4571

    You might want to ask this of the Simplify3D tech support folks. From that forum post I gather there are some issues, so if they have workarounds then they are the ones to ask. Open a ticket with them.

    I almost never use a raft and haven't seen this sort of issue.
     
    #72 mark tomlinson, May 26, 2016
  13. RD Ghost

    RD Ghost Member

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    Ya I tried to posted on ther I spent $150 and thy delay my post for review by mod and that is not cool.
     
    #73 RD Ghost, May 26, 2016
  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Just like Robo... Their forum is not their support. Don't waste you time posting there if you need an answer soon (we are a better forum) :).
    Use the support page and open a ticket.


    https://www.simplify3d.com/contact-us/
     
    #74 mark tomlinson, May 26, 2016
  15. RD Ghost

    RD Ghost Member

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    The Robo forum have helped me a lot more than Robo support thy never understand my problem on the phone and email support takes days.

    I did also go to support.
     
    #75 RD Ghost, May 26, 2016
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  16. RD Ghost

    RD Ghost Member

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    Don't get me wrong in the end Robo support has help me out.
     
    #76 RD Ghost, May 26, 2016
  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Cool! The do have some sharp folks there. I usually get intelligent answers. Might take a couple of days, but if it goes longer than that ping them again.
     
    #77 mark tomlinson, May 26, 2016
  18. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yea, you have to be persistent at times wit the support groups. They often work in a multi-tiered fashion so initially your question goes to the front-line or newer folks. If you are not getting a workable answer ask that it be escalated to a second-tier support tech.
     
    #78 mark tomlinson, May 26, 2016
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  19. Geof

    Geof Volunteer Moderator
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    Tier 1- answer phone and know what a robo is or at least knowledge one exists and has a issue

    Tier 2- be able to take one apart and trouble shoot with you

    Tier 3- @mark tomlinson

    :-D
     
    #79 Geof, May 26, 2016
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  20. WADZOQUADZ

    WADZOQUADZ Member

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    I personally have never used the raft feature other then once when trying ABS. I dont see a need for it with any other filament. If supports arent sticking to the bed you should diagnose that problem before trying a raft . What are your support settings? Most of the time when i pull a print off the bed the supports stay stuck to the bed.
     
    #80 WADZOQUADZ, May 27, 2016
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