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Unresolved Under support finish

Discussion in 'Troubleshooting' started by TstarkEngineering, Apr 8, 2016.

  1. GAmbrosio

    GAmbrosio Active Member

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    Tstark, (Ironman?:) ) let me know what they say, this has been an irritation for me as well. For now, I either reorient the model or I fill the mess with model putty- sand then paint.


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  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    This is fixable if we know what to tweak :)
     
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  3. TstarkEngineering

    TstarkEngineering Active Member

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    Thanks, this is going to be a product sold and not a visual thing, so its important it is perfect. I probably will end up running this on my bigbox eventually anyways but trying to perfect it now on the robo.

    Tstark(ironman) well kinda...Im an engineer, who has been nicknamed ironman, because I built flying objects in school, and my name is actually T Stark, but (Tyler not Tony)
     
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  4. TstarkEngineering

    TstarkEngineering Active Member

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    exactly. Thank you for your help. Hopefully I can get this dialed in.
     
  5. GAmbrosio

    GAmbrosio Active Member

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    Isn't that the 3DP world in a nutshell?
     
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  6. TstarkEngineering

    TstarkEngineering Active Member

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    I need some unobtainium to fix this....
     
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  7. GAmbrosio

    GAmbrosio Active Member

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    Just don't be making no Ultrons because of some misguided ideologies now, 'Kay...
     
  8. TstarkEngineering

    TstarkEngineering Active Member

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    Still no luck. I feel like I've tried everything. S3d said a few things but no luck
     
  9. GAmbrosio

    GAmbrosio Active Member

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    I just reset the app and started using the virgin defaults. It is on hour 3 on a 42 hour print...:)


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  10. TstarkEngineering

    TstarkEngineering Active Member

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  11. GAmbrosio

    GAmbrosio Active Member

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    I noticed that. Printing at warp speed! I already see a problem with on the right side of the bed. I may have not spray it well with hairspray or did not wipe the glass cleaner, but it is lifting a little at that place, everything else looks amazing so far, albeit at warp speed. ;)


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  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    well, if you don't let us know what you have tried we won't know what else to suggest.

    Off the cuff I would think that perhaps the filament is a bit hot (which would make it collapse and stick to the support material much too aggressively). Or maybe no parts fan (or is this ABS)?
     
    #32 mark tomlinson, Apr 9, 2016
    Last edited: Apr 9, 2016
  13. TstarkEngineering

    TstarkEngineering Active Member

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    When I get closer to the results, I will post something. It is esun PETG. And a lower temp is what s3d suggested as well, tried it. The best result I got was increasing the distance between the dense support and the part, but the first layer is a bridge layer, and that just really screwed things up. I even tried eliminating that bridging layer.

    I will post up some settings soon of what I tried.
     
  14. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    @TstarkEngineering One thing I have determined. If you cannot bridge well you bottom surface over supports will be less smooth than you would care for it to be. I still have issues with bridging PETG. It is not the most forgiving filament to bridge with. Just something to consider.
     
  15. GAmbrosio

    GAmbrosio Active Member

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    Tyler, any luck with this? Similar problem when the first layer is a support layer. I notice that no one has responded to your post in.s3D.


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  16. TstarkEngineering

    TstarkEngineering Active Member

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    yes I went and bought 2 dual extruder machines.....and running a dissolvable material as the support. I feel there is no functional way to get this to appear nice using PETG as the support and part material. other materials yes. petg no.
     
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  17. GAmbrosio

    GAmbrosio Active Member

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    Using PLA, and I get that.


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  18. TstarkEngineering

    TstarkEngineering Active Member

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    sorry if you are having similar results and I just gave a ridiculous answer. Everyone always says PETG is easy to work with, I feel like "ya if you have easy non complex parts" its great! But for the engineering world PETG is a lot harder to get it to look good while being functional.
     
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    PET is a bit different material.
    I have not used it with supports, but I can imagine it would tend to be worse.
     
  20. TstarkEngineering

    TstarkEngineering Active Member

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    it bonds super well to itself. so if you are too close to the the layer it bonds itself, and if you are too far away it cannot bridge nicely or lay down nicely to get a nice finish. Maybe its due to the complexity of my part but here is a side view of my part (red part, green support) due to it being patent pending I cannot show the physical part but I cannot achieve a good finish under the part. I ended up trying 3 different slicers, and every setting combination you can think of with no luck. Some were better but still not a nice finish. Even matt at printed solid was struggling with similar issues.

    [​IMG]
     
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