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Dots of support outside model


sanderronde

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Posted · Dots of support outside model

I'm slicing a model and found that when I enable support, some weird support blobs appear outside the model. They don't seem to support anything or anything close to that so I'm wondering what they're for. Because my printer isn't the best, the blobs stick to the main print and that means I have to remove them manually even though I never wanted them on there to begin with.

 

I've attached a picture of the blobs as well as the stl file used. Just enabling support will cause them to appear. Changing the overhang angle to something big doesn't change anything. This might actually be a bug but it might also be a feature I don't know yet so I'll tag it as a question for now.

screenshot.jpg

Cable holder.stl

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    Posted · Dots of support outside model

    If you do "file" "save" in cura it creates a project file that has all your settings, your printer settings (machine settings), your STL and how you positioned the STL.  So that's more helpful than just the STL.

     

    Try playing with "support horizontal expansion" (make smaller).  Also "minimum support x/y distance" (make bigger).  If that doesn't work then post the project file please and I'll look more closely.

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    Posted · Dots of support outside model

    I don't know but you can't print it that way anyway - it will come out horrible with so little support.

     

    Rotate the part 90 degrees so the large flat area is flat on the bed.  There's a rotate tool on the left side of cura if you click on the part to rotate.

     

    Then change "support placement" to "everywhere".

    "support overhang angle" to 80

    "support horizontal expansion" to 2 (so the support reaches the build plate - otherwise it might slip off the PLA and be useless)

     

    1099813676_Screenshotfrom2020-12-2111-46-43.thumb.png.4beffc735c796862a347d9ebbf117369.png

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    Posted · Dots of support outside model

    Oh wait!  Ignore that - set support horizontal expansion to zero.  I thought you were using PVA support.  With PLA support you want the default: "support horizontal expansion" at zero.

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    Posted · Dots of support outside model

    Okay same as two posts up but set:

    support horizontal expansion to 0

    support distance priority to: X/Y overrides Z 

    support x/y distance to 3

     

    Those above 3 get rid of those dots you were talking about.

    1723337866_Screenshotfrom2020-12-2111-50-39.png.ea34d94ec4755292efff522973cdf627.png

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    Posted · Dots of support outside model

    Ah yes that seemed to have fixed it. Thanks!

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