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Unnecessary PVA support on the outside of the part


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Posted · Unnecessary PVA support on the outside of the part

Hi

I have just bought an UM3 (upgraded from UM2+), and have now finished my first print with PVA support.

Can some of you tell me why Cura makes a lot of unnecessary support on the outside of the parts, when I´m using Extruder 2 (PVA) for support print?

/Best regards KP

2.thumb.png.2038b31a11778dc3eaeefaf91d2b5844.png

1.thumb.png.34ad5a3ba6bb515faea4501e8540aa40.png

IMG_20170523_213139.thumb.jpg.3f7271498be00604fbb630373a970a26.jpg

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    Posted · Unnecessary PVA support on the outside of the part

    As an aside, I am starting to prefer the ooze shield to the priming tower. Does eat up a lot of PVA though. But, I am recycling it (PVA), so it serves other purposes for me too.

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    Posted · Unnecessary PVA support on the outside of the part

    My ooze shield is not enabled but I still get unnecessary supports on the outside of the part... This is only with PVA. If I change support back to extruder 1 which is PLA the support is only where needed.

    image.thumb.png.475f0dc8267121f847a4130f4cb4a39e.png

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    Posted · Unnecessary PVA support on the outside of the part

    Change the horizontal expansion for the extruder that is putting too much on there. Also, check the angle differences between the two extruders that are default values when using support.

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    Posted · Unnecessary PVA support on the outside of the part

    I also noticed this and reported on CURA github :

    https://github.com/Ultimaker/Cura/issues/5500

     

    Answer so far is that is it a know but hard to avoid behaviour...

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    Posted · Unnecessary PVA support on the outside of the part

    @Matioupi It's controlled by this, if you don't have it visible, search settings for it:

    image.thumb.png.81c37452b438f6497c2e226d6a48c587.png

     

    Infact, search for "horizontal expansion" to make sure you don't have the regular one set too.

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