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What is causing this to happen?


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Posted (edited) · What is causing this to happen?

I just switched to a new PLA filament in my ultimaker 3, and my past to prints have ended up like this.

Here is a picture

I printed this in PLA with PVA supports with a prime tower.

What is causing this, and what can I do to prevent this?

Edited by Guest
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    Posted · What is causing this to happen?

    when you say a new PLA I assume you mean a different manufacturer, I have seen this problem (with the same manufacturer) just by changing colour of PLA

    I think they are called 'artefacts' they can be reduced/eliminated by lowering the print temperature by a say five degrees which should make a big difference

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