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daveholbrook

Final layer of print?

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Not sure if this has already been mentioned but I am having big problems with the final layer of my print (especially when the print ends at a point or peak). The printer seems to over extrude at this point resulting in a lump of unwanted material.

My prints have got so much better after advice on this forum so any suggestions very welcome!

Thanks

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The issue with printing small areas is that they don't have enough time to cool down between layers. And if you use a 'minimum layer time' setting to create enough time, then you end up slowing the print down so much that the head jsut sits over the print anyway, leaking heat into the print and melting the already printed part.

If possible, you should print multiple parts at once, so that the head can be printing a layer of one part while the other one cools a bit. That could be a second copy of your object, or just a sacrificial piece like a simple tower or something to keep the head busy for a few extra seconds per layer. Alternatively, in the expert settings, Cura has a 'cool head lift' option which will move the head away for a few seconds on each pass. The head will probably ooze a bit, and end up leaving a fern-like mess growing off the side of your print, but it's usually quite easy to clean that up, and preferable to a melted print.

 

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