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maciekish

Unnecessary z-hops

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Hi,

Since the upgrade to Cura 2.7 my printer has started z-hopping during infill. It seems completely random, it will z-hop a couple times, then just turn around a couple times and then z-hop again for no apparent reason during a straight stretch of infill between to pararell walls. It's ruining my first layer and increasing the print time. Any ideas please?

Video

1.JPG?X-CloudApp-Visitor-Id=7012c06ebaf0c8f82cd538347ac50aa1

2.JPG?X-CloudApp-Visitor-Id=1391587&v=493f8552

Edited by Guest

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This is the sort of behaviour that has been driving me nuts for ages in all versions of Cura. Here is a thread I started on the topic.

https://ultimaker.com/en/community/51264-cura-27-toolpath?page=last

I would like to bring attention to this ongoing issue as I know that all users would benefit from an intensive look at the code by the Cura team.

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Cura 2.7 has issues with the Z hop function... 2.5 the Z hop worked for me... I've since just turned it off...i like the function it's a shame it's malfunctioning... but really the answer is to turn it off in 2.7

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On some materials with higher viscosity the z hop literally pulls the filament out of the hotend, especially with larger nozzle diameters. In such cases I recommend to switch off the z hop. I do this for instance with UM Nylon and get significant better results without the z hop.

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