Posts: 1125
Joined: Sun Jul 17, 2016 12:32 pm

Extruder Path To Avoid Crossing Infil Or Body Of Part

Tue Jun 11, 2019 6:24 am

Not sure what you would call this!
A setting to make the extruder follow outer perimeters of a model so as to avoid travel moves crossing the body/infill of a print.

The idea would be to help avoid collision between the nozzle and internal parts of the model such as smaller pillars the nozzle could knock over.
This can be relevant when some areas or edges of inner areas of a print may curl a tiny bit and are more prone to nozzle strikes.

Similar results as Z-Hop on retraction but some printers don't handle Z-Hop that well.

It would increase print times but maybe would be something that is selectable by layer such as temps or fan control.
Also maybe a setting to make it do this only for travel moves over a specified distance.

Posts: 51
Joined: Wed Feb 07, 2018 4:26 pm

Re: Extruder Path To Avoid Crossing Infil Or Body Of Part

Tue Jun 11, 2019 6:25 pm

I agree some printers don't handle z-hop well or are slow at moving the z axis. Cura has “avoid printed parts” which is similar to what you're requesting. I think if implemented better than Cura, with optimized paths and rounded turns, it could be an outstanding feature. Possibly adding the ability to only activate on top layer or throughout the whole print would be nice. In some cases, this feature could save time since z-hops can be lengthy.
Cura Avoid printed parts explained: https://ultimaker.com/en/resources/52507-travel

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