Separation of layers in middle of print
I've had this happen a few times now, where there are layers that are almost completely detached. You can see it here with PLA. Any advice? Thanks.
RE: Separation of layers in middle of print
A few possible causes:
- Excessively high layers for your nozzle size. Ideally, you want to keep layer heights below 80% of your nozzle size. Any higher and you start to get extrusions with a circular cross-section and little squish with the layer underneath. This can result in poor inter-layer adhesion. I can't make out what layer height you're using from the pic, but it's worth verifying.
- Excessive speed. The filament needs some time to fully bond with the underlying layers. This may be accompanied by under-extrusion on long straight extrusions.
- Excessive cooling/insufficient heat. Try reducing cooling first. Increasing heat can also introduce stringing, but adding 5-10C may help.
Those are the things I usually check. If you save your part & settings off in a 3MF project file, zip it up, and attach it to a reply here, we can check other settings for possible suggestions.
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RE: Separation of layers in middle of print
@bobstro
Thanks. I will try to reduce cooling and slow the speed. I don't think it was a layer size issue, since I was doing 0.2mm layers with a 0.4mm nozzle. But to be honest with you, I also suspect the filament. I've been having other weird things happen with this filament that I haven't seen in the past.