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this post was submitted on 13 Aug 2023
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Aside from drying, here are some thoughts:
Double-check the print temperature, PETG should be about 240-ish. Also the spiral vase mode may be the issue if your model isn't designed for it. Also check your z offset, the first layer should be almost a flawless sheet... if not, stop the print and try again while live adjusting the z until it's correct. Typically PETG doesn't like to be squished down as much as PLA.
Update: replaced the nozzle, heat block (heating element, sensor, PTFE) and fan duct. Did two new temp towers:
Left tower is 235 (top) to 260 (layers labeled 280-260 are all 260). Right is 220-240.
https://i.imgur.com/1MQkStE.jpg
https://i.imgur.com/HDWq19A.jpg
I definitely feel like 220 is the right temp for this.
I’ll try the bunny again, the model is designed for vase mode, so it should work!
You could also mess with your retraction settings to try and reduce stringing.