3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or [email protected]
There are CAD communities available at: [email protected] or [email protected]
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Each brand and color are technically different. Drying PETG is very important and the cause of most issues with it. The ooze caused by moisture expansion then causes stringing, except PETG is much more sticky than other filaments. This stickiness causes more and thicker strings and wisps than other filaments. These cause more material to get pulled from the tip and they tend to ground themselves harder to whatever they come in contact with. Ultimately these effects lead to inconsistent starts and ends for your perimeter seams and it is this issue that causes ugliness, bad tolerances, and print failures. You can mitigate with drying but if you are not able to print from a dry box, you can lessen the issues by manually placing all of your seams on the inside surfaces of some prints. Indeed I only use PETG when I am designing for it in the CAD phase and I choose PETG only when I can hide the seams manually.
Yeah I'm having issues right now with material being super sticky and building up on the nozzle. after 30min of printing it has this blob of filament buildup on the nozzle which hits the print.
I do actually print from a dryer, but it has been stored in a non-sealing box for a while without silica, so maybe it's just too wet. I'm just not hearing the usual crackling of wet filament at all.
What fixed this for me was raising the z offset (as in making the nozzle further away from the bed)