Hi, I’d like to ask for some advice. I printed a large object for the first time — it covered the entire H2D print bed but was printed using a single nozzle size. I noticed that during printing, the edge of the build plate lifted a few millimeters into the air. It doesn’t bother me too much right now, but is there a way to prevent this from happening? I was printing with Bambu HF PETG.
Avoid drafts, print with a closed build chamber, less infill also helps, bed leveling before printing large objects and filament calibration is recommended.
If nothing helps, increase the temperature of the build plate and/or use adhesive.
This happens due to overcooling. What I do on large prints is turn off the chamber fan so the intake closes and no cold air gets sucked in. I also turn down the max fan speed to 30% for PETG in filament profile. Also a good idea to swap to infill to something without straight lines as those tend to warp more, gyroid works well. On large PLA prints you want to turn off the AUX fan as well.
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In addition and if all else fails a reduction in speed and/or lowering the layer height are effective anti-warping measures. They do increase print times though.