Arc Overhangs just became much simpler to use. The slicing algorithm by Steven McCulloch that enables the printing of overhangs without support material garnered much attention from the 3D printing community late last year. At that time, implementing the algorithm involved cloning its GitHub repo and using Python 3; which is, admittedly, a bit of an ask — especially for beginners.
Thanks to a new post-processing script for PrusaSlicer by Nicolai Wachenschwan, however, things have changed. The script, which allows the Arc Overhang algorithm to be directly integrated into PrusaSlicer, works by splitting a G-code file into layers, searching for “Bridge Infill” tags, and replacing them with the code for arc overhangs.
Setup is relatively simple, with full instructions available on the script’s GitHub page, where you can also check out a few print settings and limitations of which you should be aware before getting started. (You’ll need to print slowly, for example – and as cold as possible, with your fans on “full blast.”)
As for compatibility, it probably goes without saying that PrusaSlicer is a requirement, as is an FDM printer that is compatible with the slicing software, giving interested users a wide variety of options. To read a full write-up of the Arc Overhang post-processing script – or to download it and begin printing arc overhangs for yourself – check out the script’s GitHub page.
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License: The text of "Printing With Arc Overhangs Is Now Easier Than Ever" by All3DP is licensed under a Creative Commons Attribution 4.0 International License.