Revolutionary Arc Overhangs are now in PrusaSlicer*

Only 2 months after Arc Overhangs were first released do we have the first implementations in PrusaSlicer! Pleccer added a one-click solution in their SuperSlicer fork, whereas Nicolai Wachenschwan programmed a feature-rich post-processing script for your existing PrusaSlicer profiles!

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Chapters
00:00 Introduction
02:00 Arc Overhang Implementations
02:51 Sponsored Section
04:12 SuperPleccer Implementation
06:14 Nicolais Post-Processing Script
07:38 Fighting Warping with Hilbert Infill
09:29 Are Arc Overhangs the Future?

#3Dprinting #ArcOverhangs #CNCKitchen
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[swedneck]

This really shows how research doesn't have to be commercial, all you need is a community of enthusiastic people and good communication and they can produce innovation at absurd rates.

[Malusifer]

So sick! Using hilbert curves is brilliant. I freaking love open source innovation! What other products do you own that keep getting better over time?!

[bacaw]

Read on this a year ago, saw that it'll be available in Prusaslicer a week ago, and now it's finally here. Frankly, this has been one my most-awaited features to be implemented as easily accessible through any slicer for a long time now, and needless to say I'm ecstatic!

[themathnerd]

When I saw the first video on these arc based overhangs I tried to make a version of my own in Java. Instead of using arcs I expanded the already printed parts outer walls until it completely filled the overhanging part. It worked pretty well besides some strange edge cases!

[samcs]

Love seeing commercial/academic research being an inspiration to the open source community :) Excellent work from Nicolai and the rest of the team behind this! Software driven improvements are the key to moving AM on at the moment.

[stevenmcculloch]

Great update Stefan! It's great to see what the open source community can do just a few months after my initial release :) Hopefully Prusaslicer and Cura will take another look now that arc overhangs are easily accessible!

[Cal_]

I think a mix of arc overhangs and tree supports will be common in the future. Good overhangs with minimal wasted support material.

[ksevio]

Arc Overhangs look like they'd be a perfect solution for internal overhangs where there's not enough space to remove support material or the surfaces need to be cleaner than supports would allow. I've come across situations like that now and then where I had to spend a lot more time reworking a part just to make it printable that could be solved by this, even if it cost a little extra printing time

[randomviewer]

The hilbert curve thing is absolutely brilliant. I'm so glad they found a solution to this problem.
An idea I had for solving the warping was to just print the arc overhangs in a non-planar manner, with it curling downward. The next layers would print on top of it, causing it to warp upward into the shape it was originally meant to be.
Obviously this has a ton of problems, but the hilbert curve avenue makes a lot more sense.

[Devon]

Looking forward to this migrating to the main superslicer branch. I also wanna say I'm currently using your transparent printing video as a base to engineer an amount of diffusion to a translucent illuminated sign. Thanks for your very technical videos that have really informed my techniques and strategies with both design and printing.

[luketurner]

9:38 I agree. I think they should be added to the overhang-toolbox; another option to pick from, not completely replace something that's tried and true

[austgeerd]

I love how CNC Kitchen by making video about someone's concept ideas shapes the 3D printing community over the world <3.

[RegularOldDan]

Incredible how quickly this came about! This is the type of thing that make me really love open source software - passionate individuals helping to advance the state of the art for everyone, quickly. Thanks for showing these efforts!

[Bricksniper]

I'd say this would be a huge improvement for me, as I print functional parts mostly designed for 3D printability, but encounter some geometry that would make using supports inevitable. This would include counterbored holes, slight overhangs for detents, shoulders, etc. and just overall slight overhangs. This is a very big innovation in my book!

[amarissimus]

Interesting use of the Hilbert curve. I do use it for my first layer on production parts that need a perfect face. Printing with ASA or ABS on a textured bed, layer lines are completely invisible once dialed in. The paper you cited about the stress relief baked into the path is making me wonder if the effect has something to do with the way my first layers perform. I always assumed it was simply the shape itself that was disguising the tool path. Perhaps there is more to it than that. Awesome work, as usual. Thanks.

[ah-apache]

Himbert curve infill might also be interesting for materials that warp a lot like ABS :D

[sofronio.]

I can hear a ton of passion and excitement in this episode.

[GordLamb]

This will definitely be useful for replacing internal supports on engineering projects!

[jabberwocktechnologies]

Cool! It's great to see this progressing! I'm curious how similar techniques could be used to reduce infill and enable steep but not fully horizontal exterior overhangs too. Lightning infill and tree supports are excellent for my current projects, but it seems like this could cut back even more on the amount of infill and supports needed.

[ChristophLehner]

Thanks for always pushing the open source spirit and the updates on the current 3d printing news ❤