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Vey interesting technique, altough I tjink the title is not exact
To me, it’s more like splitting a part (which is the standard way of handling those kind of geometries) but assembling the parts without screws or glue, directly including them in the print
You could print those inserts inPVA and disolve them after the fact though, which would actually result in a 3d-printed overhang “without support”
The other thing that bothers me is that you have to get your tolerances absolutely bang on, and babysit the print to add the various parts at each pause, but it’s a minor inconvenience
Very very cool anyway, and it gives a lot ideas about other stuff you could do using similar techniques!
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How do you split the parts in a simple way?
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In the example he has I think it’s purely by design in CAD
You have to be aware of the manufacturing process while designing the part and split your parts accordingly
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I guess I have to get off TinkerCAD then 
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The part where he pauses then prints on the inserted part, with the screw tabs that would have been overhanging, is very clever.
Great use of the pause and print method.
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I’ll have to watch this at some point, but whenever I see a video with a shock face on the preview screen it’s an immediate turn-off. I guess it works though, or content creators wouldn’t do it.
Note that you can do cut planes in lots of slicers. Even FlashPrint can do a simple, single cut plane (Though I don’t know how to do it precicely).
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They way he does it here, CAD is needed for sure, he adds locating features.
If I made a video and had my face on the thumbnail I would seriously probably have done it this way. To me it seems like him poking fun of the “shock face” thumbnail. I am not comfortable taking pictures so I usually do something dumb (like finger in the nose on the homepage).
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It certainly seems like a mocking face. I thought people figured out it was better to put Mr Beast’s face on the thumbnail though.
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He cannot be too self-conscious, no matter what reasoning is behind the thumbnail! 
my 7 year old daughter saw the thumbnail over my shoulder, and she was mighty disappointed when I showed her the vid
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Did she watch the whole thing, click like and subscribe, that is all that matters in YouTuber land 
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Not necessarily.
While it’s a lot of work, I have used TinkerCad for some quite complicated assemblies.
Create a group/folder thing and you can have many small parts and then keep a “master assembly” part with copy/paste parts put into place.
I have individual parts designed for all this whole printer. Many of them have evolved from when I did this assembly, to use fewer screws, be more rigid, or just use different hardware. At some point I stopped updating the assembly, because it’s a pain to position everything exactly, but that’s how I validated all of the various pieces as an assembly in the first place.
Now, using more robust CAD, I’ve abandonded this method, but I think that it at least proved that you can do some reasonably complicated work in TinkerCad.
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