This lesson is about the foi principle. So this is just a design method I want you to keep in mind when you're designing for a 3d printer. First we have the T, which is to represent overhangs like these, the T here, just kind of 90 degrees over here to floating. And what's going to happen is when the 3d printer goes to 3d print this, when it goes out here, it's going to start drooping. So the only way to combat this is to add support material in a external 3d slicing software of your choice. I'm not saying that you can't 3d design something with overhangs like this.

But just keep in mind if you're going to have something that is tall and has overhanging edges, then they may need support material. Next we have the H which is to represent bridging and what I mean by that is when the 3d goes through 3d print this ah here, it would come up and build the feet. And then when it gets to this point, it would actually create a 3d strand of melted filament that creates a bridge. And then the printer could continue printing this entire shape. So the H is allowed. And you just want to be clever because you can have your own internal bridging inside of your designs that help you to 3d print without the need of support material.

Next is the Oh, and this is just to represent curved arches. So circular patterns and spheres can be easily 3d printed, and they are strong and bold. And the next is the y. Now this is to represent 45 degree angles, which you'll hear a lot. So the printer would come up to here and would have no problem building up this y shape because of the 45 degree angle here. So that would be a clever way that we can add overhead To our 3d prints by just not breaking the 45 degree rule, I like to push a little further sometimes I go into 55 degrees or maybe even 60 degrees or farther, but I just wanted to keep in mind, you know, 45 degrees is that that sweet spot for support lists kind of overhangs.

So the challenge is to keep this in mind when designing for 3d printer. And this can also help you solve problems in a creative way and make really interesting design choices. Let's go ahead and jump into the next class.