![]() Subdivision is just when you take the faces in your model, and split them into smaller faces, which can help you create smoother shapes. Not only do quads help you make selections that would be otherwise tedious, quads subdivide really well. There are buttons for growing or shrinking rings and loops. With QuadFace Tools (Free – Donate to developer ), you don’t have to select the entire ring, you can grow or shrink your selection as you desire. You can do the same thing with faces, or any combination of selections. It’s also possible to select rings, like this: With quad modeling, you can use QuadFace Tools (Free – Donate to developer ) to select entire loops and rings very easily. (In this example, these options aren’t totally unreasonable, but in a more complex model, this might not be possible.) Loops & Rings Or, I could align my camera in a way which would allow me to drag a selection box around an entire row at once. Traditionally, in order to create the selections, I would have to orbit around my model while holding CTRL to click on each entity I want to include. I formed this model by selecting each finger loop, one at a time, and use the Move M tool and Scale S tool to get it to the size and position I wanted. The grip was modeled using a series of quads, then I used Artisan (15-day trial – $39 | Affiliate link) to subdivide and smooth the shape, to get it looking more organic. Of course, the perimeters pulled in a little bit because of this, but I just wanted to print something I could hold in my hand to get an idea of the feel of the grip. I printed these two prototypes with 0 infill, so they would print fast and save filament. I’ve been prototyping a grip for my camera that I’m modeling in SketchUp, then 3D printing, and found it as a great opportunity to use quads for all the faces in the model. Quad modeling provides predictable and continuous paths across a mesh surface in order to make subdivision and selection much easier and more predictable. (Normal people know this as an octagon, and you’d think since we call a 4-sided face a quad, that we’d call an 8-sided face an “oct”, but, that’s not really a thing. So, for instance, an 8 sided face is an N-gon, or 8-gon. They get that name just because it represents a polygon with n-number of sides. When you have 5 or more edges around a face, it’s referred to as an N-gon. (You’ll learn in a little bit why tris can be bad when creating certain types of models.) ![]() Those are called tris…… or as your 3rd-grade teacher referred to them triangles. That’s it!Īs you probably know, the minimum number of edges you need in order to generate a face in SketchUp is 3. Quads are simply faces that have EXACTLY 4 edges and 4 vertices. ![]() I thought you had to use some sort of plugin, or special tool to enter “quad modeling mode”, in order to create quads. I used to think a quad was some sort of special entity type, (sort of like how arcs and curves are reserved as special entities). ![]()
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