Transcript

Hello, everyone. My name is David Arena. I work on the 3D scanning team here at GoEngineer. Today, we're going to take a quick look at a couple of ways to quickly separate a mesh into multiple ones using Geomagic Design X Pro. Sometimes when reverse engineering a part, it's easier to work on each mesh separately. Then in this case, you can trim the model CAD surfaces together to get the final CAD model. Let's take a look. So here in Design X Pro, we' have a single, uh, mesh here. You can see the way that this is modeled, there's basically three distinct areas. There's the inside here, there's kind of this outside oval shape just beyond that, and then on the outside, there's kind of this general outside shape. So we're going to break this up into three different, uh, areas. One way just to kind of show you, uh, what you might try is to go ahead and select selection tool here, and if you zoom up here, you can see that if we cut or copy this area, that the basically boundary perimeter of that new mesh is going to have this kind of, uh, staggered, uh, edge, and it's not going to be smooth. Even if we add a different selection tool to our selection, it's still going to be kind of, uh, jagged. That's because it's selecting whole triangles during this selection. So what I'm going to show here is basically a different tool to use to get a nice smooth edge on the copied or cut mesh. One of the functions I'm going to use is a 3D mesh sketch to basically ensure a smooth boundary. So once I'm in that command, I'm going to go ahead and manually draw a spline on the mesh, and I'm going to start basically at kind of where I perceive, uh, the curve, uh, change in direction on the mesh surfaces are, so it's kind of around this oval shape, uh, on one of the boundaries, and go ahead and just manually draw this. Now, I can, after the fact, also adjust the spline location by grabbing the nodes and moving them around. But in this case, I'm just going to go ahead and close it. Accept the mesh sketch and go ahead and exit out. And next, I'm going to go to the Polygons tab, where we'll find the trim tool, and we're going to trim by curve. It's the curve that we just created. I'm going to go ahead and select that curve. And on the boundary, we're basically going to rearrange the polyvertices. So I basically accept that, and I have a nice smooth boundary to work with. Here, we're going to go ahead and show you some more options. So let's look at another option. I'm going to go back to the 3D sketch, mesh sketch. Instead of drawing a spline manually, I'm going to go ahead and use this trace feature line tool. It's basically going to try to extract the high curvature area where I select. So in this case, it' actually found the whole perimeter there. I'm going to go ahead and accept that. And as I stated before, if we need to do some subtle adjustments on the spline, we can just go ahead and grab a node and kind of just drag it where we need it to be. So at this point, I'm going to go ahead and also show an- another feature here. We're going to actually offset this to the inside slightly. We don't want to pick up on the actual high point because when we go ahead and extend the mesh, it's going to kind of curve outward, and we want it to kind of be a smooth extension. So I'm going to go, go back to the Polygons tab and use the trim function again, and you can see here, we're going to keep the inside, and again, we have a nice smooth boundary to work with. Now, this will be extended and then surfaced, and then we'll go ahead from there. Let's look. at the results. So here on the left, we have the trimmed surface body that was comprised of modeling three separate meshes and then trimming them together to make one body, and then on the right, we have that thickened surface body to make a solid body. Thank you for watching this video. Bye-bye for now.