Join Scott Onstott for an in-depth discussion in this video Welding objects together with Fillet Edge, part of 3D Surface Model Design with AutoCAD.
- View Offline
- We're going to build the stem, that is, this are here, in this video. Let's create a new layer called 3D Stem, set it current, and color it blue. Let's change the UCS to align with an object and click on this line. Now, UCS, enter, x, enter, enter, to rotate the coordinate system onto the side. Then draw a circle, and another circle, just like that.
On the surface tab, choose Extrude, and Extrude this inner circle all the way down here, like so, and then patch it, so that you have a cap on top. Actually, I think this would probably be more clear if we changed these objects to the same layer as this one over here, which is the 3D frame. I'll type p, r, change the layer to 3D Frame, escape.
That will highlight the actual stem more. It's a separate piece. In this case I'm anticipating wanting to create welds between these different elements, so I'm going to use the solid tools. Solid tools allow you to Fillet edges quite easily. So I'm going to extrude this circle down, and then I want to create another cylinder over here going in another direction, so I need to rotate the coordinate system. UCS, y, that way I can draw a circle, over here, and Extrude it, so that it dives into that object like that.
Then, Union. Use Fillet Edge, set the radius to four, and click right here, enter, enter. You have this nice-looking weld that appears between those objects. Let's move these two profiles down 22, and then Extrude both of them up 44 to keep everything symmetrical.
Then Union this piece together with this piece. Use Fillet Edge, with a radius of four, it's already set, and click right here, enter, enter. Creates another nice-looking weld. Now, this object looks very chunky out here. I'd like to round that off using Fillet Edge, but I think this time we need a slightly smaller radius, so I'll select the Radius option and type 3, enter. And then select all these edges, you'll have to orbit around while you're doing it to get all of the edges that are shown here, and then press enter, enter.
In the same style, we will Fillet these edges, but be careful not to Fillet the interior edges. That would take a little bit of bearing surface away from the grip on the handle bars. And we're gonna spin under here and get these edges, also. Enter, enter. So there you have it. This would actually be bolted on here, but I'm not going to bother detailing all that complexity. In the next video, we will create the handle bars that go through the stem.
- Creating layers for 3D modeling
- Extracting isolines
- Trimming and extending surfaces
- Extruding 2D curves into 3D surfaces
- Lofting cross sections
- Converting solids into surfaces
- Sculpting watertight surfaces into solids
- Sweeping and sculpting
- Revolving boundaries to create surfaces
- Welding objects together with Fillet Edge
- Rebuilding NURBS surfaces
- Offsetting a surface