Learn how to clean up various items that need to be deleted and copy 2D elements onto a 3D layer in preparation for modeling a welded-on assembly. Also adjust a lofted object's form using grips.
- [Instructor] Let's do some cleanup first. I'll erase this yellow line, it's no longer needed. There should be a circle on the end of this element which I can delete. And down here there's also another circle down here and if I click on that, you should see this menu appear that allows you to select different objects. If you don't see that, then turn on Selection Cycling. This is a way that you can select different elements that are on top of each other. I want to select the circle and delete it. Also, I'll turn off the center lines layer which is a 2D layer and then I can select this line and delete it also.
Next, go up to the Layers control and unisolate. Let's take a look at all the complexity down here. Obviously a lot is going on. Let's start to untangle this mess by considering this element here. It's on the triangle rear layer and it's a piece of metal that will be welded onto the end of the tube, the yellow tube above. So, let's isolate again and select this element and also select the yellow element above it.
Enter. So, now we have reduced the complexity and we can just focus in on modeling this element down below. I know I don't need these yellow lines, they're on the 3D layer but they're really two-dimensional objects, so I can just erase them. I also notice down here that the drafting isn't quite right. There's a line that goes too far.
Let's trim that off and you'll find that you can't use trim here because the XY plane is in the wrong orientation, so first, you have to say UCS, enter, enter to reset the coordinate system to world and then you can use trim and I'll press enter to select all and then I'll click on these different elements to trim them away, enter. So, as it stands, let's see what we hove. I'll just hover the cursor over this and you can see that it's a poly line.
This is also a poly line. And here we have individual pieces in arcs and lines. Let's join these pieces together. I think it'll make our life easier. I'll type J for join and we'll just go ahead and select the individual pieces that make up this shape and join them together, so now we should have a poly line there. So, now we have three different elements. Now, ultimately, this piece is going to be welded onto the end of the tube above.
So, we need to get this piece up there. I'm going to copy it up there. I'll type CO for copy and I'll copy these three elements up and I need to use ortho and move the cursor up and type 70, enter and then press enter again to end the copy commend. These are on a 2D layer, it's called TriangleRear and this is on the -TriangleRear layer, so what I want to do is move these objects to that yellow layer, so I'm going to select them and then go to Properties and change their layer assignment to -TriangleRear which is the 3D layer.
Now, if you look closely at this, you'll see that the tube doesn't seem to go quite far enough. There's a gap here. I'd like to correct that next. So, I'm going to orbit around here and I think I could turn off the red layer now, it's no longer really needed. I'll turn off TriangleRear and it's the current layer, so I can't turn off a layer that's current. I need to first go to the 3D layer, set it current, and then go back to the 2D layer and turn it off.
There we go. Now I want to link them as two somewhat, so I'll click on it and then you'll see there's a grip here and if I hover the cursor over that, you'll see the axis tripod appear. And then there are different planes that you can move this in and if you just carefully move the cursor over here, you'll see that you can highlight this plane. I'm going to click now and then it says that we're going to be potentially disassociating this and that's okay, I'll say Continue.
Then I'm going to move this over and I want to turn over Object Snap and Ortho and I also want it to look at this in the top view. And just navigate in the top view, just navigate over here and zoom in. And we want to make a very careful change here so that we don't distort the shape of this object. We just want it to be a little bit longer, we want it to go all the way down here. But we don't want to move it left or right, we want to keep it in the same general direction and just click right there.
And that will specify the new endpoint, then I can press escape to deselect. I'll just orbit and verify that I haven't messed things up. It still looks good and it's just a bit longer now. Incidentally, you can always edit lofted objects by selecting them and using any of their grips to transform their shape. And obviously this isn't something we want to do for the bicycle but I just thought I'd point it out as a possibility that you can do to your lofted objects.
So, in the next video, we'll continue modeling this bracket here and creating surfaces and solids out of it.
- Establishing a layer convention and property filters
- Extracting isolines
- Trimming and extruding surfaces
- Lofting cross sections
- 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