This course was created by Dave Schultze. We are pleased to offer this training in our library.
Note: Because this is an ongoing series, viewers will not receive a certificate of completion.
Skill Level Beginner
- [Instructor] This quiz demo is intended to test your Rhino skills in a timed scenario. I'll first give you the final form, as well as some recommended commands and strategies. Then when I say, "Go," pause the video and try to recreate what you see in 10 minutes or less. Let's zoom in on this form. Note that we have specific sizes, not too many, but this is 20 units square, and it's a height of six. Also notice we have some generous fillets here, large fillets around the outside there, but we got smaller fillets around the top edge and all of these seven holes. Since this shape is symmetrical, I'm going to recommend you work on the origin that helps also for commands that use symmetry like mirror or array. And finally, I will mention that the commands we used are square or rectangle, circles, array and filleting. Let's take a final pass around this bar of symmetrical soap. Pretty simple, not too many complicated forms here, just an interesting mix. So we'll go to all four views here by double-clicking on the perspective window and this should give you all the information you will need. So go ahead and give it your best shot and I'll check back in ten minutes or less. Okay, now that you are done, let's show how I did it and we'll compare our notes. So right off the bat, pretty much everything I need to know about this shape is visible from the front view, except for the height, so that'll be the only thing we don't see directly from the top. So we can work either on the top view or in perspective. I'm going to go ahead and turn off the final lair. Let's start with the overall form, that is the 20-by-20 square with the rounded corners. I'm going to use the command over here on the main tool bar, which is called rectangle, it also does squares. But I want to call your attention to some of the options that will make your job so much easier. I'm going to select up here, center, and then rounded. So the center of the rectangle is the origin, we can snap to that if I put on the intersection O-snap down here at the bottom, or I can just type in the number zero, return. That gets us straight on the origin. Now we can go out in all directions, that's the beauty of the center version, or I can type in specific numbers. A lot of beginners forget that Rhino lets you just kind of eyeball stuff to whatever size looks good, but at any point, virtually every command lets you type in a number. So I'm going to do that right now, the first one will be the horizontal width, type in 20 and then 20 vertical. Now, we're still in the command because we said rounded corners. So as I move around here you can see that taking shape or having some effect, all the way from a circle to a pretty sharp square. But I need to type in the radius, which is four. So I'm going to move this blue curve here and just turn that lair off. So this is the one I just drew, so not only is it centered and the right size, but I've got rounded or filleted corners already done. Next up, let's build some of these holes. So I'm going to go over to the circle command, this is made from the center and we're going to it a radius, you can snap anywhere here, I do have a construction line in place so I'm going to snap there, and then I'll type in radius equals one. Okay, there's the very first circle or instead of circle I should say future hole. Let's turn on the overall final, just take a quick peek here. So those will be punched all the way through and have nice, generous fillets. So we got to make sure these guys don't get too close, intersecting fillets can cause problems, so we want to have a little bit of space in-between. Let's turn that back off. And we do need seven of these, so I just want to make sure they don't get too close and so by putting it up here away from the edge and not too close to the center, I should be okay. We find the array command up under transform, here is array and polar, doesn't mean it's cold, it means in a circular pattern. Okay, the center of the polar array, look at the command line up here, it's telling you what it's asking for, we're going to snap there. And then we give it the number of items, so I'm going to say seven, hit ENTER and then the very last question is, is what angle do you want to fill? We're going to go all the way around 360, which looks like it's the default here so I'll just hit ENTER again. We do have a final preview, so you can add or subtract, if needed. This looks good, so I'll just hit ENTER for the final time. There's our seven holes, equally spaced, so whatever 360 divided by seven, that's the angle. Okay, let's get the overall form extruded up into space. I know that it's six tall, so we're going to select these edge curve right now. We'll go to the solid menu and extrude planar curve, straight. Now in a lot of cases you will be extruding only from one side, which we are right now, that's the default, but we'd like to make stuff centered. So we'll just switch over here on the command line, once again is both sides, now we're going in equal directions. And we have to match the number. So in this case I'm not going to type in six, I'm going to type in three, three is the amount we're going in each direction. So a little bit tricky there, just remember if you don't guess right or get it right, just CTRL + Z to undo. Okay, now we've kind of lost our circles, which we need for punching. Let's go ahead and switch to another view, maybe wireframe would work. So there's all the data inside. We're going to extrude these guys straight up just by picking them all first. I'm selecting each one and holding down SHIFT so I can get the next one in the group. So it looks like all seven. We'll use the exact same command as we did earlier, so I can can right-click on a black area up here and solid extrude, straight. So it's going nicely in both directions so that option setting still is maintained. Okay, that looks like it's well overlapping. We'll go back to shaded view, which I typically prefer, and now we're going to do a simple boolean punch operation, or difference. We find this under solid tools, and there is boolean difference. Now if you always get confused about which part to pick first, it's the part you want to keep. So we're going to select that guy there, then right-click. And then we're going to pick all of these little punch tools or cylinders, right-click, and you're done. All seven done at the exact same time, pretty cool. So to wrap this up, it looks like we'll need some fillets. We've got the outside fillet, which is the largest one already done. So now we proceed to the second pass of smaller fillets. Now my notes here are saying that the fillets are one unit, all seven holes, and also the same on the edge. So if I'm planning correctly, I may be able to grab all those edges and do 'em at the exact same time. Let's try that, so since this is a poly surface over solid we can use the solid menu for filleting. We'll go up to the solid menu, fillet edge, fillet edge. Let's check our radius, that is set to one. I'm going to see if this works, just going to draw a box around the whole thing. It looks like all those edges around the outside and each hole, top and bottom, was selected, that's good. I'll right-click for the previews and then right-click again, and we're done. We have now successfully created a bar of symmetrical soap. So the keys for this quiz demo were observing the best view for the majority of the work, which was our top view. Then we look for commands that help us make multiple copies, like the polar array. If you didn't finish the quiz in time, no worries. Take a break and try it again. Skills improve with repetition, like carving wood or juggling, 3D is no different.