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In Rhino 4.0 Essential Training, author Dave Schultze shows how the 3D NURBS-based modeling tools in Rhino 4.0 are used to engineer products from toy robots to full-sized aircraft. This course concentrates on using Rhino 4.0 for industrial design and rapid prototyping, with a review of common 3D terminology using specific examples. Along with a comprehensive exploration of the Rhino interface, the course includes an introduction to building 3D objects with Rhino's three primary entities: the curve, the surface, and the solid. Exercise files are included with the course.
In this video, we'll cover the third of the three Solid Editing tools, Holes. Rhino has a host of tools that will let us punch holes, move holes, and delete holes. The standard hole is a circle by default, but I'll also show you how to make a hole literally any shape you can draw. First though, we'll start with a round default option. Now remember, this is a quick visualization technique. It's typically not done towards the end of a project. Let's start off by finding where the Hole commands are located. It's in the Solid menu, under Edit tools, under Holes, here is all of the commands here.
Now it's buried quite a ways so we are going to skip that, and it pop open the Holes toolbar. Now all of the toolbars in the application can be accessed, even if they are not visible, by right-clicking in a blank area here and then just scrolling down until you see the toolbar in question. I am going to click on Holes. It pops up and just select anywhere to close that back down. And this will stay open unless we dock it. Let's start by trying with some round holes and we select a target surface and note how it kind of tracks perpendicular to the surface.
Let's go and select somewhere and then right-click because you can add additional ones. So I am going to say I am done by right-clicking. Now, this is a solid command, but I had a surface there so I get kind of a weird artifact that this hole keeps going down. This next hemisphere is closed. Let's see how it works with the same example hole. Right-click. So that's the result you are after. Where it goes through both sides and is nice enclosed and clean. So, when I select this object, it's all still closed together.
So, make a few more holes on some more planar surfaces and notice this is a little bit warped, but it's still tracking perpendicular. I am going to make several holes here in a row. So, you can make multiples until you're done. They are all temporarily placed. When you finish, you are going to right-click, and then they're punched through. Now, there is also a way to reverse by using the Delete Hole.
So, let's pick one of the edges and they close back up. Now, let's make a few custom holes and get a little bit tricky. I've created this shape in the letter H. Escape to finish the last command. I am going to select this letter H, which stands for Hole, and then select the second icon and do the Make Hole. So, any surface I select, it wants to project through and I can actually change the depth here. We'll do that later, but I am just going hit Enter to go all the way through.
So, let's verify that. It looks good. Let's try a couple of other tricks. I am going to move this hole. This is the Move Hole command here and just selects one of the edges. We have to give it a point to move from so I am just going to click on that corner and move it to the side, and then we'll try something else. A little rotate the hole. So, I am going to select it same way, pick a rotation center, snapping to the endpoint.
There is the rotated hole after we've moved it. Now, let's try generating a hole that doesn't go all the way through. So, I am going to come over to this hexagon. I am going to use the Create or Make Hole command right here. I'll select the surface and this is probably best viewed on one of the side viewports. So, I am going to come over to the right and just make it go about a third of the depth. So, it's extremely handy.
It does not go all the way through. And now to finish this off, I am going to make one more hole inside of the other hole. So, I am going to start with a round hole, pick that surface there, right-click to accept, and there you go, a double hole. So, the various Hole commands allow for fast and easy creation and editing. Just make sure to create back up geometry in case you want to revert to multiple steps in the past. Remember, the Undo command does not work after you save and close Rhino.
So get in habit of saving backups internally prior to major changes.
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