Use boundary fill

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Use boundary fill.

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In this video, we'll use Boundary Fill to make a solid volume.

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In Fusion 360, we want to use the supplied data set Gear Reduction Housing Boundary Fill.

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We've already taken a look at adding a portion of the design that's going to hold a bearing by creating a couple extrudes and combining them together.

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And we've also done this with the Revolve.

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Now it's important to understand that when we're creating 3D parametric models, there are often times many different ways to achieve the same result.

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The method you choose is going to depend on the resources you have available,

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potentially the geometry you're working with and your familiarity with the tools.

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Because of that, I think it's important that we explore another method in this case, Boundary Fill that we can use to create the exact same geometry.

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On the back side of this housing, we have a plane and if we expand our Bodies folder, we have two surface bodies.

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We're going to use a tool from the Create menu called Boundary Fill.

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Boundary Fill allows us to use solid and surface bodies as well as work planes in order to create closed regions, cuts or intersections.

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When we select Boundary Fill, we first need to select our tools.

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For us it's going to be the back housing Body 5, Body 6 as well as this construction plane.

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Once we do that, you'll note that we get two cells available to us.

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The next thing that we need to do is move on to the Select Cells.

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If I select both of these cells, it's going to take all of the closed in regions.

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The area between those two surfaces capped off by that plane and the original back body.

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And it's going to combine them as one solid body.

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If we hide the construction planes and hide the surfaces and we hide all of the other bodies, you'll note that we have Body 7.

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Body 7 contains all of the geometry that we created using those two surfaces as well as the back housing and that new construction plane.

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This is an extremely handy tool that can be used for things like complex surfaces used to create a closed area.

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They can also be used to create things like mold core and cavities by using existing faces and surfaces to create those core and cavity geometries.

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From here it's important to play around with these tools and explore what they can do.

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But again, we're not going to be using the Boundary Fill version of this for our final.

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Make sure that we do save this before moving on to the next step.