Discover the step-by-step process of using the fillet command to add rounded corners to a sketch in Fusion 360. You will also learn how to create and utilize a centerline as well as the mirror command to complete a detailed scooter deck sketch.
Key Insights
- The fillet command in Fusion 360 is used to add rounded corners to a sketch. It allows you to select two lines or a point where two lines meet and input a specific radius size to create the desired roundness.
- A centerline is a specific type of line in Fusion 360 that is not considered part of the sketch. It can be created by changing a normal line to a centerline, and is typically utilized to mirror a sketch.
- The mirror command is used to create a symmetrical copy of the sketch across the centerline. Fusion 360 automatically recognizes the relationship between the original sketch and its mirrored copy, allowing changes to one side to be reflected on the other.
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Now we want to add rounded corners to our sketch, and the tool for that is called the fillet command. It's up under modify, and it's called fillet. We'll select that, and we will start by zooming into the front of our scooter sketch, and we want the front corner here to be a 20 radius.
Now I can click the dot, or I can click the two lines. Two ways to do it. I'll click the two lines first, so line A, line B, click, click, and now I type in 20, and enter.
That's a 20 millimeter radius. Now let's try the other option. I'll go back to modify, fillet.
I can click the dot, or the point where the two lines come together. I'll click one time, and it already defaulted to 20. I'll just click enter.
So 20 radius, 20 radius, the first two fillets are done. Let's zoom to the rear of the scooter deck, and right in the back we have a 100 millimeter fillet. We'll click the fillet command again, click that dot, this time type in 100, and click enter on the keyboard, and there it is, a 100 millimeter radius fillet.
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Now right here on the back we want a 20 millimeter fillet. So fillet again. We'll go back to the two line method.
I'll click this line, and that line, type in 20, and enter. Okay, we're doing really great. We need just one more fillet here.
It's right in this corner, and we want to go back to the fillet command. We'll click our first line, second line, and this one is a 10 millimeter fillet, 10, click enter. Zoom out and see the result.
Beautiful. We've got half of our scooter deck sketch. Now we need to create a special line.
It's called a center line. We'll create a normal line first. So back to create line.
Right here at the origin, I want to click precisely on the origin, move my cursor to the right exactly, and it doesn't really matter how long this line is, but I like round numbers. So let's type in 100 for 100 millimeters, and click enter. So there is a normal line there.
Right now Fusion thinks it's part of our sketch, but I will click on it one time, and then I will right click on it, and I will have an option to switch it from a normal to a center line. So I'll select that normal dash or slash center line, and I'll notice a change. It changes into a center line pattern.
It's also orange. It happens to be difficult to see because it's overlaid on a red line for the axis, but that's okay. It's a special center line.
Now we want to use the mirror command. Now nothing is selected. I can make sure by clicking escape or clicking in space.
I don't want anything selected. I want to begin the mirror command. It's on the create menu, mirror, and I have a couple of options.
The first one is the objects, and that's every line. So I will go around. I will click every line.
Now what's happening? It's already mirroring it across. That's because it already recognized that we have a mirror line. It already selected it for us, and all we have to do is select our objects.
Sometimes we have to zoom in to see everything, but we'll select the entire chain of lines all the way around including our little fillets, angled lines, and straight lines until we get back to the beginning, and we'll notice that it's creating that mirror copy all the way across the back. Let's go ahead and select it manually so we know how to do it. It says mirror line once selected.
If we click the little X there, that mirroring goes away, and we can select it by clicking the select button and then clicking our mirror line. Magically, the mirror happens. Now we just click OK and see the result.
It creates our full scooter deck, and if we did this correctly, it shades everything in our sketch into a light blue color. That lets us know it's a closed sketch without any gaps, and everything works. If it's not shaded in, you might have to go back and redo something.
You might also ask yourself, why do all of these little constraints show up? These are mirror constraints, and what that is, if we mirror across, Fusion recognizes that relationship so that if we were to change one side, it would change the other side. They're no big deal, so we'll go ahead and leave them as they are and go ahead and click the finish sketch button. Now we can go up and click the home on our viewcube, and we'll see our final result.
We have our scooter deck sketch completed.
