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In the United States, the common projection style is third angle projection. In Europe, and most of the rest of the world, first angle is the norm. To change from one to the other is as simple as one Option+click, however it's important to understand what the projections look like and what the differences are. You can see here, I've got a little block with a hexagon on the right hand side. I want to go ahead and open that part up by clicking on it and say Open. And you can see what this part looks like in 3-D. You can see I have a hexagon cut through on this right hand side of the part, and I have a little triangle on the top, and I got a big hole in the center of this.
Okay, so I want to make a drawing of that. So come back over here to the drawing, and I'm going to do a couple of extra projections, so we can get a good view of what's going on here with that part. Click on the Projection, I click on a projection here, one above, and one over here on the left. And I'm going to move this around on the screen just so we can see it a little easier. And there's my drawing. Okay. Right now, I'm in third angle projection. And the way I was originally taught, third angle projection. is to think of like, a salad bowl. Think about this part here, at the bottom of the salad bowl. Now you're going to take that part and you're going to have to slide it up the side of the bowl, and you should be seeing this view here.
So that would be third angle projection. Same thing again. You're going to slide up this side of the ball over here, and you're going to see this face, as well as you're going to slide it up this way, see the triangle, and slide it up the other way. Now first angle is exactly the opposite of that. So If I flip from one to the other, if I right click and say Properties, I can change, under my Sheet Properties, from first angle to third angle, or from third angle to first angle. So click on First Angle, click OK, and notice those cutouts flipped to the other side of the part. . Did the part change? Absolutely not. It's the same exact part, just the projection style changed based upon those properties.
So, it's very important to relay what style of projection you're actually using to make sure you're getting the correct parts back. This is especially important if you're maybe working in the U.S. and you're sending parts overseas, and they're interpreting your drawings as first angle, and you're expecting them to be third angle projections. So, it's very important to specify that, so you know what you're looking for, because you'll get very different parts, depending upon the way the drawing is made. To flip back, let's go ahead and click on Properties. Let's go on to Third Angle Projection. Click OK. They flip back.
We're good to go, and we're ready to send our parts out. Even though it might not seem that important, one of the most common errors for new Saw Works drawings is using the wrong projection style and confusing vendors. It's a quick think to check and make sure that you'll be getting the correct parts the first time.
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