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So we've had a look at trimming and extending.

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The next thing really to move on to is the fillets and the chamfers, which can be found under this

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Modify panel.

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And if you pull down this arrow, you get fillet, chamfer and blend curves.

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So let's just have a quick run through those and see what they actually do.

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And we'll start with fill it so you can kind of see and get an idea based on just the icons here.

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Affiliate will take two lines and put a curve radius curved between them.

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A chamfer will put a 45 degree line.

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It doesn't have to be 45 degrees, but it will put a line, a straight line between them like that.

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And blend curve will take two curved lines and create a nice smooth curve between them.

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Okay, so let's look at them all in action.

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We'll start with affiliate command.

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So first I'm just going to draw a couple of lines.

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I'll make these.

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Let's make them to 50.

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Okay.

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I'll put one there and I'll put one.

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So let's say you've drawn this, okay?

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And you've got two lines like that and you decide you want these to be you want a curved corner on here.

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Okay.

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Now we've drawn this line is 250 long, so probably you might want a 50 radius.

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And again, we're working in units.

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Now, this kind of these basic lessons, we don't necessarily need to be in millimeters or inches.

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We're not creating anything real.

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So I'm just going to I'm just going to say units and that covers everything.

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Okay.

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So if that's 250 units long, then let's try a 50 unit radius curve on there and see what it looks like.

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So the way we would do that, we would go up to fill it.

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Okay.

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And it's going to ask you for two objects.

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Okay.

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If I was to just select one two, you'll see what it's actually done is it's created a right angle corner.

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And we said we wanted a 50 radius.

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Okay, well, you need to actually tell it the radius.

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But if you don't, it defaults at zero or it actually defaults to the last radius you use.

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So if it's something you've command you've done before in that drawing, it will just use the previous

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radius.

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If it's a new drawing such as this one, it will default to zero.

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But sometimes you actually want that.

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It's a good way to join two lines.

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If you wanted these to be a corner rather than kind of trying to trim, extend, trim, extend, you

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can just go fill it, okay.

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And then set the radius to zero.

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And the way you change the radius, you can see down here, as usual, we've got some options and we

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have radius.

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You can either left click radius or you can see it's got the highlighted R at the start.

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You could type in R return.

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Okay.

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But the easiest thing these days is just to click and you'll see it says specify fillet radius and this

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is the default that it's set at now.

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So if we leave that, if we so if we left it at zero.

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Okay, we can press return or right click because our mouse is set up that way.

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Now we just need to select two lines and we can select our two lines and it will do that radius for

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us there.

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Okay.

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Now, supposing we've done that and we decide we want this 50 unit radius.

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We can select radius and now we'll type in 50.

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Okay.

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And either enter or right click.

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Now, when we pick the lines again, it doesn't matter which two lines you pick which way round, but

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you'll see it gives us this nice smooth radius.

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And because we use Polylines, it's also turned it into one polyline.

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Okay, so that's a good way of doing curved corners.

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Now, supposing you wanted kind of a straight line chamfer.

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We'll have a look at that and we'll go to Chamfer and you get some options again here.

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Okay, So you need a few more.

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You need more than just a radius on this one.

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You're going to have a straight line between these two creating the corner.

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But that line.

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So you need to know what angle that line is.

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Is it 45 degrees or is it going to be?

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Start back here and be quite.

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Kind of a shallow angle.

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It's in the other way up there, so you need to tell it basically three things.

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It wants to know the angle.

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But even if it knows the angle, it doesn't know where to start.

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A 45 degree angle could be here.

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It could be here or it could be back here.

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So you also need to tell it the distance back.

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From the corner.

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If it was a right angle corner, the distance back where it will start.

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We'll have a look at those options.

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So let's look at those and let's see what it asks for.

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So we have a few options.

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We can say distance, angle, trim.

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Most of the time you'll be working with an angle, you'll know the angle.

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Okay, So if we click on Angle, it's going to say, okay, well what's the length on the first line,

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the chamfer length?

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And that basically means the, the length.

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If this is the first line, the distance back from if it were a right angle, corner will be.

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So we'll say let's go with 100.

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Okay.

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And now it will say, what's the angle from the first line?

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And we're going to put in 45.

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Okay.

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Now let's say select first line.

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Select second line.

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And that's given us a 45 degree angle.

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That and this distance here will be 100 and that will be 100.

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Now, I'm going to do that again.

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And this time I'm going to say distance 100 again.

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But now the chamfer angle from the first line, I'm going to say it's 25 degrees.

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Okay.

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So this time it now it does matter which line we pick first because.

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If I.

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If I put that line first, you'll see we get a greater angle here.

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So when I said 25 degrees, it was from.

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This first line, if that makes sense.

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If I was to do exactly the same.

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Go to angle distance 100.

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Angle 25 degrees.

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But this time I pick this as the first line.

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You get the angle in the opposite sense because it's it's taking 100 and the 25 on this line.

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Okay.

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So hopefully that makes sense.

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We're going to use these in practice.

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So will become will make more sense but that's chamfer again have a play about with it.

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Have a play with some of these you can you can set it just by distance.

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Okay but the main way you would use that is by angle and then it will ask you the distance of a first

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line.

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So have a play about with that and get used to using it.

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But next one, I'm going to do a polyline and I'm going to do an arc by pressing a let's just turn off

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or off and what I'm going to do, I'm going to drag that there, okay?

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And I'm going to copy it.

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And rotate it.

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So if you're following along with this, you don't need to be doing exactly the same as we just put

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two arcs, which would be kind of difficult to just if you want to join that end.

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To that end, it's not a simple case of just extending or anything or trimming.

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It needs quite a complex curve to do that.

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So we're going to use that as the example for this blend curves.

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Okay, we're going to click that and now it's literally just select the first curve, the next one,

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and you'll see it.

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It works out some kind of curve.

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If we undo that and have a look at our options, we get continuity.

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Okay.

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So do you want it tangential or smooth?

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That was tangential.

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That was the default.

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Let's try a smooth one.

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Pretty much the same thing.

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Okay.

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Now, if you click these, you get some options.

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So you can you can set it to fit, which will be kind of an automated smooth fit.

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Or you can have these control vertices.

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Now, control vertices will let you pick these vertices and drag them about.

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So it allows you to edit the way it's developed that curve.

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Okay.

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And it gives you a bit of control.

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So it's for blend curves command.

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Again, it's one of those hardly ever used.

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But then when you do need it, it's very useful.

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The fillet and chamfers I use a lot, especially fillet.

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Yeah, I'll do fill it.

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More of an chamfer.

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Um, but it would depend what you're doing.

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But fill.

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It's definitely use a lot for doing rounded corners.

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Yeah.

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Fill.

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So that's it.

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That's fill its chamfers and blended curves.

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And if you have a play about them maybe rewatch it.

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If you didn't quite grasp some of the options once you get used to using these, it's just second nature.

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The main thing you do is just fill it, select your radius and go ahead and do your rounded corner.

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Okay, so let's fill it and chamfers.