Hello and welcome to another CAD clip on AutoCAD 2007 talking about 3D and mostly new stuff but the one of the things people do not realize is for quite sometime now with AutoCAD solid you have been able to fill it edges between solids. This is by no means new. You have been able to this for a great deal of time since AutoCAD 2004 at least but it does not matter. We can still take advantage of that in this CAD clip so what I am talking about here is we can have a solid object and I am just using a shift middle mouse button here and we can take edges and we round those edges using the fill it command.

It works a little bit differently from the normal way we fill 2D objects but for the most part it is the same command. And what I have done here is I have taken a cylinder and a box and I have unioned them together with my bulling operations and then I have done some fill iting and using that chain option of that fill it.

So I am just going to go back to my top view over here and again I can use my visuals styles to look at that in different ways as I please. So I am going to start by just drawing a box, new objects over here. Draw a box this big and we will make it about that high. And then maybe I will draw cylinder. Cylinder here and make the cylinder a little bit higher.

Okay let us have a look and see where I put that, it looks good. If that happened to go in it the wrong place or something that ends up being up at this point just drag that down, it does not matter, all of our great 3D tools are there.

So we have a similar condition shift middle mouse button here okay. First thing I am going to do is union these together to get that edge in particular around there. So I can go in here in here and I can say union. This cylinder in this box hit enters now I have that object with that edge inside of there.

Now something you have always been able to do, I can go down here to my fill it command, normal fill it command on my tool bar and I am going to say R for radius and I am going to set it for two units, it has to be a relative number. You do not want it to be too big. You do not want it to be too small. Do a little bit to of math ahead of time and now I am going to pick on this edge for instance and I am going to say agree with my two unit radius and I am going to use the chain option C for chain and I am going to pick on these four edges and it is going to do beautiful fill it for me on those edges.

I can turn around and use the fill it command and also you can use chamfer here as well on our modify so chamfer and fill it this whole lesson works with both fill it and chamfer but fill it is a little trickier so we thought we would do this one so fill it okay. And now I am going to go in it. I am just going to pick this top edge right along the edge there and I am going to agree with my two units enter. And I am going to say C for chain and then I am going to hover over and I am going to pick this object shift middle mouse button, pick that edge hit enter and it is going to do a nice fill it around that corner.

Now sometimes if you try to do a fill it that is impossible to do if you cannot make the fill it, it will air around you okay back to where fill it or let us try chamfer instead and then I am going to pick on this edge and I am going to say enter surface selection, specified base distance so I am going to say two units, two units select an edge enter and it is going to do a chamfer instead of a fill it okay.

Over here I did a fill it in instead and we can look at this in our different visual styles once again depending on if there were materials added to it or not so we can get different options on there. Let us just spin this around working our way around here.

Maybe we want to fill at the bottom edge of this around here okay. So we are going to go back, in a 2D fill it all we do is fill it a corner in 2D but in fill it with solids, we can fill it the whole solid. So I am going to fill it off of here fill it and then I am going to pick on edge for instance bottom edge of there, I am going to accept my two unit radius. I am going to say C for chain and I am going to pick here and pick around there and hit enter and then now if I use my shift middle mouse button it filled the bottom of that quite nicely.

Shift middle mouse okay and then all you really have to do is kind of work here way around with that fill it. Sometimes you can do maybe just a single edge. Here I am just going to maybe do this vertical edge. I am going to use my fill it command, I am going to pick on that vertical edge. Sometimes you might want it to change your visual styles here except the two inch radius and I am just going to hit enter and finish that of, done.

Okay let us try it again. Maybe want to do these top two edges okay. Fill it or fillet and then I am going to pick on that edge right there and I am going to accept the two unit radius, I am going to say C for chain and pick over here and hit enter. Does the chain affect the long there and then again our visual styles, maybe I am going to take this object, change the material.

Later we will talk about materials I can go in. Pick a color whatever I want, change my visual style. We have something like that, that we can create. So practice it. Maybe have a little look in your help menu and that you can see that you can use one edge or you can use the chain edges and then just go around and kind of smooth your objects around and then you can apply your materials.

So there we have it using the cool new AutoCAD 3D solids with our fill it and our chain option within the fill it command.