Subtitles of the Movie

In this drawing we're going to look at the Polar Snap and Polar Tracking Setting in AutoCAD to draw a roller shape. Now down on the status bar we have the Snap Setting here, I'm going to right click on it and go to Settings on the Shortcut Menu and at the moment, obviously the Snap is On and we need to change this Snap Type here from Grid Snap or Rectangular Snap here to Polar Snap. I'm going to specify a Polar Distance of 1 which is the default anyway. So what I've done there is that will now give me an exact increment every time I move along a Polar Tracking Line. So let's change our Polar Tracking Increment as well. We right click over Polar and go to Settings and I'm going to make sure that Polar Tracking is On and also change the increment angle there to 15 and again click on OK. So I've changed those 2 settings, I don't need O-Track on, I can switch that Off. I don't need DUCS, Dynamic UCS on either. So all we need is Snap, Polar and O-Snap for Object Snaps. All I'm going to use now is the Line Command. I click on the Line Command and what I need to make sure of is can I snap to that AutoCAD point there. I can't, that indicates that my Node Snap is Off, so I right click over O-Snap and on AutoCAD 2009 it shows me whether the Node is On or Off, its off at the moment so I click on Node and its now On so I can left click on that Node Snap. As I drag the mouse now watch the read out on the Dynamic Input. You can see there look, as I move along I'm getting an exact increment of 1 each time along the Polar Tracking Line. So if I drag along to 25 all I've got to do is left click, I do not even have to input that value. If I drag up this way at 45 degrees or a line that's 15 units long, when the read out says 15 I left click. I drag to the right again, I want 25 again along the 0 line, left click. I drag down this way now to 315 degrees, remember 0 also acts 360, hence I'm coming down from 0 line and again I want that to be 15 units long so when it reads 15 at 45 degrees I left click. I drag along to the right again now, 25, left click, its that easy. So now vertically I go upwards, I want a line at 70, left click and I'm just going to finish off the roller now using the same measurements as before. So there's 25, 15 again, notice the angles are different because I'm going in the opposite direction, I'm going this way now to the left, so that's 180 degrees and 25 units. Back out this way at 135 degrees and I want 15 and then the last one here is again 25, 180 left click. I'm going to drag down to this end point snap here now and left click again and Enter to finish. So there's my roller. That's how you utilize Polar Tracking and Polar Snap. The one thing you do need to remember though is once you've finished with Polar Snap you need to right click over snap and go to Settings, make sure your Grid Snap is back On and its using Rectangular Snap otherwise it will stay using the Polar Snap Settings. Make sure as well in your Polar Tracking that you change your increment angle back to 90 unless you need it left at 15 degrees then click on OK.