Dividing a PCD from a given starting position.

[Stanier]

Hi - Using AutoCad 2000 I want to be able to set up a pitch circle diameter showing the positions of 9 drilled holes. Using the Div command I can create the nine points on the chosen PCD but I do not appear to have any control on the start position. How can I divide my circle into the required number of points from a specified starting position?

 

Regards

[uddfl]

Quick cheat: If there are 9 holes in the pitch circle, create a 324-degree arc (360/9 * 8 ) from the desired start point, then divide that arc.

[Stanier]

Thank you for your reply. I have used the 'cheat' and it certainly provides an answer to the problem but I am surprised that there is not a means of defining the starting point when dividing a circle.

[uddfl]

Thank you for your reply. I have used the 'cheat' and it certainly provides an answer to the problem but I am surprised that there is not a means of defining the starting point when dividing a circle.

There is one other way I didn't think of before: Draw a radius line on the pitch circle to the point of the circunference where you want to start. Set the SNAPANG to the angle of that line.

 

The starting point for DIVIDE is defined by the first end point in the case of lines, plines, and arcs. But in the case of circles, since they don't have a start and an end point, the starting point for DIVIDE is defined according to the SNAPANG by AutoCAD, it seems.

[Stanier]

Many thanks for your further input. I have tried it and it works and it is a more satisfying answer to the problem.