...to be used in a spreadsheet that drives Solidworks 3d tube models. Here is a picture of my problem: http://home.comcast.net/~dennisrankin/OffsetTube.jpg What I have is: OFFSET distance RADIUS ANGLE I need to solve for LEG 2. LEG 1 and LEG 3 are paralell. Both Radii are the same. As you can see, Solidworks will solve it for me for an individual tube. I would need to open every instance of the tube in order for Solidworks to solve them all. I would rather have Excel do the numbers and drive the model. I should know this stuff. This is work related. I appreciate the help.