Hi Brett and thanks for the help.
See the picture below it is easy for the straight lines but getting the radii to blend in.
It would be great if i gave you the actual dimensions no doubt you could give me the code.
But i want to know how to put the radii on the corners.
I have looked and found examples and they are mainly full circles but i want the theory so i can do it myself
Thanks
Phil_H
P.S. Canon 20D EFS 17-85 using Sigma ring flash