Way to draft half a given angle?

I am trying to build an acoustic box and want to miter the edges so
that there is a tight fit. I am having trouble with some of the
derived miter angles, as these are not nice round angles. The best way
I can think of it is if you were trying to miter the edges between a
soccer ball (as if they were all flat panels of course)
http://i13.ebayimg.com/01/i/05/87/c7/ed_2.JPG. Since the miter edge is
half of the angle between adjoining panels is there a way to add an
equation into the draft feature to simply take half of the angle
between the panels? Can someone suggest another way?

What I did was to first I create the interior volume of the box. I
then lay panels on this interior volume to create their exact size.
The panels were just simple extrusions and I used convert entities to
give the panels their shape. I just want to add the miter in as a
draft to fill in the gaps between the panels. I can email a file out
if someone doesn't mind taking a look.

Thanks.

 

Draft function is limited in the angle it works to. I recall it falls
out somewhere around 30 degrees.

Doing a cut where you relate the angle by a formula to the total
included angle/2 seems to me to be the easiest way to keep the mitre
angle "right".

Bo

 

On a sample of one, using SW07, it works to 89.991 degrees, but not at
89.992 degrees.

Jerry Steiger
Tripod Data Systems
"take the garbage out, dear"