Okay, guys . . . . . give me a hand with a trig problem:
I'm going to build a small stand. The base will be a tapered cone. Dimensions are 18 inches high; 8 inches diameter at the top and 12 inches diameter at the base. I'll glue up 6 tapered boards into a hexagonal cross section, chuck it into a lathe and turn it smooth.
If this were a uniform column, the boards would join at an angle of 60 degrees. The taper adds an embuggerance. Any suggestions as to how I would calculate the angles?
I've done this before, but can't remember if I used a trig solution, a graphic solution or a chart from Lahee's "Field Geology" (true dip vs apparent dip).
(My copy of Lahee got eaten up by a garage sale along with my g-pick and brunton before a move a long time ago.)
Suggestions?