Brad,

The drawing on the tee shirt is just the French Compagnon Roof Framing Kernel. You've probably drawn it a 100 times. I'm assuming it's Timber Framing 101. I took it from Billy's JLC mag article and it's also in the green or red book from the timber framing guild.

http://www.raftertools.net/help/french_kernel.htm



We can get the tee shirts in red, white, blue or gray. Just need to decide on the color and tee shirt material. I had some made for my Rafter Tools app, but they sucked because of the quality of the tee shirt material. They were a one time use for me.
Here's link to pictures of the different colors of tee shirts.
http://www.roofframinggeeksquad.com/


Sim