Hello,
I have to say that I am very impressed with the quality of the work being done on the flame thrower, it is a thing of beauty. I can't wait to see the finial product all assembled and installed on a gauntlet.
There has been some interest in the backplate so here is the drawing in PDF, just print it out on standard 8.5"X11" paper and it will be in scale with the flamethrower. If you have any issues with it just let me know.
http://home.comcast.net/~wizardofflight/Flame_Thrower_Backplate.pdf
Have a great day.
Alan