Hi, all:

I would like to build a stained glass window using zinc Colonial came.
This came has a cross section like a double-headed arrow as illustrated
he

http://boyd.aluluei.com/came1.jpg

Where one came joins another at an angle, it's recommended that its end
be "notched" in order to accomodate the shape of the joint more
closely. In the early 20th century, artisans using this came (notably
Frank Lloyd Wright) notched the ends of their came with a cutting wheel
machine. The machine and a diagram of the joints and cuts is shown
he

http://boyd.aluluei.com/came2.jpg

This second image is copied from an excellent book on Prairie art glass
designs by Dennis Casey.

Since the device photographed in the image is no longer available, what
machine can I use to precisely cut these notches for a variety of
joining angles between 15 and 90 degrees? What machine should I obtain
to do this? (NB. This machine should not be confused with a frame
notcher, which is a punch that takes a small angular bite out of
U-shaped came for wrapping around corners)

I've heard that some stained glass workers use a modified key cutting
machine, but I have no idea what models of key cutters would be
amenable to the proper modifications. Are there any recommendations
out there along the line of this sort of solution?

Thanks!