Sorry for the late reply, haven't checked this part of the forum in a while.
I got my 9460 from a local supplier, RS Hughes, her in Socal. They do mail order and the tape is expensive (relatively). The 1/4" 9460 I have I got from a kite supply store called Hang-em High Fabrics, since closed.
If anyone wants the excel spreadsheet I used to make the cant curve, just pm me with your email address and I'll attach it.