Here is a couple of pics of the shopbuilt tenion jig that I use to cut the notches in the top and bottom of my ends for my frames it is quite simple to build and is adjustable, so getting the notches centered is very easy. Once you setup for the top cut make several and then setup for your bottom and do the same. After you have these done rip each to the desired width then setup your routertable and cut the relief on the sides using your fence with a stop and straight cutting bit, every relief cut will be uniform. If anyone is interested in building a tenion jig I will work up a set of drawings and instructions to build one, and I will work on getting a video of it in use in the near future. Also a pic of a foundationless topbar with demensions I use for comb guide and one of a frame end.
OK the links have been added to and earlier post. There's a couple of the shop built tenion jig, one of a topbar with combguide, and one of a finsihed end.