For a glue up like this to go smoothly (which this one did) it's really important to be prepaired. Which means that no matter how many of these things you have done in the past doing a dry fit test clamp is very important. Amazing how many things you find are a problem while doing the dry fit test.
My jig is actually two sided. In the picture below I assembled the outside parts so you can see what I did. The outside parts were cut into 5 pieces to make gluing up easier.
For these glue ups to work long term there are only a few glues that will work. Epoxy is one, resorcinol is another and then the glue I used which was Weldwood plastic resin glue. What ever glue you use it has to set up in a crystal hard form which glues like Titebond do not do. And the plastic resin glue is very water resistant and easy to use.