Last time, we left off with a completely machined tubeset, except for the seat stays. Next, we set up the jig and mock up the tubes to check all of the fits. Here is the frame in the jig with lugs installed.
What's goinig on under the lugs? Well, have a look...
Here are some pictures of the joints with the lugs and the dropouts.
I still do the seat stay miter by hand with a file. It's roughed in on a grinding wheel and finished with the file.