I'm truly getting close to having a work bench base. Today I'm cleaning up the tenons, truing the shoulders, and getting rid of all the nasty bits on the tenons and in the mortices. None of it is hard, it just takes time and attention. Once I feel every thing is ready I'll reassemble the base, make sure all the joints pull up square and the base is square and true. When I'm happy with the assembly then it is just marking the location for the draw bores on the tenons and drilling them. Then reassemble the base check everything once more and when satisfied drive the pins home.
This base will be like the last one built, no glue just draw bored. There are a lot of advantages to draw boring. A big one is assembly, there is no rush just a leisurely putting together of Tinker-Toys. Another is the joints are not super critical as there are no glue surfaces, Everything is held together mechanically and is super strong. And last if you somehow screw the pooch, you can take it apart and redo the mistake.
When the base is completed I will be able to mark the mortices on the slabs. If I could put a couple of days off in a row together the bench could be upright by next week. It ain't going to happen though, work just called and I need to fill in for someone on Saturday. Stuff happens.