I’ve been doing a lot of milling and resawing lately. My prototype bookshelf will use the following pieces of yellow-poplar that I dimensioned:

Yeah, I know, it’s not too exciting, it’s just some wood.
This stuff was quite cupped when I started out, so I had to do a lot of work with the scrub plane to get it flat. To do so, I decided to put a second row of dog holes in the workbench so that it would be easier to plane across the grain:

To use them, just add some dogs in the appropriate holes, as shown here by this evil piece of beech:

It’s been working well so far. I’m considering adding one more at the corner so that it really doesn’t have any room to move around, but it’s not important right now.
Why, you ask, is that board evil? Well, it’s from a piece of 8/4 stock, about 11″ wide. To get to the point of resawing it, I had to flatten one face. No problem, except when you don’t hammer in the scrub plane wedge enough. When that happens, the blade can pop out when you’re doing hard work. The overall consequence, then, is minor carnage. Ouch. I lost a few days of shop time from that.
In any case, this board is for another project that I haven’t talked about yet. I’ll post more details on it later.