WORKBENCH OVERKILL, got you beat! Your's should be able to hold up aircraft parts just fine, and fine looking parts they are, you're giving me The Itch (to build again......
Before I poured my shop floor, I figured out where the permanent (as opposed to other smaller rolling work tables) bench would be, and while finishing the concrete stuck in some J bolts along the perimeter. The bench sides started as framed little walls, bolted to the J bolts, like you set a wall mud sill on a foundation wall. Then they were sheeted with 3/4" plywood, using construction adhesive and screws, after the top was shot in with a transit so it would be dead nuts flat and level. Then 2 x 6's were laid flat across the width (salvaged from an old grain mil I tore down, they'd been straight for the last 60 years, not going to warp now) and screwed/glued. I made sure to extend them a few inches past the bench sides, the overhang being a good place to use a clamp when needed. Then over the 2x6 I screwed 3/4" high density particle board, no glue though, and sealed it. this is my wearing surface, in a few more years I can lay a new layer down and start over.
I also dug a footing for my vice pole base before pouring, it goes down 20" below the floor level, 6" pipe. As it comes up through the bench it is tied into the bench structure, there is nothing I hate worse then a vice that wobbles or moves the entire bench, not mine! The entire bench is so solid, I use it as a deadman when something needs to be winched around in the shop. A full set of drawers underneath, and the shops radiant floor heat tubing NOT under it but around it. The bench is set away from the wall, not up against it, that way I can work overlarge objects on it, being able to walk 360 around it. The front and 2 sides where the drawers aren't have multiple tools etc. hanging on hooks, in view and handy so easy to find. On the wall 3' behind are shelves low down, with a pegboard up above for more visible storage. The shop's full bathroom, with washer/dryer and shower, is a few steps away. I got this done, my second time I have built up my own shop from scratch, (the first one really helped when I sold that property, as the husband was a "shop guy", turns out also retired Air Force, whose last posting was overall head guy in command of maintenance/service of our planes in Afghanistan), my new house isn't much (but paid for) but a really good shop is priceless. And it all starts with a good bench. As soon as mine was done, I started back in on my S-7S build, which was interrupted by my move a year earlier, and the satisfaction of working on that bench was great in maintaining the entire attitude of doing top notch work, the guys who build in garages on jury rigged tables or whatever but STILL turn out a quality product really have my respect. I need to cheat all I can, and have all my ducks in a row as much as possible. Crap, I want to build another airplane.....









