The last photo is of my shop prior to 2015-16 re-do. Particle board paneling, vinyl windows, my Jet tablesaw and my first workbench. The others are of shop as of 2017. Better dust management, more ambient light (still an issue however) and moved a partition which made for much better use of existing space. The work benches are on rollers now and are height adjustable which really makes them multifunctional and easy on my back. I'll post an entry on me blog filling in the detail and with photos to illustrate. The long version of the story is on the website link listed. Another link https://www.pinterest.com/noctilux54/diy/ shows some of the stuff I made prior to the remodel. I'll update that soon.