Benchwork construction, part 17

Yet another post of the "benchwork construction" saga. This time I completed the lower level with plywood boards. In the meantime, I added a new leg with gussets in the left corner to support the L metal girders correctly.
I tested the lifting system with the plywood in place and seems working rather well. The total weight of each section is growing, though. So I have to be very careful when adding new parts in order to keep the total weight at minimum.
To this end I'm not convinced to use L metal girders (actually legs for modular metal shelves) also for the upper level. Each L girder is quite heavy even if it's rigid and rather straight so I might decide to use something else as, for example, alluminium girders.

Well, that's it for now. Just few photos of the current status.

See you soon...