workbench customisation: lower shelf

After reading Paul Sellers blog about adding a lower shelf to the workbench, I decided to do it also, but a bit differently.
The two long rails are not screwed but kept in place by glued wood blocks by they own weight and by the shelf weight.
The back stop is kept in place by back blocks and dowels (pic. 3)
The two lateral stops are slotted between blocks (pic. 4)
The shelf itself is introduced laterally and kept in place by the lateral stops (pic. 5, 6 & 1).

This makes it all removable without even a screw-driver.
The shelf space extend between the legs (not on P.S. design)

The shelf board is plywood with 3 coats of boat varnish.

Please, do not pay attention to the background; my workbench is in the attic.

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn