Extended Rack, and Table Surface, For USB Microscope Stand

These are two minor add-ons for the excellent microscope stand designed by "octo" (thing: 2525155).

I found that the original rack didn't have enough height for some of my needs. So I took octo's rack design and extended it, so that I could get taller items under the scope.

The clip-in work table was simply (and quickly) "knocked up" for items that won't fit beneath the base, so that they can rest on top and still be accommodated beneath the lens. I had a slight hiccup when designing it, as it was supposed to exactly match the curves of the existing base. But somehow I managed to squash the design in the Y axis. When I tried to resize it, it wouldn't fit!

But, it turns out that it fits and functions perfectly well as it is, so I didn't see the need to invest any more time into it! If I ever do, you'll read about it here.

Full praise, from me, to octo's design: It's almost perfect for my needs (once I had extended the rack), and was far less complicated than some others on h