Well I have a change of plans
its my first attempt but my fully removable backdrop has become semi permanent
Thanks to the humidity of the shed some of the board i put the greatstuff on got warped a bit. So I needed an extra piece of driftwood to pull my inset into place
As well I spotted some bigger gaps between the bottom glas plate and the inset.
Nothing he could escape through but big enough/small enough to be a pain in.
So I decided to caulk these gaps up
Now all and all the backdrop is removable but I do need a screwdriver to remove the unit
(And if the paper seal I use to keep caulk and glassplate separet does not properly work probably a pen knife).
All and all I am pleased with the general look of the thing
De back/sides are vacumable and waterproof behind their turf layer
The bottom is glass and washable