I would like to use this false bottom in a mlt. How thick is the false bottom? How much wet grain weight can it handle?
https://www.kegland.com.au/robobrew-65l-gen3-false-bottom.html
The thickness of this false bottom was increased to a fraction under 1mm (going from memory). As a result it's still not what we would consider suitable for putting grain directly on. This particular false bottom has been designed to filter hops and the incidental piece of grain that comes out of the malt pipe. The idea of this is to protect your pump from blocking. I would say it does an excellent job of this too and it's one of the reasons why people like the BrewZilla units.
Firstly the weight of the grain can be considerable and also if you get a stuck sparge the suction generated by the pump significantly increase the pressure on the false bottom especially of this large diameter. Although the suction is not really high on the pump, this suction over such a large diameter becomes a really significant force on the false bottom, so a much thicker screen would be better for this application.
How come you don't use the actual malt pipe instead?
https://www.kegland.com.au/brewzilla-65l-replacement-malt-pipe.html