Working with most types of stone especially stone that is hard enough to serve as a tabletop requires special tools and skills which means it s best to.
Attach granite to table base.
You might not need plywood on the entire surface just to the spots where you want to attach screws from the base.
Because your table will likely be in a location where it might be bumped or moved around occasionally you need the reliability of an adhesive with more grip than silicone can provide.
Granite not only is good for counter tops but is also handy for a table top.
How to attach a stone tabletop to a base.
Because it s difficult to clamp an assembly such as this weigh down the base with heavy objects until the adhesive has dried for 24 hours.
Usually table legs are screwed directly into the the table or into a bracket that is attached to the table top.
I don t know your design but perhaps use silicone to attach plywood strips to the bottom of your granite and then use screws to attach your table base to the plywood on the bottom of your granite.
This helps to ensure a tight bond when joining the two materials together.
Wipe the top of the table base and the area of the stone table top that you will attach to the base with a rag and acetone to remove any dirt debris or film.
Granite table tops make beautiful accent pieces.
The plywood supports the granite and gives enough clearance for the bull nose edging to clear the drawers and doors.