Although cribbing is suitable for large structures, it wouldn't be practical for a piano. You would still need a hoist to lift the piano in order to place the cribbing underneath. So why not go with the hoist which is directly over the glass wall with ropes to guide the load to either side of the wall. Alternatively, some sort of boom but that would entail some beefy construction. Hopefully there is attic space so that beams can be run across the rafters to support a large eye bolt. But it's probably a vaulted ceiling. -- Regards, Jon Page
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