I made a short run of custom lightweight base plates for HyperDeck Shuttle recorders and currently have a few factory seconds left available. These plates have been milled out to keep their weight down to about the same as the stock plate that comes on the hyperdeck and adds less then 0.2" to the height of the recorder.
These factory seconds are fully functional but have a few marks in the anodizing or surface finish. Offering the factory seconds for $90.
I will be throwing in a set of aluminum studs with the first couple plates. I made these as a test batch and the fit is not quite perfect, but they do snap in and lock securely.