The Boo Plinth and Bedroc Plinth are both machined from a Solid Board Material.
Where they differ is that the Material used to produce the Bedroc is a material that is produced for other Industries that are heavily regulated. The benefit of this being the Material the Bedroc Plinth is produced from will when being acquired to be used by the other Industries will have a Standard Attached for the Production to prove it conforms. This as the control ensures consistency across materials and for the Industry, they are assured the product does "as it states on the tin".
Adopting these materials for use in Audio, does not require a Industry Standard to be in place with a Purchase, as there is very little risk of a catastrophic failure resulting in a risk to life.
The Industry Standard for the material, means to the user of it in relation to Audio Purposes, whether it be a DIY Enthusiast or a Commercial Entity, that the material will be very very consistent as the end product being produced.
The Bedroc is a Material known outside of Audio as a Resin Impregnated Densified Wood Board, which is produced using Delignified Wood, where the Veneers are being Highly Compressed in a Heated Vacuum Chamber. The end product typically weighs approx' 1400Kg / m3.
The Boo Plinth is produced from a compressed Bamboo Board that is a not known for the Kg / m3. Typically a Bamboo with desirable properties to serve as TT Plinth Material has been shown at 900Kg / m3. Bamboo Board can be found with a compression that is producing 1100Kg / m3.
Compressed Boards in general are not able to show the same Intrinsic Damping / Dissipation Properties as does the compressed boards which are produced as a Industry Standard - Resin Impregnated Densified Wood Board.
It is the Intrinsic Damping / Dissipation Properties that is the main reasoning for the adoption of a Resin Impregnated Densified Wood Board material by both the Commercial Entities in recent years and the earliest adoption of the materials at approx' 20 years past by the DIY Enthusiast.
I can not recall seeing data produced for a 1100Kg / m3 Compressed Bamboo Board, only the 900Kg / m3 material.
In relation to experiencing Compressed Bamboo material as a Plinth, when used as the Plinth for a Garrard 401 not too long past, and the 401 TT model being one I know very well. I was quick to inform the owner of the 401 in use, the demo of the TT, was to my recollection the very best I had experienced.
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