Albert Porters after market panzerholz plinths

Wonder if you can cut it with a waterjet, a la slate.
For comparison, a slab of Pennsylvania slate that is 12 inches square (one square foot) and one inch thick weighs 15 lbs. (Slate from other sources can be more or less dense. For example, Vermont slate, from northern VT, is more dense.) So, a slab of PA slate that is 7 ft long by 39" wide (lets say 3 ft, so I don't have to use a calculator) by one inch thick would weigh 315 lbs. By no means do I mean this (the fact that slate is more dense) to infer that slate is "better" than Panzerholz for plinth-building, because in fact I am coming to believe that a combination of these and/or similar materials might be optimal. And it's quite possible that Panzerholz is superior to slate; I haven't tried it. To be honest, the foregoing information about the difficulties of obtaining and working with Panzerholz just shows the wisdom of ordering a finished plinth from Albert.

Lewm being a wood base product I think using a waterjet cutter would adversely effect it. BKB did send me via email a product information form outlining specific use of carbide cutting tools,polyurathane adhesives only to be used and to seal the product against moisture, swings in temperature and humidity ect once all cutting is completed

I also thought about a constrained layer plinth using soft slate and panzerholz and yes I agree the panzerplywood would not be easy to obtain and in the end may prove too much for the typical DIY to work with, Mr.Porters plinths look to be a good alternative his pricing for material cost labour intensive job as such leaves little for making much profit. At first glance it looks like a simple thing to make but don't bet on it

Lewm,
Apart from the OTT article on the Grand Prix Monaco in Hi Fi Plus by Roy Gregory a couple of years ago, there does not seem to be huge fan base for this turntable?
Have you heard one or compared one to other DD turntables?

Thanks for all of your info. Well, we can ask the BKB to sand and cut into the size we want!

Dear Halcro, Have not laid eyes on a live GPM, let alone heard one. Maybe I will see one at the RMAF, if I get there.

Dear Dbcooper, I am constructing a combination baltic birch/slate plinth for my SP10 Mk3. Albert was kind enough to lend me his idea of an energy absorbing metal block and rod, built into the (wood part of the) plinth. It is taking forever, and little problems take me a long time to solve, because I have a profession and a family with more important problems that have to come first. But the end is in sight. (So too is mine.)