Linn Bedrok LP12 Plinth Upgrade

What exactly does 'diamond hardened' mean in this context?  I am looking for a metallurgical explanation, please!

@richardbrand 

You might find what you’re looking for here.

https://docs.linn.co.uk/wiki/index.php/Karousel

https://en.wikipedia.org/wiki/Diamond-like_carbon

Hope that helps.

@newton_john 

Thanks - exactly what I was looking for.  I will read "diamond hardened" to mean a "Diamond-Like Carbon Coating" which is likely to be plasma sputtered onto a substrate such as tool steel in a vacuum under tightly controlled conditions,

I admit I have trouble visualising the 'normal' crystal structure of diamond despite animations such as this:  Diamond cubic - Wikipedia

@richardbrand

No wonder it’s expensive.

Yes, I remember struggling at university with text book representations of three dimensional structures. It’s probably easier now with YouTube, etc.

   Linn has a way of adopting certain outside improvements to their LP12.  Case in point, the Bedrock plinth: The British outfit, "houseoflinn", Europe's Leading Linn Specialists(their quote) came up with a laminated Bamboo plinth, The Booplinth, years ago that was machined out of a single block laminated bamboo.  

   In the  August 1984 Page 51, issue of Hifi News And Record Review(J Atkinson was still editor), an article titled,"Sacrilege" by Martin Colloms, had to do with the reason LP12s had this sort of fat bass(personally I liked it and most owners), and he demonstrated the reason for it and a fix for it, the issue centered around the platter bearing/well.  The Cirkus wasn't released until (1993?) to address this issue.  By the way, I did Martin's fix and it worked marvelously( machinist made the part for me).  If you're an LP12 owner, a worthwhile read.  I still have my copy.  $2.75 at Krochs and Brentanos back then.  I think they're fifteen bucks or more now but still my favorite audio journal and authority on audio subjects.