Nice piece of ebony.

Starts life as block turned round



Then detail machining top and bottom to get it to fit the plinth / subplinth.



With cutouts for plinth and subplinth and mounting holes etc. The fitting kit is popped in from above, making removal, for say fitting another arm or armboard, a doddle. All polished up (much rubbing down, and many layers of wax and lots of elbow grease).



Off to San Francisco - hope to get some on deck pics to share.