:> I recently came into possesion of a slab of white oak about 6 feet in :> diameter, and 6" thick.
: Freshly cut disk from a 400 year old tree?
: Act NOW. It won't wait.
: Your options are to either slice the thing in half on the diameter, : then allow it to season as two wedges. You can later re-joint these, : either by making them into chords and losing the central pith, or by : re-assembling narrower segments from either more than one disk, or by : narrowing them all and losing a little of the centre.
: Alternatively displace the water in it by immersing the whole disk in a : bath of PEG-1000 (available from woodturning suppliers)
The stuff paints on -- a whole bath wouldn't be needed. Pour on, spread, wait for it to sink in, repeat.
: OTOH, you could just let it crack and deal with that later, through : some obvious infill or Nakashima-style treatment.
Nakashima dealt with cracks in longgrain slabs -- not a disk of endgrain. His butterfly keys might not work all that well in relatively weak endgrain.
-- Andy Barss