How good are my %? You're asking what percentage of the wood I stabilize will achieve 100% penetration? Of the wood I feel confident about stabilizing (open pore type woods) I think they all pass the tests, sink in water, etc. I sometimes try woods I'm not sure of like American Black Walnut and it doesn't do as good. I plan to try some walnut again to see how it works if I leave in vacuum for perhaps 6 yrs, then leave in resin soaking for a week and see how well it penetrates then.
K&G can stabilize walnut with 100% penetration - they got the equip to do it. My vacuum chamber only works on open pore type stuff. I guess it'd do a corn cob just fine?