Here's me at the stove boiling up corks to soften them up for fitting much like you would corks for a petrol tap. This is definitely the one time that something I cook tastes like it should! Great care should be taken when fitting because the corks while soft are thin and fragile. The cork inserts will have uneven thicknesses after boiling due to the different densities of cellulose in each piece therefore I just centered them in each plate.
Once completed, I let the the cork inserts thoroughly dry and will sand them flat and to size. I haven't figured that out yet but Rick Parkington said it was knucklebusting stuff. Stayed tuned for a full report.