It would take me at least a month to recover mentally after such a blow...... I feel truely sorry for him.
A lot depends on exactly what part of the table is broken.
Maybe it can be nickel welded?
-Can Sedgwick supply a new table as spare part?
-Otherwise it might be a possiblity to make a set of wooden patterns with proper allowances for schrinkage and machining and have a new table cast. Let is season in an unheated shed for at least half a year and have it machined flat.
-Or it might be possible to fabricate a table and then send if for annealing and then have it machined. Though mild steel has generally higher friction than cast iron.
Or....if his planer/thicknesser isn't in good condition except this table....... get another one......