Levelling of a Slab
First part of levelling a slab is to determine how much cup or twist is in the slab then I set up the slab with wedges to make the slab sit in the best possible position so as to remove the lest amount on wood I may start on the face or bottom side, each slab is different so I may have to turn it over several times to achieve the best result. The slab is then levelled and sanded on both sides, the face is then finished with a random orbital sander to a fine finish, ready for coating.
Planing a Board
To achieve a level board up to 400mm wide first the board is placed on the slabmaster and wedged and machined to achieve 1 level surface then run through the planer. End result is a perfectly flat board.