Rail

Two rails must be attached next to eachother under the arm, when you do this you must take the with of the carveheadholder in mind.

Roalers

The roalers must be placed in the rail and attached to the carveheadholder .Attach them in such a way that the carveheadholder can only go in the direction of the rails (The best way is to attach 4 roalers on each side).