Professional Finger Joint Cutter Heads694. 008 The CMT professional finger joint cutter head makes the strongest side to side joints on all wood types and composites. The tightness of the joint and the maximum surface area for glue application ensure that the joint itself is stronger than an unworked piece of wood. Maximum thickness 47mm. For use on spindle moulder machines. Perfect for moulding and furniture specialists. Suitable for all materials, but ideal on hard wood and wood panels.