Adjustable cutting machine

A machine for cutting sheet material having a base and a motor assembly mounted thereon adapted to rotate a circular cutting blade about an axis normally parallel to said base comprising:

• main plate means pivotably supporting said motor and blade assembly to said base, a locking arm element pivotably secured to said pivotably supporting means, and to said base about a common pivot axis with the axis of said pivot of said pivotably supporting means;
• and means securing said pivotably supporting means in a substantially fixed set position including means for locking said locking arm element in place, whereby the axis of said blade or the plane of said cutting blade may be set at a predetermined angular position so as to cut said sheet material at a desired angle with respect to the plane of said sheet material.