Scroll shear tool

A scroll shear tool comprising:

• a tool body housing a motor, wherein the motor is configured to transmit rotational power through a transmission to a reciprocatory spindle, the transmission including a drive member, wherein the reciprocatory spindle includes a first end that is supported by the drive member and a second end distal from the drive member;
• a blade support arm at least partially surrounding the reciprocatory spindle;
• a fixed blade coupled to the blade support arm;
• a moving blade coupled to the second end of the reciprocatory spindle;
• and
• a blade clearance adjustment mechanism configured to adjust a horizontal blade clearance between the fixed blade and the moving blade, wherein the blade clearance adjustment mechanism includes
• an adjustment bushing supported within a bushing pathway, wherein the adjustment bushing includes an internal bore that supports the reciprocatory spindle and wherein a relative position of the adjustment bushing within the bushing pathway affects a relative position of the moving blade with respect to the fixed blade, and
• an adjustment member coupled to the adjustment bushing, wherein the adjustment member is configured to change the relative position of the adjustment bushing between a first position associated with a first blade clearance and a second position associated with a second blade clearance.