linear actuator 136 constantly position both the angle 94 of the saw spindle about spindle pivot housing pivot axis 92 and the vertical position of the saws 75 relative to the profile of center cant 12 as is passes through saws 75 in this example spindle 74 is an extended length spindle and the sawblades 75 are mounted to the extended length spindle with a desired thickness spacer between the sawblades to cut the desired width of finished lumber the sawblades are held onto the extended length spindle with a nut at the end of the spindle fig2 shows the axis 99 of saw spindle 74 in roughly a vertical position this same gang assembly could also have the saw spindle axis 99 in roughly a horizontal position there are an unlimited number of applications for using an extendable universal joint driveline to drive the different cutting tools used in the manufacture of lumber and other wood products using an extendable universal joint driveline to drive the cutting tool allows the drive motor to stay fixed reducing the mass that has to be positioned to that of the saw positioner 76 and the actual cutting tools this reduced mass allows the cutting tools of saw positioner 76 to be positioned faster than conventional cutting tools that are positioned with the drive motor and motor mounting base the above descriptions may have used terms such as above below top bottom over under et cetera these terms are used to aid understanding of the.