Jaegers 6" f/10 "GJD" OTA Construction - The Main Tube (groove made along card stock edge)
 

Main tube ready to be cut to proper size - 3. (Click to see an enlarged image.)

 
Now that the card stock has been wrapped and attached around the main tube, I am now ready to make a shallow cut with my hacksaw around its circumference along the edge as seen in the image above. This process will guarantee a near perfect perpendicular cut. Precision is the key.