Jaegers 6" f/10 "GJD" OTA Construction - Main Tube (ProtoStar FlockBoard marked to cut - 3)
 

ProtoStar FlockBoard Material removed from Main Tube after being marked for trimming - 9 (Click to see an enlarged image.)

 
...and here is a photo taking of the left end of the flocking material ready to be cut to required dimensions for installing inside the main tube. The is the left side.