Jaegers 6" f/10 "GJD" OTA Construction - Main Tube (ProtoStar FlockBoard marked to cut - 1)
 

ProtoStar FlockBoard Material unrolled in Main Tube being positioned and marked for trimming - 7 (Click to see an enlarged image.)

 
This close-up image shows where the ProtoStar FlockBoard flocking material fully was expanded inside the main tube and marked at the intersection point where the end of the material stops, as encircled in red in the picture above. I will make another mark on the flocking material at the other end of main tube. Then, I will draw a straight line between to the two (2) marks for trimming along.