The following pictures are reproduced here by permission of Jarod of RunRyder. He clearly wanted to shed
some unwanted weight from his Trex and the dremel got a good workout ;-)

This rather more extreme modification shed a total of 18g from the airframe of the Trex but torsional stiffness
was still OK in the main frames themselves.
I would like to point out that although these pictures came from Jarod the orignal Dr. Dremel diet was originally posted by Boyd.