Shop made articulated hollowing arm

Shop made articulated hollowing arm and cutter. Because my hollow vessels are getting deeper and harder to reach I had to resort to this and saving 100's of dollars was a huge incentive.
Making your own tools just gives you a certain amount of satisfaction, I know I could buy one of these but many like me would rather make it
Cost in material 42 bucks including cutter.
This should allow me to hollow out to 12" deep with a mouth opening of 1"

Видео Shop made articulated hollowing arm канала Rebel Turner on iDos