I'm working through the thought process of how a LP pneumatic flipper could work if the return was based upon a bungee cord (i.e. like a FP system). The bit im stuck on is the position and size of the hole that would need to be drilled into the bottom of the ram. As its low pressure, I'm thinking 0.5mm on the opposite side to the port so the gas has further to travel before exiting the ram. Obviously, I only have one shot at drilling this hole so any advice would be great. FYI, the ram is 50mm stroke and 80mm bore.

Cheers

Dan