I'm working on finalizing the gripper for my robot, and have been having a lot of trouble getting these silicone tubes fitted well enough to not leak air. I'm using a solenoid with M5 connections, the specified 3mm OD silicone tubing, and a quarter inch air compressor line. The fittings are M5 adaptors to connect the 1/4in OD tube to the M5 fitting on the soleniod, then 2 3mm to M5 fittings for the silicone tubes. Lot of trouble fixing leaks, and would love some advice!
I also noticed the connectors used for your robot in the manual appeared to be homemade. Do you have suggestions for this?