hi all, somewhat related to physics. i embark on a new project, to build my own TV lift using pneumatic lift. anyone have any links to places that carry thin OD (~3/4") that has about 24" stroke and can lift ~25-30lbs? i find spending $600 on a electric TV lift absurd, with my metal stock i already have i can build the lift components but need the lifting item. single action is all that is needed, weight of TV will return it to down position. i'll probably need a psi controlled switch to allow enough PSI into the cylinder to keep the TV fully extended, and a good 1way valve for ingress air, and then a solenoid valve to release the air (i thinking a 555 timer in one shot to energize the solenoid for a period of time to allow TV to come down slowly, etc). all this will be built into a fully wireless rolling credenza. will have 4 12vdc Li-ion batts in series, that 48vdc will power a real sine inverter to run the 120vac 60hz items, so i can build some things in DC and will also have 120vac available. i welcome any ideas. thanks.