I've seen small hydraulics used in a lot of scenery automation in theatre. I don't think there is a regular supplier, but many surplus shops often have an odd assortment. Princess Auto (a Canadian company) makes custom hydraulic cylinders. I don't know if they're able to make them that small though. Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams "Alan B. Pearce" wrote: > A good place to start is probably an outfit that manufactures replacement > gas lifts for motor vehicle tailgates and the like. Else any plant outfit > that manufactures safety guards for equipment that would be big enough to > require power lifting. The sort of things used on fork lift trucks and mini > diggers would be too large I would expect. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body