Hi. I'm not much of an engineer, but I need a linear actuator (rail) for something. I found OpenBuilds through searching for linear actuator. It seems to me that perhaps I can save a lot of money building my own electric linear actuator with the V slot rail. Not sure what the actual specifications of V slot rail are, but it should do the job. I only need linear motion in one axis and need about 0.5mm accuracy in position.