Originally Posted by
Tazza
I liked the hydraulic double acting cylinder design, but i was too concerned with making mine run that way. With hydraulics, you stand far more chances of damage if something was to hang up. Most of the pumps generate around 2,000 PSI of pressure, but you can install a relief to drop that down. Hoh did you manage the heat the pump generated, did it need an oil cooler?
Hydraulics are far smoother than air, as it is not compressible. You the tight point where you cut the sprue, it is nice and smooth.
The simplicity of timers is great though, a lot fewer points that it can fail. The limit switches are really good as it will not move further without it knowing where the mold is.