How to make hydraulic valve?

[cosworth34677]

so what if you put some kind of "buffer" between the Aluminum? like a brass thin shim or washer? of even a brass gasket? the only reason i ask because again i only have the abillaty (<---spelled wrong) to cnc aluminum? the cnc router at work will only route softer metals only because of our bits. and the boss won't let me cut steel on it i asked before for parts for my real car.

[Finster]

Perhaps some automotive gasket material between the 2 main pieces would work?

Like: http://www.autozone.com/autozone/acc...erial/_/N-25w7