Hi All,
Thought I'd post some details on the vac system i have just finished building.
I bought a venutri kit from veneer supplies
http://www.veneersupplies.com/products/ ... s-Kit.html I 'borrowed' the idea of using an LPG tank and enclosure from pics on the website, glad i went with the enclosure as it reduces the noise quite dramatically. Also the LPG tank i used was one i got from my old man, it had been sitting in the paddock with an open top for bout 5 years, i didn't take any chances with it so also gave it a good day worth of flushing out with water (tank water of course!). i don't recommend anyone trying to use one unless you really know what you are doing i have heard some horror stories.. get a gas fitter to sort it out!
I've found the tank to be very good with no leakage, i can switch off the power and air supply to unit come back in the morning and the tank will still be at max vac.
as you can see by the dial it pulls just on -27hg and has an amazing amount of clamping pressure.
I'll mainly use this for clamping parts on the cnc bed, veneering and gluing parts.... plus any other uses i can think of! another plus to building the enclosure was putting some wheels on it to make it mobile.
Cheers
Glenn