QUOTE(disco4hire @ Oct 31 2008, 11:28 AM)

Dry ice isn't corrosive, but it is potentially hazardous, and if used in an enclosed environment you need to monitor oxygen levels. See 'Wiki' text below:
Although useful in a number of contexts, dry ice can cause severe skin damage through cold burns. It is especially dangerous because dry ice produces a lot of fog, which can make it hard to see exactly where the dry ice is. Generally, airline passengers are not permitted to bring packages containing dry ice into an airplane cabin.
Dry ice also evaporates in large quantities of carbon dioxide gas, which could displace oxygen containing air and pose a danger of asphyxiation.
Thats what I meant.....PFT bleeding nitpickers
Ok I made an adon like Utubes and it works,all I used was a 10 l;itre paint tin and some fittings from B&Q.Cost me £7 total.
giving it a whirl tonight.