Google aluminized mirror, vacuum deposition, overcoated aluminum; telescope aluminizing (why build when you can buy)
Basicly a large chamber is built an pumped down to a very high vacuum, a tungsten heater matrix then evaporates the aluminum and a silicon monoxide coating is laid down to protect the aluminum and enhance the reflectivity.
The vacuum level is high enough to require a diffusion or turbopump as well as a roughing pump.
Forget about chemical silvering unless your really into suffering and wasting large amounts of time and money.
Try One Stop Laser Shop, ask for Fred or Amanda if you want to buy mirror in bulk. JDSU also sells mirror in bulk.
Steve
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...