by tiw » Dec 15th, '07, 16:05
Flash paper isn't that hard to make - however it's only advisable if you really want to make a lot as the chemicals involved are quite hazardous to your health.
I watched a video called "Custom Flashpaper", which outlined all the steps - though watching it immediately put me off flash products for good.
In a nutshell you form a chemical bath using two very corrosive chemicals which releases a lot of very nasty fumes, and I mean A LOT. You would need to do this both outside and with a fan to suck the fumes away, plus goggles and something to cover your nose and mouth. You then soak the paper for a while, then move it into a large pot of hot water on a stove and soak for several hours, dry it and you're done.
I really wouldn't recommend it, nor would I follow any of the steps I have just outlined on a whim as I've probably missed something very important. Good luck, and I'll forward your Christmas card to A&E!