A snow bag couldn't be easier its' made thus
Firstly you a need a length of material long enough to run the width of the stage or acting area it should be approx 1 meter or 3' wide
run wooden batterns along the long sides so the it can be attached to the stage grid (or roof)
hold the batterns together and at the lowest point of the material make cuts with scissors or sharp knife every 1" or so - each cut should be around 2 -3" long
If you're lucky like me, you can affix the bag between 2 flying bars and by lifting each alternately by 12" the snow should fall. If you havent got flying bars then fix the wooden batterns an attach nylon cord into the centre of the bag, running upwards then down to the stage floor (you'll need several depending on the length of the bag) by puling you should get snow to fall
The snow can be brough from most theatrical suppliers -it's special flame retardant plastic - don't be tempted to make your own. - make sure you flameproof your bag too
I hope this is clear and helpful - if you need a diagram mail me a fax number and I'll sketch one out for you. I'm making one myself right now for use this week
<!--emo&:)--><img src='http://www.amdram.co.uk/forums/html/emoticons/smile.gif' border='0' valign='absmiddle' alt='smile.gif'><!--endemo-->
