diffraction gratings

[kranic]

This site has some good diffraction gratings for effects.
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is the site safe? or is there another good place to get them?

Also what are some cool/cheap prisms to buy?

 

[3zuli]

site and products look good, prices are great but they have huge minimum orders :undecided:
GB :anyone:

 

[hugo999999]

i would be interested... but you may have a hard time finding 50ish more

EDIT: seems like the only way i would ever buy from this site is through a GB:

Priority Mail $46.95
USPS First Class Mail $46.95
USPS International $30.00 :wtf:

 

[Howie]

I came across this video last night and he mentioned that site. I'm sure others have seen or done this before but I thought he made some pretty cool patterns, and he uses LEGOS.

YouTube - DIY Laser Show: The Model of the Atom

There is a 10 sheet minimum for the diffraction grating sheets and if you can get a few of each, I'll probably spend the $25. I know I've got a bunch of dc motors around here somewhere. Kinda neat.