I wandered down to the store with a 405nm light source and a fluorescent target, I doubled checked and the amber definitely blocks the lower frequencies.
For those of you with a tap plastic nearby in store is definitely the way to go... a 150 mm (6") square is 10$ plus shipping online... it cost me a 1.80$ at the store
a thinner option than acrylic sheet is welding curtain but that stuff seems hard to buy small amounts of.Statistics: Posted by Praesmeodymium — Thu Feb 20, 2014 3:49 am
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