Its not so much to block light, but to soften the light that does come through the white parts. If you look at the pictures above, there are strange shadows where you can see the internal reflections of the plastic they use for support and to refract light to under the needles. I dont think it will change the pricing point much, if at all, because the layers I think can be used from pieces that are scrapped anyhow. (36" sheet, 12" max cut area for alignment purposes right now)
Waste not, want not, right?
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