I am looking for a suitable, white polypropylene material for lamp shades.
Who sells this in sheets or rolls?
A quick web search shows up many results - best to find someone locally, I use Amari Plastics in the UK.
Nothing useful turns up through a local search (small country).
What specific product have you had success with?
I use the 144 lb Yupo polypropylene sheet and it lasercuts like a charm: http://yupousa.com/what-is-yupo/ Our art supply stores stock 20" x 26" in both translucent and opaque white (2 weights).
Hope this helps. - Nancy