I need this grid made, and I don't care about the material as long as it is opaque (not transparent). It will be used to isolate light to these small square shafts. I've contacted two laser cutters who cannot make this cut and preserve the small 1mm walls. They have tried plywood and depron foam with no success.
If anyone thinks they can make this, let me know. I'm looking at making a few hundred. Due to the limited quantity, I'd like to stick with laser but will consider a mold if that's the only way. Material must be sourced by vendor, but time frame is loose. Thank you.