I was asked to give a follow-up report on my Valchromat purchase in case others might be interested, so here goes.
I picked up several sheets last week, one 30mm, three 19mm, one 12mm, and one 8mm. I also picked up two 25mm sheets for Brandon.
interlam is getting out of the Valchromat business in favor of a similar product called Forescolor, and simply selling off what's left of their inventory. When it's gone it's gone. Call them before you order to see what they have. The thickness was more important to me than the color so I ended up with one green sheet of 12mm instead of light brown.
It was a little bit of an ordeal because the wheels turn slowly there, but be persistent. Apparently the Valchromat is just stuffed into an out of the way corner of their warehouse and is hard to get to. It took three days from when I ordered to when I was able to pick it up. Their number is 336-786-6254: ask for Kevin.
The place does more than sell sheet goods. They do custom CNC on immense machines to carve shapes and patterns into the Forescolor. They can laminate two sheets together so as the CNC carves the shapes through the first sheet, the second color is revealed.
There is really no limit to what kind of shapes they can produce.
It was a pretty cool operation to see. There were 4-5 machines busily routing away in a room the size of a couple basketball courts with just one guy in there fiddling away on his phone to monitor the whole thing.