Originally Posted by dwells
Yes, the hollow core door is a great building surface. They are flat and light weight and only about $20 at Home Depot. I bought one when I started my OlyIII build. That and glass tables yield very true components.
I gotta say, I MUCH prefer having a surface that takes pins readily. Trying to push pins into an actual wood surface is something I tried, but it didn't work for me at all. I like my ceiling tiles. And, after all, they can be laid on TOP of any flat surface. I've never had a problem with one of them not laying flat, even if it is a bit warped when I first bring it home. Lay it out, and after a couple of humid days, it's not sticking up anywhere. (But I tend to tape the edges down anyway.)
And they're handy to cut. I get 24 x 48 inch Armstrong acoustic tiles, which have a flat back, and if I need something longer than 48 inches, I can cut off a section of another tile and just lay it next to the first one, as long as the underlying surface is large enough. (I have a counter in my house that is a little low for building, but is exactly 2 feet wide and 8 feet long.) There may be some projects that isn't enough space for, but I don't think I'll be building any of those.