I know that this is a very old thread, but a lot of people have been having a hard time finding the Brainerd hinge used in the Paradise Box project from Vectric. They are still being made, and are available.
I found them here: http://www.dlawlesshardware.com/continuoushing.html
Before ordering them online, I called them to make sure that had some in stock, and the nice lady on the phone told me that had over 2000 of them in stock. I ordered 6 of them and received them in 3 days.
If this is an inappropriate post, please delete it and accept my sincerest apologies. I have nothing to do with D. Lawless Hardware, and am not affiliated with them or anyone else in any way. Just trying to help out with a source for the part.
Double check, triple check, measure, measure, cut...