I collaborated with another beekeeper a while back on building 8-frame migratory pallets. You can download detailed building instructions here.
In the Beekeepers Workshop – This site, from the Michigan Beekeepers Association, is one of the best I’ve found for detailed information (including videos) on building equipment.
Tim MacVittie, a fellow beekeeper, updated the Drew Coates design for making five frame nuc boxes. This design allows you to build five nuc boxes (rather than 4) since it is based upon medium frames. You need to be very careful with your cuts, however, as there is very little waste.Nuc Box Cut Sheet – 5 boxes medium.