Homebrew PCBs

When I did my laminator hack, I tested a couple of toners.  HP melts 
around 170C (340F) and the high-temp Brother around 187C (370F).  I've 
yet to take the time to truly characterize the HP toner though - toners 
have two interesting temperatures, the one where they become plastic and 
sticky (good) and the higher one where they actually turn liquid (bad). 
  You want something between those :-)