Homebrew PCBs

I'm in the process of looking for a toaster oven to turn into a 
reflow oven.  I've been looking in second-hand stores and most of 
these are pretty junky.  I saw a convection toaster oven for like $70 
new at (I think) target.  Given that these essentially blow hot air, 
I thought it might be ideal for conversion and that it might be a 
solution to the heat loss problem.  I think I'd need to install some 
sort of flow defuser to prevent moving of smaller, lighter parts.  
Has anyone tried one?  

I might want to build a controller for it that would cycle the heat 
(pre-heat, heat, cool down) in a controllen fashion.

--- In Homebrew_PCBs@yahoogroups.com, Markus Zingg <m.zingg@n...> 
wrote:
> 
> I do have one of them here to play with, but I heard that the heat
> disapears way too fast if you have to open the door to feed it. 
Since
> I intend to solder BGA's with it I figure I will have to modify it
> quite a bit. Did not yet found the time to start this project, but 
the
> day will come - I'm sure.
> 
> Markus