Homebrew PCBs

Hi,

got the little oven today i was talking about.
The initial plan was that i buy two so i can transplant the heaters all  
into one for more power.
In the shop i inspected the oven, and it looked like the heaters were a  
single unit (like a loop), because if i would wiggle one the other moved  
too. So i did not by the second one after all.

At home i took it apart first thing (of course) and found there are  
individual heater tubes but they are connected at one end by a solid wire  
tack-welded to connect them, so that's why they moved together. It would  
be no problem to add more heaters.

I'm not sure now if i should go and get another oven or not. Measured the  
temperature profile, and it is roughly 1C per second, a bit faster at  
first, reaching 220C in 140 seconds. I'm not sure now if i should buy  
another oven for the heaters or not.

Any recommendations?

ST