Homebrew PCBs

I've heard of people using aquarium heaters.
TIME = TEMP_RISE * VOLUME * 4200 / POWER
Where: TIME is approximate time in seconds to heat. TEMP_RISE is 
  temperature increase in kelvin. POWER is heater wattage, VOLUME 
is solution liters.

You will only get a tired arm holding the heat gun and increase 
your electricity bill.

Adam.

Moore wrote:
> This is a stupid question but I havent found the solution.  My supply 
> of etchant comes in plastic bottles.  I want to preheat it before 
> using.  No, noway am I using my microwave.  I have a heat gun and 
> figure if I could find glass product such as pyrex that had a lid for 
> storage I'd like to use it any suggestions?
> 
> Phil
> 
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