That's why you can run down to your local RadioShack and pick up this guy for a few bucks. Takes care of a lot of the problem. A fan blowing on the RAMPS/heatsink/stepper drivers isn't going to hurt either...and is generally recommended for maximum lifespan so I've seen recommended.Quote
ndujar
Hmmmm..my only advice against RAMPS is how it deals with its MOSFETS...it has a flaw in design that makes them enter in resonance with the hotbed and, unless they are quite powerful, they tend to fry:
Alternatively, you can just replace the mosfets. They aren't expensive and if you're at the point of building your own printer, you hopefully know how to solder/desolder a few leads.