I don't think that will work. Others more knowledgeable than me can give you a technical explanation but I use a UV light box that will take up to an 11x14in negative in a printing frame and it has 8 UV bulbs and a clearance of approx. 2 1/2 to 3 inches from the negative. it also has a cooling fan. I have also used exposure to the sun. I think if you had enough light source in the enlarger heat would be a problem.