Each of the UV resin products that are available today are designed to be cured under slightly different wavelength UV lights. That means that each product will cure the best with the light designed for that product. If you use a light that emits UV light that is at a slightly wrong wavelength, the resin might not cure correctly. If you use a generic light to cure your resin, you might want to stick your flies out in the sun for a while. This will make sure that it cures properly.