Both the heat transfer and cold transfer methods work by printing out your circuit (in this case our logo) onto high gloss laser printer paper. The idea is that the method that the printer uses to create an image on paper is done via heating, which causes a strong enough bond to keep it in place on normal paper, but a weaker bond with the glossy surface (if this is something you would like to know more about, here is a good explanation). Thus, the idea is to make the ink “gooey” again so that it sticks to the copper surface, after which the paper backing can be weakened by water and then removed.
* It’s always advised that you place several copies of the image on a single sheet when printing, and never expect all of them to work.*Another similarity between the two methods is in the preparation. First, you will need to cut the PC board into segments that are going to be used. Then, when everything else is ready (and I cannot stress this enough: make sure everything is ready), lightly sand the surface. This will both give the ink a place to stick to and remove the layer of oxidation which may have formed. After which cleaning the surface using some alcohol. This is to remove any remaining dust or oils from the surface. The best method to apply the alcohol is to use coffee filters, which should be readily available if you don’t have access to lint-free wipes. Using actual tissue paper or fabric will leave behind fibers that will compromise your final image.