Step 11 : Things heat up
Being careful not to shift your P-n-P put the hot iron on the board. There is no need to press down on the board. As long as you have good surface contact, you're cool (or hot as the case may be in this instance). Your not pressing the image into the copper, instead you’re heating up the whole stack and the dark images on the P-N-P will stick to the board.
I start by letting the iron just sit there for no less than 1 minute. I will then slowly move the iron around to get any cool spots then let it sit some more. The one thing to remember here is that you have to heat up the board to the temp of the iron. This can take a while because on one side of the board, you've got the P-N-P, and a slice of paper against the hot iron surface, but on the other side of the board you have the coldness of your working surface. I would recommend using a thin cloth on your work bench. That way you don’t have to transfer heat to the table, the cloth will insulate. The P-N-P won't stick right until the board is as hot as the iron. So be patient. You can't over cook it (unless you leave the iron on the board and leave the room to go watch Baywatch or something). On these small boards, I baked them for about 4 minutes. Larger boards will take a little longer.
