Don
Toner transfer method for making PC boards is very practical and economical. The use of heat for the transferring is not. Large boards expand with heat (more than the laser print) and heat is applied to the top of the toner and not to the bottom contacting the copper layer. Too much heat melts and deforms the toner, too little heat and it won't adhere uniformly. In this Instructable I will describe a very simple technique I've been using for over 15 years. It is very fail-proof and involves the use of only 2 common chemicals : Ethyl Alcohol and Acetone. You can replace the Acetone with Toluene or Xylene, but you will have to experiment with the proportions.
http://www.instructables.com/id/Heatless-cold-Toner-Transfer-for-PCB-Making/?ALLSTEPS
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