The main change (I believe) is that I have different Laser printers now. A different brand (and, obviously, different toner).
It seems the temperature required for the PCB transfer is much higher. So the instructions for a "Brother MFC" laser printer are:
- Print the PCB in "Mirror" (it goes upside down, on bottom of the board).
- Thoroughly scratch the surface of the PCB with 600 wet & dry paper (NOT steel wool).
- Then wet ... but don't touch with fingers (NO OIL !)
- Then put a chopping board (wooden) on ironing table, with board on top of that.
- Then iron on nearly full heat (2/3rds the way up the "steam" setting).
- Press down hard. Edges need special attention.
- Do this for 3 or 4 minutes.
- Leave the board alone while it cools down by itself.
