Step 4: Attach the mask to the blank board

Picture of Attach the mask to the blank board
Carefully cut out the mask for the copper side from your printout. Place it face-down onto your board, so that the toner faces the copper. I use tiny bits of scotch tape on each edge to hold the mask in place. That might not be necessary if your blank is somewhat larger than your mask. I found that the mask tends to slide if it's not securely taped; you want to avoid that when working with tight tolerances.
nickjohnson9 years ago
Use SMALL pieces of tape, as they get hard to remove after ironing...