Maybe c'? a fan like me who is having fun with these things and can? give me an advice.

Do I have to print a circuit with the method of photo-engraving and can't get it to come out. Use the bromografo to impress the board. The circuit I printed it onto a sheet of glossy paper. After the bromografo to uv rays, wash the plate with the caustic soda and exits out of the circuit. After I put the plate in the ferric chloride and ? them that I can.

Or does not corrode, such as when I exposed too much, block uv rays, or corrode the slopes, as when exposed for a short time. The tests I have done all. Even with differences of + or - 30 sec exposure



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