Hello
I haven't made a PCB board for 30 years or more but I don't remember it being hard. Now though, I can't stop the acid etching through the lines I've drawn. I'm using ferric chloride, and a pen which is sold for this purpose but which appears to be identical to the ones used for writing on CDs. It doesn't seem to be acid-resistant enough. I'm sure I used to have a pen that easily withstood the acid but I'm not sure how to find one now. I think I need something more like nail varnish, but in a pen, not a pot.
I haven't made a PCB board for 30 years or more but I don't remember it being hard. Now though, I can't stop the acid etching through the lines I've drawn. I'm using ferric chloride, and a pen which is sold for this purpose but which appears to be identical to the ones used for writing on CDs. It doesn't seem to be acid-resistant enough. I'm sure I used to have a pen that easily withstood the acid but I'm not sure how to find one now. I think I need something more like nail varnish, but in a pen, not a pot.