PNP blue ink bleeding?

[lldrew]

I've successfully used pnp blue and made my on board on two tonepad projects but, I am trying to make a professor tweed board, but there is always one trace that bleeds through to another because they are so close together.  Is there a way to make it so it does not bleed on to another trace?

[$uperpuma]

if you cannot alter the circuit with a graphics program, photoshop, etc, then what I do is just physically scratch the excess etch-resist off of the copper...so that the right amount of space is exposed to the etchant...

[markm]

if you cannot alter the circuit with a graphics program, photoshop, etc, then what I do is just physically scratch the excess etch-resist off of the copper...so that the right amount of space is exposed to the etchant...

I do this all the time to clean up traces.
A good tool for doing this is a toothpick, it work real well.

[trevize]

and gringo's layout have too close and small traces for comfortable pnp and laser paper method.

btw
i clean up traces with a toothpick too!

[lldrew]

could this be caused by me not preheating the board before putting the sheet on?

[Pushtone]

Is you iron to hot?
I had PnP bleeding too. My problem was the iron was just TOO HOT.
Now using the lowest "ployester" setting on iron and blue traces do not bleed.
The ironing takes a little longer now.

[QSQCaito]

Appart from too high temperature, i read somewhere it was important to let it cool.. if not ink might spread, one it has cooled down, remove the PNP

Bye bye

Diego Andrés Cao

[markm]

Too much heat would certainly not help the situation.
Sometimes overdoing it on the "dark" setting while laser printing can be a problem too.
Too much toner is bad, bad, bad for getting clean traces.....just my perspective.