[sdiy] My PCB positives are see through!

[jays at aracnet.com]

It use to be that films were really that. They would be done on high contrast photo film that would give true black. I haven't done any PCB work in a long, long, long time and don't know how well the new systems work. There are a lot of other factors too like the light, exposure....

Typically when you start a new 'process' like this up you're going to 'burn' (destroy) a few boards getting exposure, light, developing, etching down to something that works for you. Might as well give it a try.

Jay S.

Jeff Farr wrote:

> I guess it's possible that this isn't a big deal, but I just got my
> prints back on transparancies for etching a few boards and, despite
> having them done at high quality, I can see right through the ground
> plane when I hold it up to any light.  The traces themselves look alot
> better, but I'm still a bit un-nerved about this.  I called the
> printers and they've assured me this is normal for anything that uses
> toner and the only real option for better quality is to use a press
> (big money).  I'd rather not try to stack multiple copies on top of
> one another (even with 3 I can still see through them a bit) as
> aligning them will be a pain.  Comments?