Paul Whatton <
paul@...> writes:
> Big tracks with very wide spaces!
With big traces I think any technique would work. I tend to need
smaller ones (0.5mm pitch is standard for my projects).
> The last of my etchant is exhausted this evening which is really
> frustrating because I have just one more board to make!
Do you have access to HCl and H2O2? The first can be found at some
hardware stores in the paint dept (it's for cleaning concrete before
painting) or at pool supply stores (it decreases pH). The second can be
found at any drug store or supermarket.
Some etchants can be "boosted" with just H2O2, also.