I have only done a few PCBs so far using the toner transfer method and Ferric Chloride as an etchant.
I have noticed that on large (thick) traces and large rectangles, I get a bit of speckling on the copper. It almost looks like the copper started to etch there.
I just printed out another project and noticed I can see through the toner to the printing on the page.
Should I be able to see through the toner? Is this the reason I am am seeing this problem?
Or is it another reason? Perhaps leaving the board in the etching solution too long?
I have noticed that on large (thick) traces and large rectangles, I get a bit of speckling on the copper. It almost looks like the copper started to etch there.
I just printed out another project and noticed I can see through the toner to the printing on the page.
Should I be able to see through the toner? Is this the reason I am am seeing this problem?
Or is it another reason? Perhaps leaving the board in the etching solution too long?