Originally Posted By: keith
Weaker etching solutions for slightly longer intervals are generally easier to control.

I've stuck with 10% etchant solution thus far, but understand Dr. Gaddy to have reduced that depending on conditions. Will likely work through the same experimentation shortly.

Originally Posted By: keith
Horizontal dunks in the etch are better than vertical dunks which leave one end in the solution for a few seconds longer.

Like others, I'm using a vertical chamber, but am quick to submerge, remove, rinse, and neutralize. The horizontal approach certainly makes sense to move to when I find a suitable vat.