Homebrew PCBs

>ST wrote:
>
> How do you you measure it with a syringe and a jar?
> I only know the eyedropper method with counting drops.

Same way you do with an eye dropper.

Known volume of CuCl etchant in water

Known molarity base to mix in with it till the
solution start to precipitate.

Just that with a syringe you dont need to keep count

> But wouldn't the stainless needle corrode from the etchant?

Flush needle with water as soon as it is used to measure
etchant.