R
Rodney
- Jan 1, 1970
- 0
Hi,
Just in case some people here may be wondering how to speed up the etching
process for PCB's, one way to do it is to use a bubble etcher. Basically
all you
have to do is install a perforated plastic tube in the bottom of your
etching tank and force air through it. The bubbling action constantly
agitates the etchant and thus greatly speeds up the etching process. I'm
using some aquarium tubing with small holes drilled in it and I use an
airbrush compressor as an air source in my small tank. For a larger tank
you can use 1/2" ABS pipe and the exhaust of a canister style vacuum cleaner
such as a Shop Vac for an air source. You should use an adjustable valve in
the air line to regulate the flow so as not to spray etchant all over the
place. In this type of tank the circuit board must be hung vertically in
the etchant.
Heating the etchant is also recommended.
Have a good day.
Rod
Just in case some people here may be wondering how to speed up the etching
process for PCB's, one way to do it is to use a bubble etcher. Basically
all you
have to do is install a perforated plastic tube in the bottom of your
etching tank and force air through it. The bubbling action constantly
agitates the etchant and thus greatly speeds up the etching process. I'm
using some aquarium tubing with small holes drilled in it and I use an
airbrush compressor as an air source in my small tank. For a larger tank
you can use 1/2" ABS pipe and the exhaust of a canister style vacuum cleaner
such as a Shop Vac for an air source. You should use an adjustable valve in
the air line to regulate the flow so as not to spray etchant all over the
place. In this type of tank the circuit board must be hung vertically in
the etchant.
Heating the etchant is also recommended.
Have a good day.
Rod