Hello Adam,
Friday, April 19, 2002, 5:04:15 AM, you wrote:
AS> Has anyone out there done copper etching with ammonia
AS> hydroxide and copper sulfate solution ? I'm interested in
AS> learning new ways of making the ammonical etching tank for
AS> hobbyist. Currently I have a working etching tank based on
AS> this chemistry. The major problem witht his type of etchant
AS> is ammonia fumes. The way I solved this was to build a
AS> sealed tank and have a slotted opening on the lid for
AS> inserting the PCB. When the tank is not in use the slot is
AS> sealed with a rubber strip leaving the tank almost air
AS> tight. I would like to here what others have done.
AS> Adam S
AS> To unsubscribe from this group, send an email to:
AS>
Homebrew_PCBs-unsubscribe@yahoogroups.com AS> Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/ And I replied:
Why ammonia? For homemade PCB's good results can be achieved using
combination of CuCl and HCl. No fumes and can be bubble assisted.
--
Best Regards,
Zoran
mailto:
zasto@...