just mixed the etchant for the new tank - put a small test piece in and
it worked WAY faster than the old etchant did..
you could watch it dissolving (no more than 1 minute, probably less).
I used HCL diluted to about 10% or a bit less. then i added a bit H2O2,
more
than usual but from a very old bottle i assumed not very concentrated any
more.
I did not add any cupric cloride, jsut the plain acid and H2O2.
Why is it so fast - with NO GASSING ?
i want to keep it that fast when it gets older - now i have the hydrometer
and can
check the molarity it may be better...
i will record this data for future comparision, but i am unsure if it makes
any sense to check the density if there is no copper in...
thanks for any explanation...
ST
it worked WAY faster than the old etchant did..
you could watch it dissolving (no more than 1 minute, probably less).
I used HCL diluted to about 10% or a bit less. then i added a bit H2O2,
more
than usual but from a very old bottle i assumed not very concentrated any
more.
I did not add any cupric cloride, jsut the plain acid and H2O2.
Why is it so fast - with NO GASSING ?
i want to keep it that fast when it gets older - now i have the hydrometer
and can
check the molarity it may be better...
i will record this data for future comparision, but i am unsure if it makes
any sense to check the density if there is no copper in...
thanks for any explanation...
ST