Guest
.... bleach?
I went to my son's science faire yesterday, and was impressed with one
exhibit - "Cleaning Pennies". The girl who did the experiment
mentioned that salt water cleaned her pennies the best, and the bleach
turned her pennies "a blue-green color".
Ah.
I was looking into ferric chloride... ammonium persulfate...
hydrochloric acid plus hydrogen peroxide, for etching my first circuit
board... but never thought of bleach... cheap, simple, relatively less
toxic (can legally be poured down the drains!), readily available.
Of course, the blue-green Cu2+ ions may need to be scrubbed off the
circuit board... not sure how fast the reaction is - maybe it will
need to sit for a few days.
Would it damage the glue binding the board to the copper? Would it
happily eat the ironed-on black protective ink covering the WANTED
copper traces?
Michael
I went to my son's science faire yesterday, and was impressed with one
exhibit - "Cleaning Pennies". The girl who did the experiment
mentioned that salt water cleaned her pennies the best, and the bleach
turned her pennies "a blue-green color".
Ah.
I was looking into ferric chloride... ammonium persulfate...
hydrochloric acid plus hydrogen peroxide, for etching my first circuit
board... but never thought of bleach... cheap, simple, relatively less
toxic (can legally be poured down the drains!), readily available.
Of course, the blue-green Cu2+ ions may need to be scrubbed off the
circuit board... not sure how fast the reaction is - maybe it will
need to sit for a few days.
Would it damage the glue binding the board to the copper? Would it
happily eat the ironed-on black protective ink covering the WANTED
copper traces?
Michael