Desktop Mfg. Printed Circuit Boards
Software
Atomstack Laser
Spray Paint Flat Black Krylon Ultra
Alcohol
HCL Method Muriatic Acid and Hydrogen Peroxide
Wearing
gloves and goggles, simply pour 50mL of hydrogen peroxide (3%) in a
150mL measuring cup then add 25mL of muriatic acid (31.45% hydrogen
chloride). Stir this mixture with a plastic spoon for a few seconds. Remember never to add the peroxide to the acid. Instead make sure you add the acid to the peroxide.Through
trial and error I have successfully timed and etched .5 oz copper clad
boards (double and single sided) without an etching tank or heater in
less than 2 minutes. Boards smaller than 2" x 2" can take considerably
less time. I don't recommend you make an extra supply and store it,
because the moment these two chemicals combine, a reaction starts which
slowly neutralizes the solution.
Hydrogen Peroxide 30pct
Lacquer Thinner
Hand Drill Controlled
Drills
Drill Hand Held
Etching Chemicals
Ferric Chloride
Sodium Persulfate
Oil Based Shapie Set
Conductive Ink Pen
Etch Resist Pen
Copper Board
Copper Board
Staedtler
Lumocolor pens. They come is a few diferent nib sizes, the smallest of
which works quite nicely for spotting out broken tracks on resist or
drawing whole layouts. You have to be careful not to dissolve or
dislodge any toner with the nib when touching up, as can happen if you
are a bit heavy handed.
The
board needs to be spotlessly grease free too, and so any grease coming
from your fingers or hand can impare the etch, so I wear disposable
powder free gloves if doing this bit.
Don't
get suckered into paying extra for one that is sold as an etch resist
pen, just a normal Permanent (not the water based ones!) Lumocolor is
just OK.
Sodium persulfate solution is my favorite etchant, btw, because it is clear, doesn't produce any
noxious fumes when hot and working, and the byproducts (sodium sulfate and copper sulfate)
are less environmentally hazardous than ferric chloride.
JLCPCB
