Etcher - Sticker Shock

I scraped it together for ~ $40, but I already had a lot of the parts.

Its a black box with some didleyboos sticking out.

I use a q-tip for the pad, and salt water for the solution.
 
Mereckons one should be able to get one built for $5. That's right. All you need are 2 voltages: AC and DC. DC etches the depth, AC deposits black.

So, next time you're at a flea market, pick up (they sell them for $1 most of the time) 2 "charger" power supplies - 12VDC and say 12VAC.

All you need now is a DPDT switch On-Off-On. To the 2 contacts in the iddle you attach 2 wires - one goes to the blade, another one to the pad.

To the "top" pair of contacts on the switch you attach 2 wires from AC power supply. To the bottom pair - 2 wires from DC power supply. Done .

If you want to get fancy, fashion a shoebox enclosure. Add a fuse.

To operate, flip the switch to DC and get some depth. Then flip to AC and deposit some black.
 
Yep, building one is the way to go. Do the Chris Crawford one. I built one a week ago and it is awesome! Got all the stuff at Radio Shack and built it in 3 hours, including the trip to the Radio Shack. A real simple project.
 
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