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Anonymous
>>206412
Depends on what country you live in. The copper is actually PCB (printed circuit board, normally the green things in computers) stock. It costs about $1 per 10x16cm sheet in tiny quantities, drops quickly as you buy more.
In the UK: www.rapidonline.com code 34-0860 In the US: www.mouser.com code 590-506
Then you print them onto a transparency (generallly you can pick these up in Staples or similar, get laser ones) using your laser printer in black and white. Cut out your image with a bit of a border. Get out the ironing board and iron, place a piece of tissue paper on the ironing board, place the copper board on top of that, place the transparency on top of that and tape it down at the edges. Place another piece of tissue paper over the top and iron it for about 5 minutes at the second-highest temperature (generally).
Then dump the board and tissue and transparency into cold water and peel off the transparency while still in the water.
It should hold up to any temperature until it's about as hot as the iron, at which point it'l probably smear if you try (but when's it gonna get that hot?) Moisure should be fine, and it can get wet without problem, but leaving it in high humidity may let the copper separate from the base.
As for kids, while they won't be able to smear the toner off, the copper does pick up fingerprints - it can be cleaned, but the best bet would be to protect it somehow.
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