5:07 PM
endsofuniverse
At the usual method is to use a laser print and transfer the image, then using etchant remove the unneeded copper. It's not exactly precise unless you're really good - so I thought it might be fun to try using a laser cutter. 
At the usual method is to use a laser print and transfer the image, then using etchant remove the unneeded copper. It's not exactly precise unless you're really good - so I thought it might be fun to try using a laser cutter.
We sprayed the copper board with black spray paint and then the laser simply removed the black portions away by burning it off.
At the usual method is to use a laser print and transfer the image, then using etchant remove the unneeded copper. It's not exactly precise unless you're really good - so I thought it might be fun to try using a laser cutter.
We sprayed the copper board with black spray paint and then the laser simply removed the black portions away by burning it off.
The results were "ok" - in fact, it worked and the board worked - but we're still going to experiment more. The black spray paint isn't ideal and we're going to seek out some type of brass marking spray or something (anyone have some ideas?). Regardless, after a quick web search this appears to be the first attempt - there's also photo resist with a laser we might try, but that's for another day.
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