Electronics > Projects, Designs, and Technical Stuff
[Recommendations]How much power do I need to laser cut copper
T3sl4co1l:
--- Quote from: blueskull on February 10, 2016, 06:39:33 am ---My process is to plate copper on ceramic, then either laser cut copper, or just use H2O2/HCL to etch copper.
Since there is no chemical that etches ceramic, I definitely need laser to cut thin ceramic sheet.
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Gnaw, tons of things. Nothing is impervious*!
(*Teflon comes damn close, but of course burns at relatively modest temperatures, and can be attacked by strong bases. For everything else, there's always a stronger superacid.)
There may even be chemicals that etch the ceramic without touching the copper. As I recall, copper is resistant to fluorine, though not fluoride so that might be rather difficult. The metal can be coated with something else resistant, temporarily; which is done with normal PCBs (tin flash protects during an etch step).
Most likely candidates being hydrofluoric acid and relatives, for most anything on the aluminosilicate spectrum.
Tim
timb:
--- Quote from: blueskull on February 11, 2016, 10:44:18 pm ---I physically locate in the US, specifically North Carolina, which is bad because unlike CA or NY, here it is not easy to get cheap or free dumpster dived goodies.
I think I need to learn more about laser, when I have time. Anyway, laser is just an easy way to get my research jobs done, not anything essential.
I have traditional ways to do it, it just take more time and paper works since we have to borrow the other labs' gears.
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You can get some pretty rad gear dumpster diving around the Research Triangle. Also check Craigslist (and put an ad up saying what you're after). I've had really good luck doing that.
If you don't mind a short drive up to Virginia, NASA Langley auctions stuff off every so often. There's also DRMO auctions in Norfolk and Richmond.
rickey1990:
my plasma cutter comment is officially deleted. Americans and there imperial measuring system, I fort you meant 4 millimetres :palm:
Fungus:
--- Quote from: T3sl4co1l on February 11, 2016, 11:15:08 pm ---Most likely candidates being hydrofluoric acid and relatives, for most anything on the aluminosilicate spectrum.
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I'd pay to get it cut professionally looong before I'd start messing about with hydrofluoric acid.
"Bottled Evil" doesn't come close to describing that stuff.
timb:
--- Quote from: blueskull on February 12, 2016, 02:12:15 am ---
--- Quote from: timb on February 12, 2016, 12:06:33 am ---You can get some pretty rad gear dumpster diving around the Research Triangle. Also check Craigslist (and put an ad up saying what you're after). I've had really good luck doing that.
If you don't mind a short drive up to Virginia, NASA Langley auctions stuff off every so often. There's also DRMO auctions in Norfolk and Richmond.
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I'll try my luck there and take an eye on RTP news. It is hard to check too often since I am still ~40 miles away from there.
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If you send me a PM with your email and maybe a list of stuff you're after, I'll keep my eyes peeled for you.
I actually came across a laser cutter at a DRMO auction last year. It went for like $100. Looked like a nice unit, too. Unfortunately I didn't have anywhere to store it at the time. (I occasionally see some high end laser stuff, but I don't know much about it, so I don't feel like I can fairly asses it for resale.)
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