Re: Fires

by adafruit on Fri Jun 26, 2009 10:34 pm

westfw wrote:@ladyada: watching it keeps it from catching on fire? :-)


umm, yes. you watch it and the moment you see it start to flare you open it and put out the fire
if you aren't there watching it, the entire thing can catch on fire within 30 seconds
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Re: Fires

by westfw on Fri Jun 26, 2009 11:24 pm

They're showing up all over in community "maker spaces", and even schools. Maybe one will be near you soon! ($100/month membership is a lot more palatable than $20,000 or so. Of course, you'd have to share...)
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Re: Fires

by jbrandt01 on Sat Jun 27, 2009 2:45 am

If all you want to cut is paper, you can spend waaaaaaay less than $20k and make one yourself.

My setup is made from a banned DPSS in a banned axiz housing (clamped into a big aluminum block) that stays stationary and the table is a cross-slide vise (X,Y) from harbor freight that has the handles replaced with hobby servos that have had the pots removed and replaced with linear ones. Its driven by an arduino using the regular servo libs. Another pin flips a SSR which turns the laser on and off for blanking. Sadly I have yet to get around to writing actual useful software. The only things I've actually engraved were done by just figuring out how many 'degrees' of rotation in what order to make some pretty basic patterns. Interfacing it with processing is my next goal.

Lasers are freakin' cool, I'm really disappointed that my argon-ion is on its way out. I can't really afford to get it recharged so I think I am going to have to unload it and my PCAOM. Thankfully diode lasers are dropping in price and increasing in quality very rapidly.
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