Laser cutter

My dad has an old plotter that I plan on converting into a laser cutter, and I was wondering how powerful the laser needs to be in order to cut thin metal (its ok if it can do it in multiple passes). Where could I get a cheap one? Thanks LinuxH4x0r

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Holi laser cutting Machine / Y Z X Problimes Help me

How about starting a new topic and explain the problems your having.

-Cry_Wolf9 years ago
if you want a co2 burning laser, head on over to information unlimited at they got all kinds of aesome tech stuff including co2 lasers (but im afraid that they are too big for your plotter)
LinuxH4x0r (author)  -Cry_Wolf9 years ago
It doesn't matter, I'll use fiber optics to make it work (or maybe mirrors)
trebuchet039 years ago
The laser at instructables HQ is 35watts - just FYI...

Here's a water cooled 35W diode on eBay for relatively cheap ($300) eBay -- nice in that it doesn't require kV to start - just 24V...
only 35 watts? Can that cut sheet metal? I know 35 watts is nothing to laugh at, but I've been seeing watts in the 100's for cutting sheet metal It doesn't require HV because it's a laser diode, not like a co2 laser. I like diodes better because they don't require gas and they take less energy.
I don't know if it will cut sheet metal... Methinks no (maybe super thin metal?)... Metals can be tricky - especially if they have reflective properties.... That being said - the machine's bed was well engraved :)
LinuxH4x0r (author)  trebuchet039 years ago
At that price I'll stick to cnc. Maybe I'll make a laser cutter after I graduate and get a job that pays a lot. Damn! I was hoping there would be some in the $100 range.
guyfrom7up9 years ago
no! no! I'm starting to hate kipkay! Ever since he posted those crappy laser instructables all you come up on google for laser info is him! He gives the worst advice possable! Hooking up a laser diode directly up to a battery, BAD IDEA! Hooking up a laser diode with a resistor between the battery STILL PRETTY BAD IDEA! If you want a real laser power supply that won't kill your diodes, check out A power supply for most hobby lasers only cost like 2 dollars to make. Checkout the experiments and modifications section at laser pointer forums
He's got a "ha ha - it still works" type of attitude.... It will get him far :)
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