Re: Seems like we moved + pcb fab idea.
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We’re not dealing with thousands of watts like the ‘experts’ who always chime in think we are, you don’t need much power to burn off paint.? Like the earlier link said he only used 2 watts. ? The beam will scatter somewhat (it’s painted copper after all), plus defocus going through the lens, and it’s a long back to the tube through the mirrors.? It’s not going to have much power left after that. ? For the equipment we’re using it’s a non-issue.? I’m sure someone has a friend of friend who heard about it… ? It obviously works, I really should try it. ? Tony ? ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of David Lyon
Sent: Thursday, 7 June 2018 5:52 PM
To: [email protected]
Subject: Re: [homebrewpcbs] Seems like we moved + pcb fab idea.? Alter the angle of the laser to fire at 15-degrees so that it doesn't shoot back on itself.? ? ? ? On Thu., 7 Jun. 2018, 08:18 anode505 via Groups.Io, <anode505=[email protected]> wrote: Still wouldn't use a CO2.? Back reflections are the issue. Ever see a resonator after the beam goes back into it? That happens at the pierce or etching (which is what you are doing).? Once the cut starts its typically OK (unless you lose the cut)
CO2 & copper is a gamble I wouldn't take.
But for that application I'd just get a like a 5w-7W LED and roll.
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