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Thread: Cutting sheet at 45 degrees? Fixture?

  1. #76
    Join Date
    Mar 2011
    Location
    Anaheim, Ca
    Posts
    908
    Just my two cents but would you not end up engraving on the mirror at this point being the beam is no changed and set to a focus I would only assume it will etch the mirror
    Craig Matheny
    Anaheim, Ca
    45 watt Epilog Laser, 60 watt Epilog Laser,
    Plasma Cutter, MiG Welder
    Rikon 70-100 Lathe
    Shop Smith V510, To many hand Tools and
    Universal Repair Kit (1- Hammer and 1- Roll of Duck Tape)

  2. #77
    Nope, the surface is too reflective, cutting or engraving relies on the material absorbing some of the radiated power at above it's yield point.

    cheers

    Dave
    You did what !

  3. #78
    Join Date
    May 2014
    Location
    Auckland,New Zealand
    Posts
    308
    Yes, the mirror coating would get damaged "if" I was working at the focal point. But I am work where it is half way to being focused. Also the mirror is silicon, so if the mirror surface failed it is likely that the mirror would crack or shatter.

    Cheers
    Keith
    Last edited by Keith Colson; 11-26-2014 at 1:55 PM. Reason: typo
    Universal Laser VLS6.60, Tantillus 3D printer, Electronic design
    edns Group, Mairangi Bay, Auckland, New Zealand

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