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IndustryArena Forum > Laser Engraving and Cutting Machines > Laser Hardware > What material should I use to build a 450nm optical protective box?
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  1. #1
    Join Date
    Dec 2016
    Posts
    2

    Question What material should I use to build a 450nm optical protective box?

    Hello there!

    Im building a laser graving machine from a former 3D printer, and have decided to buy this head to start my quest.
    The problem Im having now is that the machine will be in a rather busy place, where lots of people walk by all the time. So, a simple pair of protective gogles wont do the trick, as I wont be the only one needing protection.
    Is there a kind of acrylic protective glass I can build a box from? I cant find it in any DIY forums. Is it really necessary to have such protection when using a 500mW laser?

    Thanks in advance for any answers.

    Best regards,
    Afonso Urbano

  2. #2

    Re: What material should I use to build a 450nm optical protective box?

    Hi there,

    It's very necessary to have protection for this range of laser gun.

    Based on the wavelength of laser light a 500mW produces, you need about 106 meters clearance distance from the point of light to avoid any eye hazard.

    You can check this chart (http://www.lasersafetyfacts.com/reso...or-LSF-v02.png)

    Stay safe and keep others safe too.

    I hope my response isn't too late by the way.

    Thanks.

  3. #3
    Join Date
    Oct 2008
    Posts
    16

    Re: What material should I use to build a 450nm optical protective box?

    Not cheap... But yes... There are a few materials for that.

    Here is a good start : https://www.lasersafetyindustries.co...ers_s/1356.htm


  4. #4
    Join Date
    Jan 2009
    Posts
    334

    Re: What material should I use to build a 450nm optical protective box?

    Quote Originally Posted by afonsurbano View Post
    Hello there!

    Im building a laser graving machine from a former 3D printer, and have decided to buy this head to start my quest.
    The problem Im having now is that the machine will be in a rather busy place, where lots of people walk by all the time. So, a simple pair of protective gogles wont do the trick, as I wont be the only one needing protection.
    Is there a kind of acrylic protective glass I can build a box from? I cant find it in any DIY forums. Is it really necessary to have such protection when using a 500mW laser?

    Thanks in advance for any answers.

    Best regards,
    Afonso Urbano

    Try this: https://jtechphotonics.com/?product=...aser-shielding
    You may also be able to find larger sheets.

    Hope this helps,

    Iron-Man

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