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Thread: Pooo's and Weeees F@#k it !

  1. #1
    Join Date
    Mar 2007
    Location
    Rotorua New Zealand
    Posts
    528

    Unhappy Pooo's and Weeees F@#k it !

    Guess what.. Having read at some length the dangers of back reflection killing diodes I was being very careful.
    I had mounted the Maxy reds onto the board.

    Due to the bowed (banana) shape of the Maxy base plate I needed to tighten it down while turned on. (to flatten it out a bit)

    There I was smoke on, leaning around the back on the bench started to tighten. Being very careful all the time to avoid the beam.

    Horror !! there was my screwdriver in slow motion falling gracefully through the air with the greatest of ease !!! it tumbled twice and hit the floor.
    I grimaced... did it hit anything ?? on route ??. oh crap !

    I now have a Y galvo with a 45 deg angled mirror (not broken but bent the shaft) .. possibly good for special effects. (vibration included)

    The only one smiling now is Jian !!! another sale !!

    As they say down here in NZ..... Buggar !!

    Good news the reds are fine.

    If Jian had just left the little heatsink on top like his earlier DT-40's that would have protected it. Could be worth thinking about putting a little "lid" over those mirror they are very exposed to this sort of idiotic behaviour.

    Oh well these things do happen...
    Cheers
    Ray

  2. #2
    Join Date
    May 2006
    Location
    Norway, Fauske
    Posts
    1,206

    Default

    Thats bad! Lucky for jian tho (hehe)
    well..shit happends!

    Pangolin FB3 QS/LivePro/SMS2Laser
    Riya MultiBus
    Pangolin LD2000 Pro

  3. #3
    Join Date
    Oct 2006
    Location
    Central Florida
    Posts
    7,067

    Exclamation

    Dude, that is one hell of a screwdriver...



    We need both, one of the driver and the bend shaft... Maybe you can send it back and hae the shaft replaced... You have my sympathy on the loss.
    Love, peace, and grease,

    allthat... aka: aaron@pangolin

  4. #4
    Join Date
    Jan 2007
    Location
    Sheepsville, Wales, UK
    Posts
    3,396

    Default

    Bummer Ray
    Sorry to hear of your misfortune. I find sometimes being too careful promotes disastar!

    Quote Originally Posted by Pitts View Post
    Could be worth thinking about putting a little "lid" over those mirror they are very exposed to this sort of idiotic behaviour.
    Do you mean like this....(see below) I did this to catch the stray light that comes out or the back of the Dielectric mirrors but it would protect against screwdrivers too.

    Rob
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  5. #5
    Join Date
    Jan 2007
    Location
    Florida
    Posts
    4,382

    Default

    I'm thinking of painting all of my screwdrivers flat-black!!
    I killed 2 D.I. lasers with back-reflection. I've heard about freq-doubled DPSS reds...if they can make cheap greens...they can't make dpss reds

  6. #6
    Join Date
    Mar 2007
    Location
    Rotorua New Zealand
    Posts
    528

    Default

    Hi Rob,

    Exactly like that. Jian's original design did this in effect by having a heatsink on top this acts just like your "shield" . I like what you have done I think this would be a prudent step against idiots like me with screwdrivers.

    Thanks for the demo--- well done.

    Ray

  7. #7
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,489,071

    Cool

    Quote Originally Posted by steve-o View Post
    I've heard about freq-doubled DPSS reds...if they can make cheap greens...they can't make dpss reds
    They can (and do) make them. But they have issues:

    1) They're expensive
    2) They lase at 671 nm, which is really on the low end of what the human eye can see, so you need a lot more of it.

    Still, they do sell them, and the beam quality is excellent. LaserShowParts.com has them listed all the way to 4.5 watts, if you've got the coin...

    Adam

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