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Where can I get a tiny piece of glass?

  1. Nov 10, 2008 #1

    matthyaouw

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    Odd request time!
    I need a tiny piece of clear glass, 12mm by 11mm and about 2mm thick. Does anyone know where I might be able to get one? I am trying to think of places that use thin glass for other things, but am not having much luck

    edit- maybe a picture framer's shop...
     
  2. jcsd
  3. Nov 10, 2008 #2

    Evo

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    Buy a tiny picture frame? You can get a scribe to cut glass for cheap at a hobby shop, which might also have the glass that you need.
     
  4. Nov 10, 2008 #3

    turbo

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    Scribe and snap a microscope slide.
     
  5. Nov 10, 2008 #4
    Bingo
     
  6. Nov 10, 2008 #5

    mgb_phys

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    I immediately thought of microscope slides and then wondered if there was anywhere you (or atleast anyone without a SigmaAldritch account) could still buy them without being listed as a potential bioterrorist.

    Years ago I needed to build a laser trap froma stack of razor blades and discoved that they are almost impossible to get, as are proper metal scalpels.
     
  7. Nov 10, 2008 #6

    matthyaouw

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    Good ideas! I think I have a couple of slides kicking around somewhere from my sedimentology classes. I'll have to go see how thick they are and get my hands on a scribe from somewhere. Thanks!
     
  8. Nov 10, 2008 #7

    mgb_phys

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    Standard microscope slides are 1.0mm, 'thick' versions are 1.2mm
    The thickness isn't that important for the optical performance so the mtolerence is normally only +- 0.1mm os so.

    They snap pretty weel, you can do it with any steel tool, you probably don't need a diamond scribing wheel.
    Wear gloves+goggles or cover it with a cloth until you get the hang of it!
     
  9. Nov 10, 2008 #8

    matthyaouw

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    My slides should be perfect, but I think I'll need to glue two together. The stuff I've seen recommended (Eukitt) is $70 a bottle. Can anyone recommend a cheaper option? It's xylenes & acrylic resin. I don't know what I really need, except it has to be clear and shouldn't distort light. The glass is going in front of a camera sensor.
     
  10. Nov 10, 2008 #9

    mgb_phys

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    That depends on how much distortion you can tolerate - whcih depend son the angl eof the beam and the image quality.
    But with a very thin gap between clean flat slides you can use almost anything that completely fills the space (ie no air bubbles) supeglue is probably the first thing I would try if you want it to be permanent.
     
  11. Nov 10, 2008 #10

    Evo

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    Did you check out just buying the glass for $1-2 dollars at the hobby shop? If you use glue, there will be some distortion, just buy it the right thickness to begin with, then get a cheap scribe for a few bucks. It's just a blade that scores the glass, then a light tap and it's a smooth cut. I used to do it all of the time.

    http://www.technologylk.com/product...onal-Heavy-Duty-Diamond-Tip-Glass-Cutter.html

    How to cut glass

    http://www.abacaglass.com/how_to_cut_glass.htm

    Some more tips.

    http://ghonis2.ho8.com/rebelmod.html
     
    Last edited: Nov 10, 2008
  12. Nov 10, 2008 #11

    Moonbear

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    Hmm...let's see. Find a display case or window with the right thickness of glass, get a large rock...:uhh: Oh, that's probably not the best approach.

    You're going to get a lot of distortion trying to glue two slides together. I don't recommend it.

    For such a tiny piece, a shop that sells glass could probably provide a piece that size from just scraps left from other jobs.
     
  13. Nov 10, 2008 #12
    check out a lowes or home depot. they may have glass and a cutter.
     
  14. Nov 10, 2008 #13

    Moonbear

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    They might even have some broken glass in the back that they'd be willing to give away. (Or at least whatever the UK equivalent of those stores is.)
     
  15. Nov 10, 2008 #14
    I don't know if this works... But I heard that you can cut glass with scissors if you do it underwater. It is supposed to damp the supersonic vibrations caused by the cutting.
     
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