Cutting glass globes

Discussion in 'Fettlers Master Class' started by phaedrus42, Mar 8, 2016.

  1. phaedrus42

    phaedrus42 Subscriber

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    I have quite a few cut globes in regular use for some years now and not one has cracked yet. You can sand down the cut edge with 100 grit sandpaper and water on a flat surface. If you have an oxy-acetylene torch, you can flame polish the cut edge by rotating the globe on a turn-table and gradually heating up the edge with a soft flame until it just starts to melt.
     
  2. ColinG

    ColinG United Kingdom Subscriber

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    That's exactly what I want to do!
     
  3. scl

    scl Subscriber

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    i will have to look more into this.
     
  4. Tony Press

    Tony Press Australia Subscriber

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    Yesterday, I made a hole in a Coleman glass (for practice). :lol:

    I have a badly cracked Coleman glass (chimney) that I wanted to practice glass cutting on.

    I recently bought a hole-cutter for making holes in glass.

    D875EC8D-949A-4DE6-9D7F-A7F17E70022B.jpeg

    I drilled the hole with plenty of water. It was tricky getting the hole started. You can see the scratches from the drill slipping in this photo:

    256B1C1C-AC73-47E6-B1A5-D5B95015668E.jpeg

    I then used a MAPP torch to soften the glass around the hole:

    86605DF0-EB21-499E-ADE7-85A779114AA6.jpeg

    14F19209-5622-4387-8E7B-576024BEEB83.jpeg

    I’m quite pleased with the result. Mind you, I won’t be trying this on an irreplaceable glass.

    Cheers

    Tony
     
  5. ROBBO55

    ROBBO55 Subscriber

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    @Tony Press

    Tony, did you use a hand held drill or use a drill press?
    Nice first hole. :thumbup:
     
  6. David Shouksmith

    David Shouksmith United Kingdom Founder Member

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    Yes, Willis & Bates gave up drilling holes in Vapalux glass globes way back in the 1940s. Apparently, far too many broke and it wasn't economically viable - especially when the solution was simply to have the globes made slightly shorter so they could be lifted within the globe cage to allow priming and lighting.

    Good effort, Tony... :thumbup: :clap:
     
  7. Tony Press

    Tony Press Australia Subscriber

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    Thanks, David.

    @ROBBO55

    I used a battery operated hand held Ryobi 2-speed drill as it was it had lower RPM than my drill press. I’ll try the drill press next on this broken glass.

    Cheers

    Tony
     
  8. WimVe

    WimVe Subscriber

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    As for a hole : would heating the globe up and punching a hole through not be a better way ?
     
  9. ROBBO55

    ROBBO55 Subscriber

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    @Tony Press

    Tony, you did very well to drill the hole by hand and not shatter the glass. :thumbup:
    A drill press should significantly reduce the scratching. Slow and steady without a lot of pressure.
     
  10. Tony Press

    Tony Press Australia Subscriber

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