Glas cutter?

Discussion in 'Fettling Forum' started by tretrop, Apr 24, 2020.

  1. tretrop

    tretrop Sweden Subscriber

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    Could this be of use?
    Cutter
     
  2. BigStevie

    BigStevie United Kingdom Subscriber

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    I’ve never tried globe cutting, the tool does look like it could be useful...
     
  3. X246A

    X246A United Kingdom Subscriber

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    @tretrop

    Could be useful on modern glass. Someone on this forum cuts cafetière glasses down for their lanterns. I forget exactly who, but it may have been @ColinG. Thanks for the link.

    Regards Jeremy
     
  4. Blueflame Canada

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    I see that one use is making drinking glasses from bottles. Is the cut edge sharp enough to cut you?
     
  5. ColinG

    ColinG United Kingdom Subscriber

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    Yes Jeremy, that was me! I haven't done it for a while but I'll need to again soon to finish off my scrap heap 'Southern Vectis' Bialaddin!
     
  6. X246A

    X246A United Kingdom Subscriber

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    @Blueflame

    I’m sure any cut glass would need smoothing off before drinking from it.

    Regards Jeremy
     
  7. isfuzzy

    isfuzzy Subscriber

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    I've tried cutting bottles like that, it works.
    I've tried cutting modern tempered glass globe, nothing happened.. the glass did not even crack.. :doh:
     
  8. ColinG

    ColinG United Kingdom Subscriber

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    If I need one I'll probably make my own but currently I use a pillar drill/bench press drill and a diamond wheel to cut Pyrex coffee press inserts down to size.
     
  9. george

    george United States Subscriber

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    You guys never cease to amaze me... some of the things you come up with. They say, "necessity is the Mother of invention". I believe it!:mrgreen:
     
  10. Fireexit1

    Fireexit1 United Kingdom Subscriber

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    I remember filling coke bottles with old engine oil, and then plunging a glowing red screwdriver into it. The shock change of surface tension would crack the glass at the level of the oil.
    Chris
     
  11. Jean J

    Jean J Subscriber

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    Over to you Colin!
     
  12. podbros

    podbros United Kingdom Subscriber

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    @ColinG ...I for one would like to see a short video on this subject, please? :thumbup:
     
  13. ColinG

    ColinG United Kingdom Subscriber

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    OK... I'll sort something out by I've run out of cafetiere inserts.... although I can probably use something else to demonstrate the principle.
     
  14. malcolm race

    malcolm race United Kingdom Subscriber

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    I'd be interested to see that as well Colin
     
  15. ColinG

    ColinG United Kingdom Subscriber

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    Ok... I might have something I can show you. I'll put something up tomorrow.
     
  16. ColinG

    ColinG United Kingdom Subscriber

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    Sorry it took a while, but here is my set-up for cutting down coffee press Pyrex glass liners.

    IMG_20200820_164634_0.jpg

    IMG_20200820_164641_0.jpg

    Please excuse the messy work environment but my workshop is long overdue a good clean up!

    As you can see, this particular Pyrex glass broke just as I was getting close to finishing it! It is a risky business but as these cafetiere inserts are cheap I'm not too bothered.
     
  17. Tom Pedersen

    Tom Pedersen Denmark Subscriber

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    Hey.
    Is the name of these glasses (coffee press Pyrex glass)
    Can not find them on www.
    Maybe someone has a link.
    Tom
     
  18. ColinG

    ColinG United Kingdom Subscriber

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    This is what I use... I remove the Pyrex glass from the metal or plastic and then cut it down to size.

    cafetiere-2cup-1.jpg

    upphetta-coffee-tea-maker-glass-stainless-steel__0713350_PE729456_S5.JPG

    I ask around or go to charity shops or Goodwill type outlets to get them as cheap as possible, usually between £2 - £5

    You can buy then new for as little as £6 but I like the challenge of finding them cheaply!

    Diamond cutters can be purchased cheap on eBay.
     
  19. WimVe

    WimVe Subscriber

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    I think that cutting the bottom out first will reduce the cutting vibrations whicj maybe the cause of cracking.
     
  20. ColinG

    ColinG United Kingdom Subscriber

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    You may be right! Sometimes I've only made one cut and left the pouring spout as a lighting hole!
     
  21. george

    george United States Subscriber

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    You guys never cease to amaze me... Wow! I would never have thought of doing something like this!8]:thumbup:
     
  22. malcolm race

    malcolm race United Kingdom Subscriber

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    Colin do you cut right through and then continue all round, or do you sort of score it all round gradually getting deeper until right through
     
  23. ColinG

    ColinG United Kingdom Subscriber

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    I cut round and round slowly, getting deeper with each rotation. It's slow work and it can go wrong. I need a new cutter as blut grind wheels can cause chips and make breakages more likely.
     
  24. gena88 Russian Federation

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    Чтобы при резке алмазным диском стекло не разбилось, нужно постоянно подавать небольшую струю воды на то место, где диск касается стекла. Срез получится ровным и без сколов.
     
  25. Tom Pedersen

    Tom Pedersen Denmark Subscriber

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    THANK YOU FOR THAT gena88.
    JUST A TRANSLATION OF THE ABOVE.
    To prevent the glass from breaking when cutting with a diamond disc, you need to constantly apply a small stream of water to the place where the disc touches the glass. The cut will turn out smooth and without chips.
    Tom
     
  26. ColinG

    ColinG United Kingdom Subscriber

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