Author Topic: Need some 50mm glass tube  (Read 6499 times)

Offline Nicolas

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Need some 50mm glass tube
« on: January 28, 2014, 12:17:23 AM »
Hello,

I need some 50mm diameter glass tube for a displacement cylinder wall (for a stirling engine).

Does anybody know where I could get that from?

If I can't find glass I will have to use plastic....

Thank you for your help,

Nicolas

Offline Ian S C

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Re: Need some 50mm glass tube
« Reply #1 on: January 28, 2014, 12:04:27 PM »
Nicolas, maybe if you can find you can find a sales outlet for lab equipment, you might be able to get a suitable pyrex beaker.   Secondary School lab supplies, university.   Ian S C

Offline pgp001

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Re: Need some 50mm glass tube
« Reply #2 on: January 28, 2014, 01:00:06 PM »
What about some subtle modifications to something like a spaghetti jar ?

Phil

Offline Ian S C

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Re: Need some 50mm glass tube
« Reply #3 on: January 28, 2014, 01:27:34 PM »
Depends on how much heat Nicolas wants to put on it, not much if he's thinking of using plastic!      Ian S C

Online Jo

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Re: Need some 50mm glass tube
« Reply #4 on: January 28, 2014, 01:36:31 PM »
Sounds like a walk around a cookery shop or your local supermarket is in order. I don't think I know of any beer or wine bottles that size, but you might want to check :DrinkPint:.

How thick a wall is acceptable?

Jo
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fcheslop

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Re: Need some 50mm glass tube
« Reply #5 on: January 28, 2014, 02:31:23 PM »
As Jo mentions the cookery bit often has some very useful bit n bobs for hot air builders.I bought an air tight plastic container for£1 at an Asda (wallmart) in the UK and a spaghetti jar thingy for £2.99p thats glass   . To buy the same amount of tubing was £14.Also keep an eye in the pound shops for stainless condiments as they can be useful.
See going shopping will take on a whole new light and our lass knows why Im heading for the cookery section :lolb: I get that knowing look :Jester:
cheers

Offline Steam Haulage

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Re: Need some 50mm glass tube
« Reply #6 on: January 28, 2014, 02:33:38 PM »
I would try a laboratory glassware supplier -

http://hamiltonlabglass.com/index.html -  these are in Margate UK, they make 50mm diam glass ware so may be able to help.

and these people go up to >300mm ! http://www.johnmoncrieff.co.uk/pdfs/tubesizes.PDF again in the UK.

There may also be Lab Supply Houses in New Zealand who go up to the size you want, if not in Australia. I know Schott have a place in OZ, I would be surprised if they cannot help you, either from their own products or perhaps by recommending someone.

Jerry
Dogs look up to you, cats look down on you, pigs treat you as equal.

Online Jo

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Re: Need some 50mm glass tube
« Reply #7 on: January 28, 2014, 02:36:55 PM »
... and our lass knows why I'm heading for the cookery section :lolb: I get that knowing look :Jester:


And what reaction do you get from the shop assistance when you get your vernier out and start measuring their bits and pieces  :LittleDevil:
Jo
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fcheslop

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Re: Need some 50mm glass tube
« Reply #8 on: January 28, 2014, 02:50:36 PM »
Sorry Jo ,NO COMMENT :lolb:

Offline Marinus

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Re: Need some 50mm glass tube
« Reply #9 on: January 28, 2014, 04:40:23 PM »
Now I went and measured all the glass bottles in our house :ROFL: Wait there's still a few left :help:
Kind regards

Marinus Kruger

Offline Marinus

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Re: Need some 50mm glass tube
« Reply #10 on: January 28, 2014, 04:43:09 PM »
The closes't I found was 42mm and 62mm  :Lol:
Kind regards

Marinus Kruger

Offline Nicolas

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Re: Need some 50mm glass tube
« Reply #11 on: January 29, 2014, 02:43:57 AM »
Nicolas, maybe if you can find you can find a sales outlet for lab equipment, you might be able to get a suitable pyrex beaker.   Secondary School lab supplies, university.   Ian S C

I think I have science tomorrow so I'll have a look around the lab, hopefully I will find something :)

Offline Nicolas

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Re: Need some 50mm glass tube
« Reply #12 on: January 29, 2014, 02:46:03 AM »
The closes't I found was 42mm and 62mm  :Lol:

The closest I found was 55mm :) only problem is I made the top and bottom plate to suit a 50mm glass tube :facepalm2:

I'm going to use the 55mm to practice as I've never cut glass before.... any tips?

Thanks,

Nicolas

Offline Nicolas

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Re: Need some 50mm glass tube
« Reply #13 on: January 29, 2014, 02:47:10 AM »
... and our lass knows why I'm heading for the cookery section :lolb: I get that knowing look :Jester:


And what reaction do you get from the shop assistance when you get your vernier out and start measuring their bits and pieces  :LittleDevil:
Jo

I think I'll do that if I can't find anything in the science lab...... :Lol:

Online Steamer5

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Re: Need some 50mm glass tube
« Reply #14 on: January 29, 2014, 07:40:09 AM »
Hi Nicolas,
 Ok cutting glass tube, NOTE, I haven't done it on tube this big so it may not work!

When I was at tech, more years ago than I care to remember, we did some glass tubing work, so to cut, use a triangular file edge to score the glass. On the tubing I was using approx 12 mm you only needed to score a small section, on your size may need to score right round. Now the important bit, put some spilt on the score, wrap in cloth (to protect your hands more than one layer please) remember were the score is place your  thumbs on each side of the score push with your thumbs & pull back with the putter part of your hand,( hope this makes sense, a bit of atwisting motion).
If this makes no sense, check YouTube somebody has bound to post a how to!

Cheers Kerrin
Get excited and make something!