Author Topic: Need some 50mm glass tube  (Read 6637 times)

Offline Ian S C

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Re: Need some 50mm glass tube
« Reply #15 on: January 29, 2014, 11:25:52 AM »
If you were in USA, there is a company called Airpot (I think), they supply glass cylinders of a number of sizes, with graphite pistons (door closers), and free samples can be obtained, these are much sort after by builders of hot air engines.  Don't know if there is an agent in NZ, could well be.   Ian S C

Offline Steam Haulage

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Re: Need some 50mm glass tube
« Reply #16 on: January 29, 2014, 07:39:56 PM »
I thoroughly endorse the use of spittle.

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

Offline derekwarner

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Re: Need some 50mm glass tube
« Reply #17 on: January 29, 2014, 08:39:10 PM »
There is a video on GOOGLE....where a guy cuts the tops off beer bottles....he wraps a piece of cotton string around the intended cut line.....soaks the string in methylated spirit & then  :Mad: .......lights the string :LittleDevil: then after say 10 seconds he lifts the bottle then turns it upside down & immerses the bottle in water  :facepalm:

I have only successfully cut 5.0 mm boiler quartz tube.........cut with a diamond powder coated 20 diameter disk in a Dremel .....followed by water cooled end face grinding against the same disk........then followed by heating the actual end of the tube to light orange via a pencil gas torch....& let cool in air

The result is that the razor smooth glass end face has lost the visual marking from the grinding ...and is now totally smooth without any fear of cutting anything..........naturally this suggests that heating to the light orange has fluidised the quartz glass......... Derek
« Last Edit: January 30, 2014, 01:13:10 AM by derekwarner_decoy »
Derek Warner - Honorary Secretary [Retired]
Illawarra Live Steamers Co-op - Australia
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fcheslop

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Re: Need some 50mm glass tube
« Reply #18 on: January 29, 2014, 08:44:41 PM »
Hi, have a look on Jan Ridders site he has a neat cutting engine
cheers

Offline Nicolas

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Re: Need some 50mm glass tube
« Reply #19 on: January 30, 2014, 04:20:02 AM »
Hi, have a look on Jan Ridders site he has a neat cutting engine
cheers

Yes, I have. I think I will make something similar :)

Offline fumopuc

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Re: Need some 50mm glass tube
« Reply #20 on: January 30, 2014, 05:48:48 AM »
Hi Nicolas, I know it is far away from NZ, but may be a help to find something similar in your area.
http://www.ebay.de/itm/6-stueck-Borosilikat-Glasrohr-50-mm-Durchmesser-500-mm-lang-/200986531304
Kind Regards
Achim

Bluechip

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Re: Need some 50mm glass tube
« Reply #21 on: January 30, 2014, 02:29:38 PM »
Hi, have a look on Jan Ridders site he has a neat cutting engine
cheers

Yes, I have. I think I will make something similar :)

Any chance of a link ??? I can't find it ....  :'(

Dave

Online Jo

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Re: Need some 50mm glass tube
« Reply #22 on: January 30, 2014, 02:36:21 PM »
Here you go Dave  ;):

http://ridders.nu/Webpaginas/pagina_glassnijder/glassnijder_frameset.htm

(Don't forget to hit the button to show the english version.)

Jo
Enjoyment is more important than achievement.

Bluechip

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Re: Need some 50mm glass tube
« Reply #23 on: January 30, 2014, 03:21:04 PM »
Here you go Dave  ;):

http://ridders.nu/Webpaginas/pagina_glassnijder/glassnijder_frameset.htm

(Don't forget to hit the button to show the english version.)

Jo

Cheers Jo  :ThumbsUp: 

I went through the L.H. sidebar and couldn't find it ... poor  :old:

Dave

Offline cfellows

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Re: Need some 50mm glass tube
« Reply #24 on: January 30, 2014, 03:31:14 PM »
I've used a wet tile saw to cut glass bottles and test tubes.  If you go slow, it works fine.

Chuck
So many projects, so little time...