Cool Tubes

[pipeman]

you can get the bake a round tubes delivered from the US for about $50 and full cooltube kits including the fittings and lamp holder are being sold for $90 so if this is what it costs to buy the pyrex tube from a glassmaker then its not a real smart way to go

[Gazza2001au]

seen someone in VIC sell a back-a-round on ebay the other day think it went for $7-$10 something like that

[Guest niall]

What diamater are bake-a-round though? 150mm was to cover both MH and large HPS lamps, if you've got a skinny HPS you could get away with a smaller diamater tube.

 

And fuck me those prices I quoted above were for 2 lengths of 150mm tubing, sorry about that - so halve all of those figures.

[Gazza2001au]

120mm for the 400-600w 150mm for the 1000w is decent size doubt u would want to run a 400w MH in the 1000watter cool tube so just use the HPS to MH conversion lamps Edited July 17, 2006 by Gazza2001au

[merlin2004]

[at

tachment=15459:attachment]How to make a cool tube..................

 

I'll post a full tutorial tomorrow with pics step by step. (takes a little time to compile)

 

Here's pics of the existing and the one I put together today.

 

Also my variable filter system.

 

More pice and a full explanation in tutorial tomorrow.

[Ozzy420]

Looking foward to ya tutorial on this mate.

 

Ya pics are a bit rough but you still can still see what they look like...

[merlin2004]

I know they're a bit small

I wanted to fit them all on one post but I can up the quality about 6x for the tutorial.

[Luke Skywalker]

Try using a prog called irfanview. You can adjust the quality of the copies but still keep the size, or maintain high quality and reduce sizes, or variants inbetween.

 

I'll be most interested to see this coming.

[maxgrow]

What size tubes do you guys need, I'm thinking of ordering in some 40-50mm diamater pyrex of about 4-7mm thickness. Meerkat might be able to make some up too. I guess you'd be after 60-90mm? Just HPS right?

 

 

I've tried getting 100-150mm in Australia and the only way to get any decent glass tubing is from chemical lab suppliers and it is only available in 1 metre mimimum lengths and is very exspensive. And I dare you to get it to your door - unbroken !

 

Good luck - I have already looked at a commercial venture of building cool tubes here for the Aussie market.

 

All I can say is good luck and I hope it works out for you.

[Guest niall]

It's not all that expensive actually, in another thread I posted that Schott boro tubes of 150mm diamater, 5mm thickness, 1.5m length costs $215. They come in boxes of 2, so you're looking at $430 plus shipping to make about 10 tubes of 30cm. That works out to $43 per cooltube, plus shipping and lampworking to cut them to size, plus annealing in a kiln. It sounds like there's a definite market for this, if I had my torch already I'd be making them now believe me. It's not a bad excuse to get a cheap torch actually, just have to rent kiln space... Hmmm