Cool Tubes

[jaguarrh]

sorry to be a wet blanket but it seems that cooltubes are now available over the counter quite easy.

 

they have them in HAP for $80 i think (fully equiped with mogul socket, suspension points, and australian plug)

 

the other hydro shop near to me also had one the other day, (same make as HAP) and he said i could have it for $70

 

so it seems to me that they are commercially available at a lower cost than they can be made for???

 

i believe these models are coming through accent hydroponics in sydney, i don't know if there are any pics of them on their site?

 

[pipeman]

yeah man its already been said leave niall alone he likes to dream about little projects like this.

[Chato]

i buy my glass from a medical supplies stores, basically a big jar which i cut the bottom off. costs around $15 from memory. (Not in Oz though)

 

think Musha may have a source for glass now but not 100% on that.

 

peace

c

[merlin2004]

Read my thread.....how to make a cool tube...$28 in oz for the glass vase ....150mmx530mm

 

 

Merlin

[Guest niall]

sorry to be a wet blanket but it seems that cooltubes are now available over the counter quite easy.

 

Good news then. Those prices are very cheap, so I'd personally want to know what type of glass they're using - how heat resistant is it, e.g. if your fan died, thickness etc. The Schott boro I quoted is fucking thick, heat resistant borosilicate glass - the same pyrex used for bongs but thicker (2-3mm usually).

[pipeman]

the glass of the actual bulb isn't borosilicate glass (why can't you just say pyrex like everyone else niall ) so I can't see why the tube would need to be. Actually this is a guess, I don't know for a fact bulb glass isn't pyrex, but I'd be surprised if it was.

 

Any temp change from a fan failure would be gradual and I'd be surprised if it made any type of glass crack. Remember even if the fan fails there is still a path for the hot air to escape.

 

Also, the thicker the glass the less efficient use you will get from your light

[Chato]

i've used vases and they are quite susecptible to cracks but that's runnin 1000w. lookin at merlins pics though that glass seems pretty thick and should work no worries even with a 1000. biggest prob is small cracks when cuttin the glass which often leads to bigger cracks.

 

peace

c

[loylty gets u nothing]

hello

here is the pyrex tube i got from ebay

i think it cost 16 aud and then a 30$ delivery from the states

ive been unable to source any australian glass

 

noe i gotta get motivated to construct

ive had glass 4 1 week and aint done squat.

if i dont get motivated by next week i think i will end up selling it

 

peace

bpa

[Gazza2001au]

bill u should be able to use a vertical lamp holder the type used for chinamans hats just bend both the lamp holders mounts out flat slid it up against one end of the tube bend the mounts around the sides of the glass clamp it down hook the ducting to the other end

[Guest niall]

the glass of the actual bulb isn't borosilicate glass so I can't see why the tube would need to be.

 

It doesn't, I didn't say it did, what I said was that you would want something heat resistant like boro.

 

Secondly, bulbs are designed for this purpose - any old glass is not. Boro is. Thirdly, pressure.

 

(why can't you just say pyrex like everyone else niall )

 

Cos pyrex is boro, boro isn't pyrex. Pyrex is a trademarked brand name, the glass itself is called borosilicate.

 

Any temp change from a fan failure would be gradual and I'd be surprised if it made any type of glass crack. Remember even if the fan fails there is still a path for the hot air to escape.

 

Depends on your ambient, thickness of the glass, proximity to the glass, airflow.. It would be relatively gradual, e.g. compared to an explosion, but not necessarily gradual.

 

Also, the thicker the glass the less efficient use you will get from your light

 

Sure, but that's why you want to weigh up all of the variables, not just one. Efficiency is important, but at the cost of volatile explosions in a confined space, close to electricals, dangerous pressurised gases....? Up to you mate, I'm just providing information and costs in case someone finds it useful.