Eclectic
National Hazard
Posts: 899
Registered: 14-11-2004
Member Is Offline
Mood: Obsessive
|
|
Quartz Tubes on Ebay
Look good for DIY tube furnace:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=22010...
|
|
|
Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
|
|
That's not a bad price. Do you happen to know the upper temperature limit for quartz?
The single most important condition for a successful synthesis is good mixing - Nicodem
|
|
|
Eclectic
National Hazard
Posts: 899
Registered: 14-11-2004
Member Is Offline
Mood: Obsessive
|
|
1200 C
|
|
|
vulture
Forum Gatekeeper
Posts: 3330
Registered: 25-5-2002
Location: France
Member Is Offline
Mood: No Mood
|
|
You need a working temperature, though. Doesn't quarz become soft at 1200C?
One shouldn't accept or resort to the mutilation of science to appease the mentally impaired.
|
|
|
Eclectic
National Hazard
Posts: 899
Registered: 14-11-2004
Member Is Offline
Mood: Obsessive
|
|
That's what Quartztech gives as the maximum USE temperature.
So as long as you use Nichrome or Kanthal heating elements, you probably don't have to worry about the tube deforming.
You might need to use oxy-acetylene and graphite formers to work the ends though...
|
|
|
Fleaker
International Hazard
Posts: 1252
Registered: 19-6-2005
Member Is Offline
Mood: nucleophilic
|
|
I know it doesn't fuse till 1700C. I bet it can be used higher than 1200C too. I'd check to make sure it's really quartz, not some other high temp
glass spin-off, like Vycor.
Neither flask nor beaker.
"Kid, you don't even know just what you don't know. "
--The Dark Lord Sauron
|
|
|
Waffles
Hazard to Others
Posts: 196
Registered: 1-10-2006
Member Is Offline
Mood: No Mood
|
|
| Quote: | Originally posted by Eclectic
That's what Quartztech gives as the maximum USE temperature.
So as long as you use Nichrome or Kanthal heating elements, you probably don't have to worry about the tube deforming.
You might need to use oxy-acetylene and graphite formers to work the ends though... |
Graphite certainly helps forming, but you CAN work quartz with any oxyflame. I prefere oxy-MAPP because you get a lot more BTUs in a more diffuse
flame than oxyacetylene, which is good for quartz. Also, oxyacetylene is dirtier, all sorts of hydrocarbons and crap spewing out of there- just about
any application where oxyacetylene is preferable to oxy-MAPP, oxyhydrogen is preferable to oxyacetylene, if that makes sense.
Oxyhydrogen is great, you feel like the god of flame when you can suddenly melt anything (and I really mean just about anything)...
\"…\'tis man\'s perdition to be safe, when for the truth he ought to die.\"
|
|
|
alancj
Hazard to Self
Posts: 76
Registered: 16-6-2006
Member Is Offline
Mood: No Mood
|
|
I got one.
23.5 inches, the wall has a kind of wavy shape to it. The tube itself is straight, but if you draw your hand across it you can definitely feel "rings"
of a wider narrower wider narrower pattern. I don’t think it would be a problem.
Not sure what I'll do with it yet, but they are cheap...
A few scuff marks and needs a good cleaning with a long brush and soap. I got it pretty quick and in one piece, so I'm happy with the purchase!
-Alan
|
|
|
alancj
Hazard to Self
Posts: 76
Registered: 16-6-2006
Member Is Offline
Mood: No Mood
|
|
You can sort of see the wavy diameter in this picture.
|
|
|
Organikum
resurrected
Posts: 2329
Registered: 12-10-2002
Location: Europe
Member Is Offline
Mood: busy and in love
|
|
I had tubes from an electric radiation heaters liberated from a trashbin and they were for free and worked just fine. The nice thing was they came
with the heating wire which I just pulled from the inside and wrapped around the the outside. Shortening them a bit and employing a dimmer made them
hotter and covering them with some homemade furnace cement (mainly consisting of magnesium oxide IIRC, recipe pulled from some ancient inorganic
chemistry textbook) made them resistant against excessive oxidation by the oxygen in the air. Never had one burn out.
Just as an idea how to make this cheap in special if you live somewhere where a lot of useful things get thrown away. As in Germany. Now I am living
in an east european country where the people historically are professional dumpster divers. How I miss the german trash, sigh... 
|
|
|
Texium
|
Thread Moved
19-11-2023 at 11:59 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
