The Pyrex SS hybrid Wick

[perlionsmitnick]

Man I go away for a while and look what happens. Dan is up to it again. I have been dealing with my wife's death and just happened to pop on here and this was the first thread I saw. Great work Dan. It's a great day in vapeland.

One question I didn't see asked and it's probably not an issue: Do you have any leakage between the tube and the body of the atty?

 

[subsolanus]

I think the coil needs to be completely isolated from the consumed airflow for a number of reasons. Minimizing contamination of the glass window (outside of the tube) is probably the most critical. This was my stumbling block during my gedankenexperiment before I forgot about it a few months ago. If a reflector is used to enhance the radiative flux the this should also be kept clean.

Also having the coils in dead air will keep hotspots manageable.

 

[Rader2146]

Heat reflector/airflow isolator....maybe a polished SS tube that would slide over the Pyrex and coil? Would need to cut a relief for the wire to run to the posts, but it would seem 270 degree coverage would be better than nothing.

 

[Cloud Wizard]

Exciting stuff. Thanks Dan.

Just signed up at Wilmad. Does anybody understand the difference in MHz for glass? They offer tubes at 200, 300, etc.

That has to do with the resonance frequency used by an NMR (Nuclear Magnetic Resonance) depending on the strength of the magnetic field. Glass is a crystalline structure and has a physical property called its "resonant frequency". That's the frequency where it shatters like an opera singer with a wine glass. These tubes are simply tested safe for the various NMR frequencies used in the labs (different analytical methods require different frequencies depending what is being analyzed). I wouldn't think it makes any difference here, important attributes are the geometry (OD/ID) and that it has a high heat tolerance.

 

[cyclotron]

Tracking the mailman again...ugh

My mailman is all about getting me the stuff I ordered. It really bothers him to see me staring at him and mailbox with only bills in it.

 

[perlionsmitnick]

My mailman is all about getting me the stuff I ordered. It really bothers him to see me staring at him and mailbox with only bills in it.

There are stalking laws.

 

[Cm7b5]

Would this work with ss tubing?

 

[HawkeyeFLA]

Okay this has really caught my eye ... something to look at after Thanksgiving is over for sure.

Oh heh, and don't forget "Pyrex" is just a trademark name for borosilicate glass. But borosilicate glass does have silica in it ... concerns there for the anti silica crowd?

 

[the ob]

Anyone else thing this would be fantastic with the ceramic sleeving?

 

[LucidAce]

Wow, very interesting stuff. Dan, I know you already have a backlog of questions, but, and this isn't related to this concept, did you replace the isolator on your DuD? I've had issues with mine and yours looks like it's black, so I was wondering if it is just discolored or if you replaced the stock one with something else.

 

[rusalka]

New video of the shortened Pyrex tube to 15mm



Dan

All I have to say is wow. Would love a few chunks if this goes to coop level.

 

[DDD]

That has to do with the resonance frequency used by an NMR (Nuclear Magnetic Resonance) depending on the strength of the magnetic field. Glass is a crystalline structure and has a physical property called its "resonant frequency". That's the frequency where it shatters like an opera singer with a wine glass. These tubes are simply tested safe for the various NMR frequencies used in the labs (different analytical methods require different frequencies depending what is being analyzed). I wouldn't think it makes any difference here, important attributes are the geometry (OD/ID) and that it has a high heat tolerance.

Thanks for the explanation.

 

[rusalka]

Anyone else thing this would be fantastic with the ceramic sleeving?

I was thinking along those lines myself.

 

[emonty]

I wake up and what happens?? a game changer Great work Scubabatdan!!!!

 

[therealcmac]

Subbing....very cool.

 

[Nurzrachit]

Wow ten more pages since last night of good reading. All the excellent ideas are flowing on the modders. Lets all make sure to post our builds once the glass gets flowing. I am interested in the ceramic idea as well, but I wonder about heat tranferance. I know that ceramic is more of an insulator. Also if the heat from the glass would cause breakdown in the juice in the tank from excessive heating. I'm going to work on a coil isolator with the glass out of the tank and see how that does.

 

[Nurzrachit]

Just a test.... thanks Dan, your da man.
I used the glass from a 250ma fuse just to see if this would work. It works fantastic and at only 6.64 watts it looks hotter than it is. No more wicking issues and having to tilt the RBA for better wicking.
I'm waiting on a 3mm Pyrex type tube and 2.5mm tube.

The fuse glass is wide at 4.5mm. I had to try my best to keep it away from the positive post so the coil windings don't short to it.
Anyway......... see attached. It's a bit out of focus but you'll get the point.

That looks as though vapor production is occuring from the top and bottom of the wick. I am assuming none of the glass from the fuse housing is extending into the tank sinse you said it was 4.5mm? that is what I want to achieve, just isolate the coil only without the tubing running into the tank. Awesome idea MCU. When the world wakes up it's time to go to the auto parts store!!!

 

[slopes]

It got me thinking about ceramic paint - of the sort used in car mechanics. Dipping the top of the wick into this might provide a barrier... if a nontoxic paint exists. the heat from the coil would cure the paint.

 

[VaporMizer]

There is a variety of different ceramic paste out there...I don't know if any do what you're looking for. Some are for high temperature repairs. I ran across them searching for the small ceramic bobbin I convinced myself MUST exist after first reading this thread....no such luck, yet.

 

[Frenk Furth]

Well the reason it does not taste good is because of hot spots. Hot spots super heat red hot, and when they come in contact with the juice, it burns it causing a foul tatsing vapor. Here the kanthal is wraped around the pyrex, no hot spots because there is nothing to short to, so you have an even heat distrobution through the entire coil. With the whole coil evenly heating, it heats that section of the pyrex and in turn the juice suspended in the SS mesh causing a "Clean" vapor. No burnt taste or massive TH from shorting.
Hope that helps.
Dan

If I understand you correctly there is no need to oxidize mesh and I can put into this pyrex tube for example also cotton pads or something similar ?