The Pyrex SS hybrid Wick

[mre777]

Got my tubes in today and was having a little trouble snapping off piece as small as i wanted Im attempting a mini version on the enclosed coil like Big Screen. I want to post pic but my camera is having trouble taking a clear shot of something this small
I did a NR wire tied to 32g Nichrome and put it inside of a 16g blunt needle so i could twist the coil around the center post with good spacing, then i connected some NR wire to the other end of the Nichrome and pulled the needle out and was left with a nice small coil with both NR leads facing the same way, was reading around 3 ohms. Finlay I snapped off about 7.5mm of my 3mm tube and stuffed the coil in and JB welded both sides closed. I am waiting till tomorrow for the JB weld to fully cure and Ill test fire it a few times to see if it explodes before i put it into application. I will let you guys know how it goes and hopefully have some pic of the finished product.

 

[Big Screen D]

Cool mre777. Really interested to see how the inner coil set up works with larger diameter tubing.

 

[DizGrizz]

D9mel & Big Screen D, AWESOME!!! Can't believe you guys got these together so quickly. I think the Borg would be impressed with the effectiveness of this "collective"!

D9mel, did you use anything to insulate the center/return wire or is is staying away from the coil on it's own?

 

[DizGrizz]

mre777, excellent stuff!! Be careful with the potential fumes from the JB Weld as you will be the first guinea pig on using the stuff.

 

[d9mel]

D9mel & Big Screen D, AWESOME!!! Can't believe you guys got these together so quickly. I think the Borg would be impressed with the effectiveness of this "collective"!

D9mel, did you use anything to insulate the center/return wire or is is staying away from the coil on it's own?

Thanks! A lot of good concepts from some great folks to test on this thread.
Look back at pg 142 bapgood was kind enough to post some picks for me, one of them is a sewing needle that I used to twist both legs of the coil around kinda like a cork screw. I was worried about running a lead through the center cause once this coil is set there's no going back for adjustment. My main goal was to try to seal the glass on the wired end of the tube by melting the glass.

 

[mre777]

Ok so i got some pics! The first 3 are my mini coil sealed at both ends with the JB. The last 2 are longer and more like Big Screen's but I torched the end to make it really narrow at the bottom and I sealed the top with the JB. This is not the high temp JB but Ill see if it will work and I intend to let it fully cure before I try anything. Im fairly certain its safe in its full cured form.

 

[DizGrizz]

d9mel, ahhh, I understand now...good idea as it makes all of the res wire part of the coil and might well eliminate the need for NR wire within the coil tube.

 

[DizGrizz]

mre777, nice! Can't wait to hear how they work out once cured.

 

[DizGrizz]

Sorry for the stream of posts...having to go back and reference what I'm posting about (need to remember the multi-quote)...

Hey, bapgood, that looks super cool...err...hot! I am trully impressed that you got a coil into that small a needle. A bit hard to see, are the leads glowing as well? What voltage were you pumping into it and how quickly did it seem to come up to a glow?

 

[d9mel]

d9mel, ahhh, I understand now...good idea as it makes all of the res wire part of the coil and might well eliminate the need for NR wire within the coil tube.

NR wire is necessary leaving the tube or you get really hot legs. I didn't have any I felt comfortable using though, .999 silver is ideal because its malleable, but melts too easy, nickel might be too rigid and damage the glass.

I might pick up some strong flux and solder small lugs of thick NR wire to the coil for the transition. That way I can install the coil and mesh and run the NR leads to the lugs, a plug and socket setup would be pretty cool, could design a plug in heating element atomizer.

Melting the glass around the leads is really difficult and won't always work though. Not the most reliable setup with basic tools.

 

[Big Screen D]

So far, so very good. Been hitting this Mini-Innie Scuba since last night. Have gone through around 5ml of HHV Heavenly Tobacco. And it's just that Heavenly.

Some random thoughts and observations in no particular order.

Vapes very much like a traditional genesis atty.

Start time to vape production truly on a par with a GA. Just driving around town vaping away with no particular thought to this being a different device.

No problem chain vaping. Wicking is superb.

Air hole must be aligned with the wick. If moved off of alignment, monster throat hit-crappy vape just as would be expected.

No need for crazy wattage. Vapes nice at 8w.

Have to wonder what kind of glass I really have here. Softening point of Pyrex is 800c. I can deform a naked tube in seconds with 8 watts.

Need to try some builds with more mesh. I think this will be counterproductive, but would be remiss not to see if it can be made even better. I say counterproductive because as is, vapor is not only produced and escaping at the end of the wick, but also out the sides of the wick. So I'm pretty confident that the mesh itself is actually hot enough to vaporize the juice, but additional layers may cut this off. We'll see.

Picked up a micro torch on the way home. The plan is to practice sealing the end using another tube to place a bead of glass as a plug. Should add some strength at that critical end point.

It is tricky to make the wick stay tight on the tube. Torch and quench worked to give the mesh enough stiffness to not partially unravel, but I want to work on some variations of the wick. One thing I want to try is a spiral. Such that the wick has more layers below the heating area, and progressively less wraps at and above the heating area.

Remains to be seen how long the coil holds up since I'm sure it runs much hotter than usual.

How long before the wick gunks up. Good to go through 5mls so far. Need to throw some Boba's at the next build and see how it likes that.

LOL, just sucked down a couple of ml thinking about this. So add juice hog to my ramble.

 

[mre777]

Just a thought but maybe you could tie a wire around the outside of the wick to hold it snug to the tube, no need to worry about shorting anymore

 

[Big Screen D]

Ok so i got some pics! The first 3 are my mini coil sealed at both ends with the JB. The last 2 are longer and more like Big Screen's but I torched the end to make it really narrow at the bottom and I sealed the top with the JB. This is not the high temp JB but Ill see if it will work and I intend to let it fully cure before I try anything. Im fairly certain its safe in its full cured form.

View attachment 156916View attachment 156917View attachment 156918View attachment 156919View attachment 156920

Nice work man. So that's 3mm OD tubing?

Looks like the coil is not up against the tube. Be interesting to see if it heats up quickly.

 

[bapgood]

To answer some questions....The coil is still measuring ~2ohms just outside the tube.....5 volts....it heats up pretty quick.....like d9mel said the legs will need to be short as the legs get hot, I think this is due to heat wanting to follow the easiest path out the ends....might not be a problem if the ends are sealed.

d9mel I like the socket idea....I was kind of thinking the same thing.....but with the needle I was thinking I could solder the bottom of the needle closed along with the bottom leg of the coil and use the needle instead of running wire back up the middle (cuz there isn't a lot of room up the middle

 

[mre777]

Nice work man. So that's 3mm OD tubing?

Looks like the coil is not up against the tube. Be interesting to see if it heats up quickly.

Thanks but nah its not against the glass, i figured that with such a small airspace it will heat the whole thing pretty fast. Im hoping it wont pop from the heat, the longer one is 2.5mm OD and i may be drilling my DiD clone to make these work if they look promising. I Ordered another DiD clone so I'll have a spare to mod out to optimize this venture

 

[d9mel]

So the soda is still holding, how did you do do it? Sealing the top might be kinda tricky but that sounds a lot more durable than the glass.

 

[bapgood]

So the soda is still holding, how did you do do it? Sealing the top might be kinda tricky but that sounds a lot more durable than the glass.

The hardest part was finding something small enough to wrap the coil around. Once I got the coil wound I oxidized both the coil and needle separately in water and baking soda mix. After the oxidation the coil actually slipped in easy.....so either coil shrunk a little of the ss needle was still expanded from the heat.

 

[mre777]

Didn't someone say the baking soda made a funny taste?

 

[TBinAZ]

On a whim, as I already have some silver NR wire, but a slightly smaller gauge and kind of overly malleable, I picked up some of this NR tonight, along with some silver crimps for my VST atomizer (and others). We'll see how it does.

Wire, Beadalon® 316L, stainless steel, half-hard, round, 26 gauge. Sold per 20-meter spool.
Crimp, sterling silver, 1.1x1mm micro cut tube, inside diameter 0.76mm. Sold per pkg of 100.

NR wire is necessary leaving the tube or you get really hot legs. I didn't have any I felt comfortable using though, .999 silver is ideal because its malleable, but melts too easy, nickel might be too rigid and damage the glass.

I might pick up some strong flux and solder small lugs of thick NR wire to the coil for the transition. That way I can install the coil and mesh and run the NR leads to the lugs, a plug and socket setup would be pretty cool, could design a plug in heating element atomizer.

Melting the glass around the leads is really difficult and won't always work though. Not the most reliable setup with basic tools.

 

[bapgood]

Didn't someone say the baking soda made a funny taste?

Yes, but they also said that they didn't give it time to "season" or break in if I remember right. My original thought was to run NR back up the middle and once the top and bottom are sealed the soda oxidation could be buffed off.