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One hit conduction vape

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TxRx

TxRx

Rising Star
Everyone seems to sneer at conduction vaping, but that's because we're usually talking about plant matter that will be unevenly heated.

I'm imagining dissolving a high quality freebase in ethanol, dropping it onto a warm metal disc with high surface area (ie highly etched) to spread the material evenly and evaporate the solvent. This disc would be atop some kind of PWM fired nichrome coil for heating.

The disc assembly would screw onto a standard beverage bottle that could be modified to work like a gravity bong. Ie, filled with water and drained as heat is applied.

Since the amount of material, the mass of the copper disk, and the airflow (and assuming room temperature air input) would all be known, it could be possible to control it all open loop, meaning a really simple electronic design (no need for temperature feedback)


The promise is that with a properly calibrated system, you could inhale any reasonable dose of DMT in one hit. Also, you could be confident in the precision of your dosing (assuming good starting material). This method might even reduce the amount of DMT needed for the same effects since it would all be ingested at once.

The ideal candidate metal from a construction point of view would be copper. Copper can be etched with a high level of fine detail by the home enthusiast (ie for electronic PCBs), with very little effort, although some startup costs. It's also a great conductor of heat, and resistant to alkaline substances. I've read about concerns of using it for smoking because of various toxic compounds that could form, but I'm not sure that that would happen at this low of temperature. What sorts of compounds might form between DMT and the patina etc. that might be dangerous?

Other possibilities might be brass, or gold plating copper.

Thoughts?
 
You could skip the etching and ethanol steps with a 60-wire titanium screen. You could just drop the freebase directly onto the warm screen. I use these screens instead of Chore Boy scrubbers in my GVG and there is no leakage.
 
Actually come to think of it, it could technically be possible to do the same thing with a flame heat source. In that scenario, you would heat a piece of metal that is channeled and evenly interfaced with the etched disc via geometry. At some point along the channel, a thermochromatic indicator could tell you when to apply/not apply the flame. It would be prone to more error, but still way more precise then lining up a lighter on a pipe and hoping for the right temp airflow (especially when you're aiming for a stiff dose)
 
Turns out titantium has relatively poor thermal conductivity.

Some numbers from wolframalpha:

Titanium 20.48 W/mK
Steel 46.6 W/mK
Iron 80 W/mK
Nickel 91 W/mK
Aluminum 235 W/mK
Gold 320 W/Mk
Copper 400 W/mK
Silver 430 W/mK

Silver isn't that expensive if it was a better metal than copper. An ounce is 20 something and you wouldn't need that much. Not sure what sort of machining would be required, its plausible you could buy it in sheets, cut out disks and just scratch the hell out of them.
 
TxRx said:
Everyone seems to sneer at conduction vaping, but that's because we're usually talking about plant matter that will be unevenly heated.
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Are we?

The "sneering" at conduction I've seen is in regards to pure xtal freebase. Convection > conduction for fb, imo/e. I used a meth-style bulb pipe to great effect and without burning DMT for the better part of a year, before switching to the GVG. I will never look back.

A good quote on the topic from gibran2:
gibran2 said:
The “crack” method heats the product by convection – a stream of hot air passes through and around the product. Convection methods include the “machine”, the GVG, and bongs.

The “meth” method heats the product by conduction – a hot surface conducts heat directly to the product. Conduction methods include light bulbs, test tubes, aluminum foil.

Any method that heats by conduction is likely to burn/carmelize/pyrolize the DMT before appreciable amounts of vapor are formed. The resultant vapor will be less potent and very harsh.

DMT is best heated by convection. When DMT is heated by convection it vaporizes very quickly –before it has a chance to burn.
Click to expand...
 
Any method that heats by conduction is likely to burn/carmelize/pyrolize the DMT before appreciable amounts of vapor are formed. The resultant vapor will be less potent and very harsh.
Click to expand...

True. By the usual means: ie. moving a point heat source under an thermal insulator willy nilly and hoping it will diffuse the heat evenly.

My hypothesis is that dropping the material in solution onto a finely etched disk would result in the crystals nucleating evenly across the surface. The conduction interface would affect all of the DMT simultaneously, as opposed to melting large crystals, and bridging insulating air gaps. By specifically designing the geometries, you can make all parts heat evenly (enough), at any rate you want.

This would be possible to do across glass as well, but time is an important factor. The longer the vapour is sitting around in a vessel, or your lungs, the less trip you're getting(because of the limited ingestion window), or less DMT you will get out of the vessel because it will start condensing.
 
Although I commend you for the ingenuity, personally all this seems like a lot of work. IMO it doesn't seem worth it when convection-style vaporizers are easily acquirable and all but flawless when it comes to vaporizing spice. Why complicate things?

EDIT: My intention is not to discourage you from pursuing this design. To me it just seems like the path of most resistance, towards a goal which is already easily attained.
 
Not at all I appreciate the perspective. I'm looking to waste time on something that provides marginal or interesting benefits at best. The one hit goal seems novel to me, but I could be wrong. Can you do this with existing vaporizers? I feel like without good technique, it might be really tricky.
 
TxRx said:
Not at all I appreciate the perspective. I'm looking to waste time on something that provides marginal or interesting benefits at best. The one hit goal seems novel to me, but I could be wrong. Can you do this with existing vaporizers? I feel like without good technique, it might be really tricky.
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By all means go for it, but I have never had a problem getting a dose (>30mg) in one hit through the GVG (convection) or even The Machine (a combination of convection and conduction). It only took a couple of tries with each to get the technique down well enough to accomplish this.
 
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