Initial impression - excellent idea, something to think about ...
Will need a temp setting slightly over 247C
But everything that vaporises below this temp will also end up in the PG. However, at least no dry residue stuff.
Some of the nice
tobacco flavors that resemble chocolate and coffee (that are masked by tar and ash in an analog) should also end up in the PG.
This nicotine will be 'free base'? I guess so.
Does need more thought and more input, but looks promising. Add some dry-deposit-free flavors and finally we have a
juice that will produce no gunk to burn up on the atomizer coil.
edit (add): Thought about running at a lower temp first to remove the unwanted volatiles, but this would include water and so just dry out the tobacco and perhaps degrade the nicotine or cause it to react in some way. So not a good idea (?)
Also, this method might release only the nicotine that is already free-base, a minority fraction (?)
Will need a good source for the tobacco.
It might be good to soak the tobacco in a little PG before hand and then put the whole lot into the device.
Will be interesting to compare, cost and otherwise, with soaking nicotine patches (my current preferred backup method).
Perhaps the same end can be achieved with equipment cheaper that the commercial device ($250); and be made more suited to the purpose in terms of getting the vapor to condense in the PG (or run down into the PG after condensing).
Safety Note:
Nicotine is an extremely toxic substance. More so that arsenic, milligram for milligram. Its extraction, storage and use in e-liquid pose a significant risk to the user and anyone who might come into contact with it.
Never allow nicotine to touch your skin or allow it to build up in the atmosphere. Always wear suitable protective clothing and keep workspaces well ventilated.
Extreme caution must always be applied in the handling of nicotine, especially where children are concerned - a drop of e-liquid that might make a long-term smoker feel sick will likely kill a child.
All items contaminated by nicotine extraction or e-liquid mixing must be cleaned or disposed of accordingly. Treat it as toxic waste - do not allow it to pollute the environment or remain unattended or unsecured at any time. Contact your local authority to find what provisions there are for hazardous waste disposal before you attempt any e-liquid production.
E-liquid and all substances used in its production must be stored securely away from children and pets and in child-proof bottles.
Appropriate care must be taken to safeguard against fire-hazards. Many ingredients in e-liquid are highly flammable, as are many substances used in the extraction of nicotine.
Even following these guidelines cannot guarantee your safety.
If you do not have experience in handling dangerous chemicals do not attempt to do any DIY liquid manufacture.