First N.E.T
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I was going to use only Pg but I decided to use 70pg/30vg so I can skip the step of mixing the pg extract in with vg. Just trying to keep it simple as possible
The only real downside to using a PG/VG blend for the extraction solvent involves filtration. The higher the extraction solvents viscosity (thickness), the more difficult it is to filter.
Inadequate filtering causes premature coil/wick failure (bad taste), and people soon tire of the constant maintenance. PG and VG produce a gunky extract but it's possible, with proper filtration, to clean them well enough to vape an entire tankful before flavor begins to suffer.
Yup. I use 1-micron filters and I can get about 7-8ml before the wick starts to suffer performance loss.
It usually seems to be the wick that first gums up, well before the coils do.
Cavendish... well, that's more of a 4-5ml thing before the gunk beast rears its ugly head.
PG takes a modest amount of time to gravity filter through a narrow vessel, though I cannot speak for VG - I would hate to see how long such a thick substance (especially at 50% or higher) would take to filter without some sort of force applied... that said, filter sizes/types (to name a couple of variables at play) are going to greatly affect the speed at which filtration occurs.
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yup.. 100ml of VG takes ( well it took mine) over 10 hours to filter thru a coffie filter... PGA... 100ml about 2 minutes, and most of that 2 minutes was waiting for the tobacco to drain off 
When Filtering don't you loose a little flavor each time you filter. what would be a good filtering that's ok on coils and still has great flavor ?
When Using PGA do you get the alcohol and harshness in the extract or do you just heat all the alcohol off.
When Using PGA do you get the alcohol and harshness in the extract or do you just heat all the alcohol off.
Higher levels of filtration (<3 micron), result in the loss of some flavor, the higher the filters retention rating the greater the loss will be. I currently use 1 micron glass filter paper and find the balance between flavor and performance best for my needs.
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I reduce (concentrate), my ethanol extracts 50% or more and use them as flavorings @ 2-7%. Personally, I don't taste any alcohol or harshness. In the past I have transferred the flavor into PG and evaporated the ethanol off.
What is a good place to buy them from I see there pretty expensive on some sites. Thank You
Have You heard of people using the Aero Coffee Press to do filtering ? Trying to find a good way to filter
Yes, a number of people have used one and reported good results using filter felt as the filter. I have not, but use vacuum filtering apparatus instead.
I get mine from Amazon buying them in packs of 100 but you must search carefully to find a decent price. With the PG/VG blended solvent you used (high viscosity), you will have great trouble filtering through anything <5 microns unless using positive or negative pressure assistance. My opinion is that a minimum of 3 micron filtration is needed to achieve an acceptable level of performance from your NET. I doubt you would be able to achieve that level of filtration on a PG/VG blended solvent without some form of mechanical assistance.
If memory serves me right people using an Aeropress bought filter felt and cut it to the correct size to use in their press. You can also buy filter paper in various diameters so that might possibly work as well. I have bought 1 micron filter felt from Amazon, it's what I use as a pre-filter and it might work well for your needs. Just be aware that filter felt is "nominally" rated meaning that it doesn't actually filter at its designated retention rating. The 1 micron felt I use is probably equivalent to a 3-5 micron "absolute" rated filter.
yup.. 100ml of VG takes ( well it took mine) over 10 hours to filter thru a coffie filter... PGA... 100ml about 2 minutes, and most of that 2 minutes was waiting for the tobacco to drain off
Gotta love the ease of filtering PGA, straight from the freezer (-10F), 30mls of ethanol will -gravity flow- through a 1 micron 5.5cm dia. filter in under fifteen minutes. In contrast, at +80F 30mls of PG takes an entire day to gravity flow through a 2.5 micron 5.5cm dia. filter. VG...well you'd better break out the vacuum equipment cause you're certainly gonna need it AND lots of free time.
Can you use just PGA & A Cold Tobacco Soak at room temp,without water or anything ? Just PGA- Would be nice to have the faster filtering
How much thinner is PGA compared To PG ?
How much thinner is PGA compared To PG ?
I currently use straight PGA nothing else added. PGA has a viscosity lower (thinner), than water. In comparison, PG is -much- thicker. And yes, you can extract tobacco at room temperature using pure PGA, takes about a week.
These are Filters for the aeropress im wondering what micron they are. There pretty cheap.
Amazon.com: Replacement Filters for Aeropress (350 pk): Kitchen Products: Kitchen & Dining
Amazon.com: Replacement Filters for Aeropress (350 pk): Kitchen Products: Kitchen & Dining
No idea. Made for filtering coffee they're likely >15 micron retention which wouldn't be ideal for extract except perhaps as a "pre-filter". Says they are reusable so I wonder what they are made from? They appear "fuzzy" in texture and look a little like thin filter felt. Cheap enough to find out but doesn't the Aeropress come with a few you could try?
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