This is all just theoretical right now, but I want to keep the temps low, and drive them lower, if possible. That requires more vacuum, which is achievable at higher costs.
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I’ll second that, 0.3g but performance shouldn’t degrade with smaller bowls if possible.
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Me, too. A max. of 0.3 should be sufficient.
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Ive been playing with vacuum levels and temps with a .25g load and its much easier to get that dense vapor going. @stickstones, Im going to send you a bowl that is 10mm shorter so that smaller dose sits in the center of the heater. When you get it, load up .25g and pack it nice and snug.
With that load, I find i only need to pump down to .5 atm to get the needle back to zero, then its primed and hits nicely. I ran at 133C for 10-12 mins.
Thinking we can experiment with vacuum levels all the way to atmosphere and see if the difference is notable
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The device seems like it will give us the best path forward to hone this in. Exciting stuff.
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Just posted a .3g session on youtube
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Woah.
I’m in.
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I bumped the temp up to 150C from 140 and that helped a lot
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That’s some pretty vapor! I’m with @stickstones on this. I’m fascinated by the idea of a whole new method of vaping. Not gonna shell out for one of the beta units 
but I’m really curious to hear about how it performs!
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Nice! What I want to see is a 0.1g load. It should be very efficient and you be able to get a really nice OHE with that system.
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Recipe: .1g, 30% atmosphere, 150C, 15min
After unseal, I gently blew through the exhaust port to push the stored vapor out in 5s pulses.
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Nice 
and such enticing vapor-porn videos for the steampunk lurking in us all.
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Cool video. Well done. I think it’s great that you’re being so responsive to the community’s requests and sharing your experiments with us.
The AVB and the amount of vapor look great to me and extraction seems really complete. The unit itself looks durable and of high quality.
I think the barrier for most people might be the 15 min time required before you can vape a bowl. So we’re trading time for vapor quality and coolness of the vapor.
If I compare this to a nice ball vape or top-tier on-demand portable I see the following:
| Wait time between 0.1g bowls | Flavor (out of 10) | Coolness of vapor | |
|---|---|---|---|
| ForgeHaven | 15 min | Assume partial vacuum and good materials make it 10/10 | Natively cool at < 150C (300F) |
| High quality ball vape/Log vape/On-demand portable | None | Uncertain compared to partial vacuum heating but let’s say 9.5/10 | Depends heavily on cooling solution but great solutions exist |
Of course the taste stuff is all just speculation and it’s very subjective, but I just don’t know if I’d be willing to wait 15min for a bowl (and in-between bowls). The taste would have to be super next-level.
Please don’t get me wrong, I love how good vaping tastes and have bought several very expensive vapes to experience the best taste I can. I would definitely try a ForgeHaven though if the process was faster. Just my 2 cents.
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Thank you for the valuable feedback!
I would say 15 minutes is not needed. I was going for max vapor output at 150C. Ill iterate and try 10, 5 mins. Pumping down to partial pressure is always going to make things slower, so I will also run at atmospheric pressure to see what the min wait time is. If that wait time is still too slow, ill get a higher power heater.
Whats the max time you find acceptable?
At what price do you start shaking your head? I think I can cut some cost out with an analog timer switch style heating method vs. Digital
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I think if you can optimize and enhance the technology a bit people would be much more interested and if you asked for $450-$500 that would be a much more acceptable price.
I must be honest this is the thread I click on first when I come to the forum when I see a new reply and reading about things being tweaked to people on the forums opinion ahs been good to see.
I know am not alone in saying I am very interested in this and am hoping that this develops into something we all need and want to buy.
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This is just my guess but I think you’d probably have to keep it under a minute to be competitive with other top vapes.
As for price, I personally would think twice at a $500 threshold, but it wouldn’t prevent me from paying more if people I trusted here endorsed it. That’s just me though.
I think the more sublime your vapor tastes, the more people might be willing to wait. It’s great that you’re open to addressing all this.
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I wonder is it the heater takes longer to come to temp or some other factor?
If just the heater lag I think that could be a quickish fix to upgrade because I would think once at temp in a vacuum environment it should vaporize a lot faster.
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good point, but here’s another possibility. What if the taste is really good and worth the expense, but I don’t want to wait 15 minutes between 7 sips. OK, don’t wait at all! Use a second vape, like one of them budget Universal Ballers for the meat and potatoes, but reach for ForgeHaven for a sweet desert every 15 or 30 minutes, or just at the end of the evening, or the beginning, or both. It would definitely be a spurge for some, and too much for others, but many a company survive as luxury lifestyle brands.
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I found this article which I’m still digesting and probably will be for a couple of days, but one note from it was the THC boiling point at a near perfect vacuum is likely in the 190-200C range. I think that this would need to be the range the oven should be tuned for because while I and at least a few others on here are major flavor chasers, it really requires that full entourage to have a happy experience.
It is also worth noting they would leave the material in that environment until all thc was used which in that near perfect vacuum state took 20+ minutes. That’s total vaporization, to be clear. Nothing we do without combustion will get there with any method currently available.
I love the science of this!
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@ForgeHavenVape do you know how the rate of canabinoid vapor changes as function of temperature vs pressure? As a first order approximation it should probably be the same as with the compounds vapor pressure. That info should be available at least for the major ones that have been commercialized.
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