OKcomputer said:
Hi Dave,
I'm a PD owner and I'm interested in your glass stems. According to your post, the 3/8" UD stems are compatible with the PD, but I just had a couple of questions.
I guess I'm having some trouble picturing how the silicone bowl will mate to the heat port on the PD. Does it basically just slide over the outside of the PD heat port, or does it actually slide into it? Maybe a picture would help, if anyone has a PD along with some UD stems.
How large is the bowl capacity compared to a PD bowl? (This might be a question for others besides Dave, not sure if he's used a PD or PD stems.)
Are PD stems compatible with UD vapes?
Approximately how long are the glass tubes you sell? Looks like they vary, but what's the approximate range?
Is it possible to commission a custom glass tube? Not looking to do anything super complicated or break the bank. It'd probably be along the lines of pointing to one of your existing tubes and saying "how about this color instead?"
You mentioned that using UD glass tubes with a PD may actually increase the PD's performance. In what way(s)?
Also, as if it needs repeating: Your vapes are absolutely beautiful. If I hadn't been so mesmerized by the enormous PD thread upon finding FC, I probably would have purchased a UD instead of a PD as my first vape. Part of why I'm interested in buying UD glass right now is because it's looking likely that the UD will be my next vape, even if that's years down the road.
Thanks in advance for considering the litany of questions!
Hi OKcomputer - Abysmal already answered your one question but I'll cover it anyways. The UD silicone stem fits over the outside of the heatport tube instead of fitting inside it. The tight seal provided by the silicone results in much higher efficiency and I'm sure will work better with the PD than the original stems do.
As far as bowl size is concerned a standard loaded UD stem hold approximately the same amount a PD stem does though the UD stem has the capacity to hold considerably more if you desire because of the larger diameter of the tube. So you can load similar to a PD or more, your choice.. either performs equally well.
I use 2 sizes of tubing for the core's inner-tube, one the PD stem will fit inside of and seems to work fine but the other a PD stem is close enough to the same size that it just butts up against it and doesn't fit inside or outside. In the future the vast majority of UD pieces will have the size core that works with PD stems, older ones are the ones that may not.
Our glass stems are 3" to 4" long and I can take custom orders but when I order it has to be in bulk so any specials have to wait until I'm ready to place a bulk order too. Special requests are usually priced the same as the rest of the glass though on occasion ends up being $5-$10 more if my glass guy feels they were extra hard to make.
I think I covered it above why the silicone stems are more efficient but again it's because of the increased seal and suction and the larger diameter stem with unrestricted airflow doesn't hurt either.
Hope this answers all your questions, if not you know where to find me.
@cluffy - if you want the Mahoe one it's yours.. there will also be some Walnut ones coming soon I hope.. either way you're good.