gasbag

Totally understood. But hoping that someone may have already tried....or have some knowledge of this sorta rig. Irrespective of the design concept - does water have any effect at filtering creosote and other smoke compounds?

I thought of this, but 99.99% sure it wouldn't work. It might cool the smoke a tad, but not filter it. Not having any fire/flame in the chamber is not at all an issue. It's just a question of whether or not the heat would generate enough pressure to force the smoke through several centimetres of water. The principle of what I'm trying to achieve is shown here: http://2012books.lardbucket.org/books/principles-of-general-chemistry-v1.0/section_14/ef7196ac113b257fe256277d399600ab.jpg I've seen that sorta thing done many times in a Lab, but whether or not it would work with wood chips is another matter. The other thing I was thinking of is making the secondary pipe narrower than the first - this would increase the pressure. What I can say is that the heat in the first pipe containing the wood chips would be intense. The outside of the first pipe would likely be glowing hot.

Thanks for the reply. That image - not something I've done myself (yet). Just something I found that best illustrates what I have in mind. I wasn't intending to use a valve & air pump. I was querying whether or not applying an external heat source to the sealed base of the "wood chip pipe" would generate enough heat-induced pressure to force the smoke through the water? But as I said, no air pump.

I have a DIY query regarding the bubbling/filtering of smoke though water. No, it's not regarding weed or tobacco - it's regarding wood smoke. Take a look at the following image, just as a start guide: http://www.artisan-distiller.net/phpBB3/download/file.php?id=1676 If a set-up was made using steel (iron) pipes similar to what's shown, where the left-hand vertical pipe was sealed and filled with wood chips, but instead of using an external air-blowing source (shown as an aquarium air pump) - an external heat source was applied to the bottom of the vertical pipe on the left (e.g. burner, or hot coals)....would enough "smoke pressure" be built up so that the smoke would be forced to bubble it's way out through the water? If so, would the water have any effect at trapping some of the tar and creosote bubbling through it? But overall, the main issue is whether or not enough pressure would be built up by the external heat source, where they only way out for the smoke is through the water. I can gurantee that a high degree of heat and smoke would be built up within the left-hand pipe. The other query is the same filtering concept, but instead of water....having the secondary vertical pipe (on the right, with the opening at the bottom) filled with some sort of steel wool - either fine steel wool or coarse stainless steel wool. Would this have any filtering effect at all? My apologies if I was clumsy and confusing at explaining this. I don't know if anyone can help me here, but I'm hoping somene might be able to help. "Peace"

This is going to seem quite silly and trivial, but I really want to get some good advice here. I'm considering making some of my own knee inserts for my paintball pants, along with adding some openable pockets made out of canvas or heavy gauge cotton, using velcro. The main reason I'm opting to make my own knee inserts instead of buying commercially available knee guards or inserts is simply because of area coverage; while the ready made pads/inserts probably work very well, I want something that covers a much bigger area on/around my knee/upper shin (i.e. the issue is less to do with robust protection, and more to do with area coverage). Ideally, I would like to be using either http://www.d3o.com/ or http://www.sorbothane.com/ sheets, but I can't find where to buy d3o in sheets, and sorbothane sheets are ridiculously expensive. From doing a lot of research and legwork, the most suitable materials I've come across are EVA and PE foam, but EVA foam seems a little more suitable. What I'm strongly considering doing is trying a "double layered" approach: For protection against rocks and hard surfaces, I'll probably use some really tough and flexible neoprene (perhaps 2-5mm thick) as an outer layer. For softness and cushioning, I'll probably use a softer, thicker EVA or PE inner layer. I'd then glue these layers together to make a set of simple, rectangular pad inserts, nothing more complex than that (approx 20cm x 25cm) The issue is finding the ideal material(s), density(s), and thicknesses (metric measurements). Having someone tell me "just go use some dense foam or neoprene" isn't going to tell me more than I already know. Obviously the thinner the inserts are, the better, but I want to adequately cushion and protect my knees/upper shins. I would need something that would let me fully drop to me knees on concrete or rocks, from a standstill position. I was also thinking that if I was to make these pockets on the outside of my pants, I could possibly get away with making the inserts a bit thicker. I'm fairly certain that any such inserts I might make would not impede my movement significantly. Whatever specific advice you can offer me, I'd greatly appreciate it. If you're concerned about liability issues, rather than saying "This is what I recommend.....", you can say "If I were going to make some knee pad inserts for paintball, this is what I'd do...." That way you would not be liable for any injuries I may sustain. But as I've stressed already, it's specific information that I'm after. But as I mentioned before, ready made products just aren't suitable.

Hello there all! Gas Bag from Downunder has arrived! I hope to get (and offer) some help, here and there.....hopefully without breaking (too many) forum rules.