The toy value seems immense, anyway. :-)<br><br>I really liked the lines of the horn version in the "gallery", as opposed to the horn versions in the models for sale. Not sure I like it another $30 or so better...<br><br>Not that it's a big issue right at the moment, but it is worth noting that most of these models have no metal at all to raise questions at an airport. On the other hand, if a member of the constabulary found one while you were being patted down, especially what with scorching and the burnt smell inside, I'd bet they'ed be really tempted to assume it's "paraphenalia" of some sort and send it off to a lab while you cool your heels in a cinderblock Holiday Inn. Something to think about.<br><br>It would seem to me that the most difficult part of making one is the bottom of the drilled hole. Probably reqires a custom square-ended bit, and some sort of polisher. I have lots of hickory ramrod dowels in different diameters, that wouldn't be much problem. One could line the hole with brass hobbyist's tubing. Obviously, the wood or whatever has to be dense and nonporous, so as not to absorb or split because of the pressure, and of course resist a bit of heat.<br><br>Maybe the most interesting facet for me is speculating on how it might be improved upon. The principle obviously works well enough in this most basic implementation, but.... flint-and-steel is to a Zippo as a firepiston is to... ?<br>