<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Toluene, of course, was the active ingredient in model airplane glue (at least for polystyrene) which became a frequently abused substance. Lately, however it appears that cyanoacrylate is the weapon of choice for the purpose of kitbuilding. I also remember throughout the late 70s and early 80's going through small kegs of CFC, soaking KimWipes and buffing down the headwheels. "Totally inert" we were told. I thought I was being ironic when I voiced the opinion (thoroughly scoffed at) that the stuff would eventually come back and kill us.<div><br></div><div>Interesting aside (or maybe not) is that as a side-effect of the Formula One "Spygate scandal" involving Ferrarri and MacLaren, one tidbit that came to light was that Ferrari was NOT using nitrogen as a pressurant gas in their tyres (like most other teams). They were using a refrigerant similar to the non-chlorinated fluorocarbons used in air conditioners. It is extremely stable, and also helped to keep the treads from over-heating. Personally, I like a mixture of gases -- mostly nitrogen, a bit of oxygen, some carbon dioxide, a few rare gases... its also breathable.<br><div><blockquote type="cite"> </blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>Joe Owens</div><div>Presto!Digital Colourgrade</div><div>302-9664 106 Avenue</div><div>Edmonton, Alberta T5H0N4</div><div>+1 780 421-9980</div><div><a href="mailto:jpo@prestodigital.ca">jpo@prestodigital.ca</a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span> </div><br></div></body></html>