I've looked at nearly all the possibilities and conclude: To upgrade my existing bernzomatic to accept the [URL="http://www.welduk.co.uk"]www.welduk.co.uk[/URL] cylinders would cost me around 90ukp including gas. To buy a new mini kit would cost me around 120ukp but that includes goggles etc. I've looked at buying a BOC portapack for around 180 but then I need to get the cylinders. The cost averagely 100ukp a year rental. BOC will not even consider you already owing a pair, you must pay the rental charge. My friendly garage will swap out gas cylinders but only the full size ones. Refill costs are less than 20ukp and will last me years. So, new option. Buy a gas welding kit, including gauges,goggles, torch, bags etc for around 90ukp then find some bottles so I can swap out. So now my question. Has anyone got or know of some full size gas bottles anywhere? Or even a full kit. Check down the side of your sofa.