First off, thanks to Hendrik for his writeup which was most useful in putting this together. Secondly to the staff of Sun Microsystems Oracle, for providing an endless supply of drinks cans [covertly stolen from the recycling bins]. Hendrik makes the whole thing sound like a piece of piss, but I ripped numerous cans and had great difficulty in getting one can inside the other, in the end I settled for the tried and trusted British method of fudging it; cutting two short slits on the inner can to allow it to slide inside the outer. I also found masking tape and scissors were easier than trying to use a blade and book/block, particularly if trying to get a clean cut.
Anyway, at 10g it’s the first step to a lighter cooking system, my current setup [MSR Pocket Rocket/Titan Titanium Kettle/Gas/Ti Spoon/Firesteel/Blah/Blah/Blah] comes in at 482g. Given my winter pack weight is totally ridiculous and I have limited funds to throw at the problem [I say that, but will anyway], I thought this might be a cheap/effective way to tackle it. Next up, some sort of home-made Caldera Clone type setup. I’ve not given myself a target weight yet, but there will need to be a healthy saving to make me switch from gas. PhilT has just posted on this very topic, so there is something to aim for right there…
McAlisterium 
Once you start going down this route it’s easy to become obsessed. I spent countless hours in my previous job whiling away the nightshift in pursuit of the perfect meths stove.
I still prefer to take the hit in weight for the convenience/speed of gas but I’ve been known to bring out a homemade meths burner just for the fun of it.
Oh, very nice! You know there is a calculator out there, which helps you calculate the upper and under diameter for a Caldera Cone?
I have made some stoves out of the larger diameter cans, and there I also had a few rip-ins, so I guess its part of the learning process. Yours is very pretty, and gives a nice pattern – looking forward to see how you continue on the road to a lighter kitchen =)
Very good effort Fraser! My attempt at this has a swathe of aluminium tape around it to seal it, yours is much neater! I still use gas in winter but if if ever thaws here (?!) I’m switching to a multi-fuel Caldera Cone this year.
BBF, I can’t see myself abandoning gas any time soon, but it’s always nice to have options…
Hendrik, yes, I’d seen the thread on ODM, I need to source some suitable materials first… I tried a different spacing/number of holes, but found this combination to be just about right…
Cheers Joe, I figure the Caldera Cone has a whole lot of positive reviews online and in print, it’s a nice compact solution too. I guess the price is for the R&D rather than materials, but seems quite high [my inner Scotsman talking], I’d probably throw cash at this normally, but have a few other [large] commitments financially ATM, so if I can knock something together A-Team style, all the better 🙂