I just listed a 4 jaw chuck on ebay with a 1-8 thread - because it's a metal lathe chuck, it doesn't have "teeth" to grab wood - but it could be useful for off center turning, and of course you can hold metal in it - I've made nice aluminum stuff on a wood lathe (HSS tools and keep the speed fairly low)
here's the link
well, maybe I grabbed the wrong link - I listed three chucks - that link will get you close enough to find the others - and, Sure, I'll ship anywhere - even to BC :-) (interesting that the two closest states to me that aren't in the USA are both BC - Baja California, and yours..... )
Also, Be very, *very* careful of the chuck jaws.
Sure, that should be obvious, but with all these woodturning chucks that have been designed to minimize the odds of eating a finger or a tool in the chuck jaws around, it's easy to forget, since you can't really see the projecting jaws when the work is spinning, and you're using freehand tools, not a metal lathe setup where you move dials that move the part that cuts. Nothing against doing it, but you might want a big note you attach to the thing when you store it to remind yourself not to do something stupid and painful each time you take it out and use it.
I've done woodturning with metalworking chucks. I still have all my fingers. I've hurt some tools. I can buy more tools - the fingers are a bit harder to come by, at least in a fully functional state.
Had my knuckles whacked pretty good by the jaws of a 24" metal lathe chuck once. Pain.
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