How about using OLD saw blades, hand saws, circular saws, crosscut
saws, etc. You should be able to anneal them, then cut easily and
finally, re-harden/temper. They will probably be high enough carbon
content to harden up into the high 50’s on the Rockwell C scale. A
major advantage is likely to be finding them in antique or junk
shops at salvage prices!
Dr. Mac (I’ve loved visiting Australia but it’s been quite a long