A set of saw bladesÂ*from an early Queensland millÂ*serve asÂ*a reminder of a time whenÂ*timber from rainforests, now with planet heritage status, wasÂ*a inexpensive and widespread constructing material. Â*The blades weigh about 20 kilograms each and even a century on, they stay sharp, which proved a challenge throughout their installation in the Landmarks gallery. Unless ...