Just in case people didn't know about this. If you buy large timber at a Bunnings, you can have it cut at least once for free. As much as I would love to own a track saw, this service has meant I cannot justify another tool to own and store!
I have never been charged for extra cuts but I always go when it is super quiet (7am or close to when they close, keeping in mind the timber section gets fairly understaffed close to closing time). As long as you are friendly and have the measurements and pieces ready to go, usually they don't mind doing multiple rips and getting paid with a thanks mate.
"Does this service have a cost?
Bunnings stores may charge a small fee for timber cutting. The price is:
Timber docking - First two cuts are free, and 50 cents per additional cut
Panels and sheeting - First cut is free and $1 per additional cut."
There is also usually a large bin near the timber saws that have off cuts you can take for free.
Should I also mention that there is very convenient parking in the timber yard that is especially useful when it is raining ;)