Funny about the aus/kiwi I actually think I got your handle mixed with somebody from the big island. Thanks for the heads up. Remind me of when we had an exchange student from Chile and everybody kept asking him what he thought of America and he always said the same thing "I am FROM America: South America".
Definitely roll your own for changing the front bearings. It's a cake walk to change with the right tool but the 3/4" rod with the tools you can buy isn't close to strong enough to push a front bearing. The math works out to about 17T of force and 3/4 rod is designed for 11T.
I just used my press to change the front thrust bushings on my wife's car.
To give you an idea of the forces involved definitely not possible to hammer them in!
When pressing with the 35T press the sleeve went right in but I definitely wear earplugs because it takes a while with the 750 ft·lb impact banging away.
When changing the front bearings I've still been heating up the knuckle to about 120°C but no longer bother to freeZe the bearing for removing but have been freezing the bearing overnight before installing.
The math worked out to about 12-13T for installation. (There is a formula for thread size/pitch/torque that will give you linear clamping force on a bolt)