Search:

Australian blackwood (Acacia melanoxylon) is a common timber tree now; maybe suitable?

There actually maybe cockies/handymen with dried stuff in their sheds too come to think of it. It's amazing what you can score through FB :)

What about arborists? They're often taking out ornamental trees; especially cherries etc. They use cherry would for BP guns don't they? They may be doing limbs big enough for a stock or even entire...