How critical are core timbers?

[scootsp1]

I'm thinking about making my first laminated glass bow.I was wondering how crucial is the core timber?
It's a bit tricky for me to get any laminations at the moment but I have a nice slab of spotted gum in my shed.Maybe I could make some core tapers from it? I also have a heap of bamboo left over from a previous build could I use that for core taper?
Any advice would be greatly appreciated!

[Robertfishes]

Can you get your hands on some laminated bamboo flooring? I have heard of guys using that for tapers. I have seen other bowyers from Australia post here so maybe you will get some better sugestions..I sent you a PM with some info that may help you out. good luck with your build.