Re: Can I Cut This With a Bandsaw?
I cut non-ferrous metals fairly regularly on my bandsaw and tablesaw (and occassionally my router), so I can confirm that no harm will be done to the blade or saw with regard to what you are trying. Just be aware that metal tends to behave (and sound) quite different than when working with wood with your power tools.
However, by combining metal with wood you are creating two competing variables with regard to TPI for your blade choice. With wood that thick you tend to want to choose a blade with fewer teeth/inch and deep gullets to allow the gullets to remove the waste material efficiently. However, when cutting metal you tend to want considerably more teeth/inch and shallower gullets to ensure a smoother cut and to prevent the blade from trying to take too big of a bite into the metal (which will tend to tear the metal moreso than cut it and reduces blade life).
One would tend to want to aim for at least 10+TPI (actually, 15-20TPI would be nice) for the metal side of the equation, but the thickness of your project probably calls for more like 4-6TPI for the wood. So your first pass or two is going to be experimental in terms of finding the optimal balance between a coarser blade for the wood and a finer blade for the metal. I would offer more specific advice as the to the optimal blade, but I have not yet had a need as of yet to combine metal and wood on my bandsaw (I've done so with my tablesaw, circular saw and router, but never the bandsaw).
In this case, it probably would have been easier/safer to install the copper after resawing the wood. The copper could then have been brought level to the wood at the same time you sand the final piece to remove bandsaw marks.
Blade width isn't really an issue so long as you have adequate tension and are not suffering from any deflection or barrel cutting (due to inadequte tension). A wider blade makes it easier to stay in a straight line when resawing, but your ornament is small enough that that really shouldn't be an issue. I normally use a 1" blade when resawing, but for a small project like this I would be perfectly happy with a 1/4" blade. In fact, I would consider the 1/4" blade far more appropriate for a project of this size.