To tmmason:
I don't know Bjorne, but I do know that the Japanese trained bonsai artists prefer copper. With a few exceptions: aluminum for azaleas. And maybe deciduous.
Usually deciduous trees only get new shoots wired. They don't try to bend wood that's over a year old. They wire the new shoots when they are soft and flexible, leave the wire on for a month to six weeks, remove the wire, cut back, let it grow out, wire the new shoots...
So, for this they use aluminum. The shoots are very flexible.
For conifer, pretty much copper only.
(My sources for this information: Peter Tea, Owen Reich, Boon)
I don't know Bjorne, but I do know that the Japanese trained bonsai artists prefer copper. With a few exceptions: aluminum for azaleas. And maybe deciduous.
Usually deciduous trees only get new shoots wired. They don't try to bend wood that's over a year old. They wire the new shoots when they are soft and flexible, leave the wire on for a month to six weeks, remove the wire, cut back, let it grow out, wire the new shoots...
So, for this they use aluminum. The shoots are very flexible.
For conifer, pretty much copper only.
(My sources for this information: Peter Tea, Owen Reich, Boon)