An important concept of wiring 101 strategy is that the wire needs to be stretched tighter as the result of the bending that you do, and not loosened by your actions. That is accomplished by considering which way you intend to move the branch before you put the wire on it, and then backtrack mentally so you can start wrapping from the right place and in the right direction so that the wire crosses the branch
at the right point and
from the right direction.
If you intend to move a branch up, then the wire has to be anchored below that point for at least one 360° wrap and pass over the top of the branch at its starting point: you move the branch up and that stretches the wire making it tighter and holding better. If you intend to move the branch down the wire is anchored above the branch for at least one whole circumference and passes under the branch at its starting point. Left and right follow the same rule.
Supporting the crotch of the branch is also important. The first loop should be close the trunk 360°, then begin the 45° wrap outbound. 45° is important because you want the maximum resistance of the wire to be applied against your bending it. That first 360° loop tight to the trunk supports the branch and distributes the load of the bend to the branch so that the main force is not applied
at the crotch of the branch/trunk union. This is more important in some cases rather than all, but it is a good practice that will help you break fewer branches off right at the trunk. (Some breaks can be re-set and encased in wound sealer and still live, but not at the point they emerge from the trunk. Those broken branches can never be bent again because that will always be a weak point.) If the wire ran at 90° to the branch, straight up and down, it offers no resistance to bending along the axis of the branch. If the wire runs a zero°, in parallel to the branch, again it offers little or no resistance to bending (or holding). Half way between the two, 45° offers maximum available resistance and holding power. Any angle that is more or less just has less holding power.
This wire is the KEY(my word, not the official term), the 360° loop supporting the base of the branch. The anchor point has to be lower so that the KEY can be wrapped couterclockwise and laid at the right place and angle to bend the trunk down and to the right and/or forward. If the trunk was to be bent down and to the rear, it would be wound clockwise. Once you understand this everything will fall into place.
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