More work at the Preschool Root Disease, selective logging show.
Water on the knee is subsiding, and I was ready to climb some trees. Spurred up one to120', set a high TIP via throw line in the adjacent tree to pull up wraptor rope, lowered out and pulled into the next fir, stripping it and the adjacent one on the way down.
It's challenging to try to squeeze trees/ spars into tight lays with minimal damage to keeper trees. I'm a perfectionist, becoming more sie la vie as it goes. Knocking down the alder here and there, or the top off of a maple, accidentally, offers easier opportunities for the next tree falling. As there is more space. Squeezing between stumps is tough. Spars fall much faster and harder than whole trees.
Stacking 3 wedges...
This is a way to stack three wedges for a hard back leaner.
Face cut tree.
Bore cut through the hinge flat to the horizontal, cutting a bit side to side.
Drop down 1/2" on the back cut side and bore forward from back cut side toward the layout.
Drop down another 1/2", bore thru back to front.
Set three wedges, vertically stacked.
Cut one side of back cut even with the top wedge.
Tighten wedges.
Cut other half of back cut.
Pound wedges in, high mid low, hi mid low. Rinse and repeat.
The wood between the wedges keeps them from wanting to spit out. The slots keep them from twisting sideways or otherwise get out of vertical alignment.
I learned it from a guy who learned it from Arbormaster Training.
I added wedges in the sides of the back cut, just because. I used the broken blue stub of a wedge on the right. Extra wedges helped a bit since the broken blue wedge tip could not be driven more, so sort of stacking 2 and a half..
Two large orange wedges are stacked on top of a blue wedge, which I broke while pounding. Best bet seems to be three new medium wedges. 1/2" of wood between wedges hold them tight. Keep the three wedges slots parallel.
The wood shears along the vertical plane between the wedges as you pound, as you may make out in the picture with the top orange wedge removed.