Drill and countersink pilot holes for screws in two opposite corners.
Cutting a square hole in log siding.
Between each cut adjust the blade depth so it is deeper by inch.
A rotary tool is the best tool for cutting siding that is already hanging.
Set the depth of the blade to about inch and cut the lap siding in small increments.
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Set the block aside and use the knife to carefully cut away the siding along the top and the marked sides.
The edges of the drill bit should touch the sides of the square but not go past it.
Hold the block up against the siding s lower or butt edge and using.
Hold the siding firmly while you cut it and close the jaws of the snipper only about 2 3 of the way on each cut.
Using the line you scored with the hammer and chisel as your cutting guide use the circular saw to cut along the length of the line.