What is the significance of the rope that you insert into the hole before the wedge? If you were to score a line with a grinder on three sides first and then followed with chisels would the stone break following the score line? Does the location of the rope strands affect which direction the stone will break?
No, the rope is simply to keep the wedge seated in the hole. They are not worried about an exact break on a line for this particular use of the stone so no need to take the time involved with scoring lines etc. Most stone has a grain along which it will tend to break so when you need to cut opposing that grain you'll be using methods to force the break to follow the lines you want.
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What is the significance of the rope that you insert into the hole before the wedge? If you were to score a line with a grinder on three sides first and then followed with chisels would the stone break following the score line? Does the location of the rope strands affect which direction the stone will break?
No, the rope is simply to keep the wedge seated in the hole. They are not worried about an exact break on a line for this particular use of the stone so no need to take the time involved with scoring lines etc. Most stone has a grain along which it will tend to break so when you need to cut opposing that grain you'll be using methods to force the break to follow the lines you want.