How to Tie a Plumb Bob
A plumb bob is a balanced weight with a sharp point on one end and an attachment point for a cord on the other. Properly tying the knot in the cord to secure the plumb bob will ensure that the plumb bob functions correctly. Before tying the knot, it is important to understand the terminology used for the cord. The tag line refers to the end of the cord that you inserted into the plumb bob. The standing line refers to the long length of cord that will suspend the plumb bob. Does this Spark an idea?
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Instructions
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1
Determine if your plumb bob has a removable cord attachment by examining the cord attachment end of the plumb bob. If you see a small cord sized hole on top of the plumb bob, unscrew the cord attachment.
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2
Wet your fingers and rub the end of the cord between your fingers to pull any fraying strands of line tight to the cord. Insert the cord into the cord hole. Pull the line through the hole so you can grasp the tag line with your fingers. If you have a one-piece plumb, insert the tag line until you can see the line in the lower perpendicular hole. Slide the 1/8th-inch punch into the hole to push the tag line into the open where you can pull the end of the line.
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3
Pull 12-inches of tag line through the cord attachment hole.
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4
Hold the plumb bob or unscrewed attachment point in the palm of your hand.
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5
Make a loop by bringing the tag line around to the standing line.
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6
Tie a knot in the line.
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7
Pull the tag line and the standing line to pull the knot tight.
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8
Secure the cord attachment to the plumb bob if you unscrewed it in step one.
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