Then, measure the angle between the vertically hanging string and the instrument using a protractor. Simply tie the plumb bob to a string and secure the string to the angled apparatus.
Flip the bob in the chuck and finish the top end of the bob with the skew.īesides making a functional measuring instrument, this project is a great practice exercise in tool work. Accurately measure tilt angles for inclined planes or projectile-launching devices with these inexpensive plumb bobs. This cut requires absolutely no finishing. Remove the tailstock to finish the toe end of the bob with the toe of the skew. #Small plumb bob free#
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Keep the tailstock in place for additional support. Turn a tenon using a 3/8″ parting tool so that the piece can be held with a chuck.I chose to turn a small bead on the acrylic You can add different decorative features such as a cove or bead.
Remember to always turn from large diameter to small – this avoids a nasty catch.
Glue the three parts of the bob together. You also need to turn a tenon on the top knob and then drill holes for the tenons on the body. Size a tenon on the acrylic toe using a skew chisel and a pair of calipers. If you cut the bead properly, no sanding will be required. 
TIP: Beads can be cut with almost any tool, but the skew is the best at cutting beads cleanly.
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