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Pulley Wheel Set: Ten Grooved Hardwood Pulleys Turned in Graded Sizes
A pulley is a wheel on a shaft with a groove round its rim that keeps the cord or belt in place (Wikipedia, Pulley). This set is ten hardwood pulleys from 30 to 75 mm, each bored for an 8 mm dowel shaft, so any two can be keyed to one shaft for experiments such as the differential pulley. Sizes and method are ours.
The picture: our drawing.
Intermediate
1 day
Instructions
1
1
Cut the blanks
Cut the blanks
Cut ten round blanks from 18 mm hardwood with hole saws, from 30 to 75 mm in steps of 5 mm, each a few millimetres oversize.
Materials for this step:
Hardwood Board1 pieceTools needed:
Hole Saw Kit
Drill Press
Safety Glasses2
2
Bore the shaft hole
Bore the shaft hole
Bore each centre 8 mm, square to the face, for the dowel shaft.
Tools needed:
Drill Press
Drill Bit Set
Digital Caliper 6-Inch3
3
Turn rim and groove
Turn rim and groove
Mount each blank on the lathe, turn the rim true to its size, and cut a groove round it between two flanges, about as wide as the cord. Measure each finished diameter at the bottom of the groove and write it on the face.
Tools needed:
Wood Lathe
Lathe Faceplate
Turning Gouge
Parting ToolDigital Caliper 6-InchSafety Glasses4
4
Key hole and finish
Key hole and finish
Drill a small hole through the hub of each pulley beside the shaft hole for a pin, so two pulleys can be pinned together to turn as one. Sand and oil them.
Materials for this step:
Linseed Oil20 mlTools needed:
Drill PressDrill Bit Set
Sandpaper Assortment
Cotton RagsMaterials
2- 1 piecePlaceholder
- 20 mlPlaceholder
Tools Required
11- Placeholder
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