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Belt Sander: a Lathe-Driven Garnet-Belt Sander (Shop Notes, 1919)
A shop belt sander for dressing wood surfaces: a 6 in garnet-paper belt running over four crowned wooden pulleys, one driven by the lathe, pressed down onto the work with a hand float.
Best belt speed about 2,500 ft per minute; leave about 1 in between work and belt.
Source: Popular Mechanics Shop Notes for 1919, p. 3235. Picture: the article's drawing.
Katamtaman
Unknown
Mga Tagubilin
1
1
Turn the pulleys
Turn the pulleys
Build up four solid wood pulleys 10 in across with 8 in faces and turn them in the lathe with a very slight crown; too much crown harms the belt.
Mga materyales para sa hakbang na ito:
Tabla ng Matigas na Kahoy4 built-up pulleysMga kailangang kasangkapan:
Torno sa kahoy2
2
Mount the pulleys
Mount the pulleys
Mount one pulley on a firmly held arbor in the lathe and the other three on iron-pipe shafts on a frame (drawing). Turn and file a true journal on each pipe, pour babbitt bushings in the pulleys, and cut oil grooves in the pipe or babbitt. Supporting the shafts on one side lets the belt slip off; supporting both sides is stronger.
Mga materyales para sa hakbang na ito:
Tubong bakal (makapal ang dingding, may sinulid na dulo)3 shafts
Hindi alam na metal1 babbitt bushings
Kahoy na pino1 frameMga kailangang kasangkapan:
Kikil na Pang-metal
Butas-butas na sandok
Lagaring Pangkamay
Martilyo3
3
Make the belt
Make the belt
Cut 6 in garnet paper (No. 1 1/2 for general work) so the ends just meet over the pulleys. Glue the smooth side at the joint, splice it with a strip of cloth about 1 in wide and then one about 3 in wide, cover each side with paper, and clamp between two small boards.
Mga materyales para sa hakbang na ito:
Papel de Liha1 6 in garnet paper
Telang Bulak1 piraso
Pandikit mula sa hayop1 pirasoMga kailangang kasangkapan:
Klamp na hugis-C4
4
Set up and run
Set up and run
Run the belt at about 2,500 ft per minute using the lathe's cone pulley. Set the work about 1 in below the belt on a table or a low sliding platform (two sets of tongue-and-groove joints at right angles), start the machine and press the belt down with a float like a blackboard eraser, or a roller.
Mga materyales para sa hakbang na ito:
Kahoy na pino1 platform, floatMga kailangang kasangkapan:
Torno sa kahoyMga Materyales
7- 4 built-up pulleysPlaceholder
- Placeholder
- 1 babbitt bushingsPlaceholder
- 1 platform, floatPlaceholder
- 1 6 in garnet paperPlaceholder
- 1 pirasoPlaceholder
- 1 pirasoPlaceholder
Mga Kinakailangang Kasangkapan
6- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
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