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Bench Grinder: Made from an Old Engine Piston (Shop Notes, 1919)
A belt-driven bench grinder or polishing head built from a worn engine piston: the shaft runs in bushings in the piston-pin bosses, the belt pulley turns inside the piston (which guards it), and emery or polishing wheels go on one or both ends.
Source: Popular Mechanics Shop Notes for 1919, p. 3249. Unknown: sizes. Picture: the article's drawing.
中级
Unknown
说明
1
1
Bush the piston
Bush the piston
Fit the piston-pin bearings of an old piston with brass or bronze bushings, or pour babbitt round the shaft to form the bearing. Fit a grease cup on top, as in the drawing.
此步骤所需材料：
活塞连杆总成1 old piston
黄铜管2 bushings
未知金属1 grease cup所需工具：
手摇钻
金属锉2
2
Fit shaft, pulley and wheels
Fit shaft, pulley and wheels
Cut oil grooves along the shaft. Put the belt pulley on it inside the piston, where the piston wall guards the belt. Hold the shaft endwise with collars and setscrews, and mount emery or polishing wheels on one or both ends.
此步骤所需材料：
低碳钢圆棒1 个
滑轮1 个
Shaft Collar2 个
砂轮1 emery or polishing所需工具：
金属车床
活动扳手3
3
Mount it
Mount it
Bolt the piston to the bench or to a special stand; make the stand very stiff for the high speeds these tools run at.
此步骤所需材料：
六角头螺栓 - 8.8 级1 number not given所需工具：
活动扳手材料
8- 1 old piston占位符
- 2 bushings占位符
- 1 grease cup占位符
- 1 个占位符
- 1 个占位符
- 2 个占位符
- 1 emery or polishing占位符
- 1 number not given占位符
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