Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 97
efulin getting work down to exact size, as rapidly revolvingabrasive surfaces generally cut too fast for extreme ac-curacy by hand. The board is made wide enough to 94 Model Engineering accommodate two strips of abrasive cloth each 4i^ incheswide by 11 inches long, which is just half of a standard9… … rig. 59—A lap board which is very convenient for polishing and grinding flat surfaces recommend the use of a combination stone which is com-posed of two stones (coarse and fine) cemented together.Such a stone is both convenient and economical, as it canbe purchased at the price of a single plain…
Machinery
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