. Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional . 2 OFEACH FuvwHeeL. r~^ ^. 1 1 1 ^rr .—1 1— 1 1 I--. Fig. 108—Details of the twin-cylinder marine engine 158 . Model Engineering be drilled in the casting on each side and start the drillon the one side while the casting is backed up by thetailstock center on the other. This will positively insureaccuracy and alignment. When the one side is drilled,run the drill right through until it passes through themiddle bearing, and then reverse the work so tha
. Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional . 2 OFEACH FuvwHeeL. r~^ ^. 1 1 1 ^rr .—1 1— 1 1 I--. Fig. 108—Details of the twin-cylinder marine engine 158 . Model Engineering be drilled in the casting on each side and start the drillon the one side while the casting is backed up by thetailstock center on the other. This will positively insureaccuracy and alignment. When the one side is drilled,run the drill right through until it passes through themiddle bearing, and then reverse the work so that thedrilled side rests against the center and the undrilled sideis presented to the tool. When this is finished, the threeholes are sure to be perfectly in line. The drill should be %4th of an inch under %6 if areamer is available, and one is really necessary in thiscase. When the drilling is finished, the %6-inch reameris passed right through the three bearing holes which fin-ishes them to size and, of course, to line also. To makea running fit for the shaft, the latter will have to beground in with fine emery and oil. The two cylinder castings are exactly a
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Keywords: ., bookcentury1900, bookdecade1910, bookidmodelmakingi, bookyear1919
