ng sand and thenram up the cope. Lift off and set to one side. With astrickle cut like A, Fig. 81, with shoulder B the samedepth as the thickness of the plate, cut out the sand tothat depth. Now take out the frame or pattern, and thereis left a cavity in the sand of the size and thickness ofthe… … Fig. 82. This cannot well be made with solid wood onaccount of the difficulty of guiding a rebate plane along 138 WOOD PATTERN MAKING the obtuse an^le, without the corner of the iron cuttinginto the other side. The best way of overcoming thisdifficulty is to use the method as shown at Fig. 82.…
Patternmaking
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