Fig. 70. Fig. 71. Fig. 70. The circular part (d) can be made on the lathe;the way is clearly shown at Fig. 71. The grooves PIPE FITTINGS 129 marked (b) may be made in one piece of lumber, andmade, of course, with the core box plane. If it is desiredto make this very strong, a piece of board is…
Patternmaking
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