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Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 59
shown in the detail draw-ing and finish to the dimensions shown,being careful to make the correspond-ing pieces exactly alike in order to pre-serve the perfect symmetry which is- try in work of this kind. In bor-ing the holes care must be taken to POPULAR MECHANICS | |© top crio • Z LIKE THIS.… … IT* tli edges of the holes Bharp andclean. The holes Bhonld each be boreduntil the Bpnr shows; the bil shouldthen 1 withdrawn and the rest of theboring be done from the other Bide. micirculaT notches arc made byplacing the two pieces edge to edge in ■ ami placing the spur of thebit in • The L-in.…Handicraft · Amusements
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