The rear sled is fastened to the top board with screws through the extending wings of the hinges and into the crosspiece. Holes are bored in the front ends of all runners, and a chain or rope is attached in them, the loop end of the rear one being attached to the under side of the top board, and the one in the front used for drawing the sled.
To Prevent Drill from Catching As It Passes through Metal
The regular slope of a drill will cause the cutting edge to catch as it breaks through the metal on the opposite side of the piece being drilled. But if a twist drill is ground more flat like a flat drill, it will not "grab" into the metal as it passes through.—Contributed by James H. Beebee, Rochester, N. Y.
An Ice Boat and Catamaran
By Robert K. Patterson
This combination is produced by using the regular type of ice boat and substituting boats for the runners, to make the catamaran.
In constructing the ice boat, use two poles, or timbers, one 16 ft. and the other 10-1/2 ft. long, crossed at a point 2-1/2 ft. from one end of the longer timber. The crossed pieces are firmly braced with wires, as shown.
The mast, which should be about 12 ft. long, is set into a mortise cut in the long timber, 15 in. from the front end, and is further stabilized by wires, as shown. A jib boom, about 6 ft. long, as well as a main boom, which is 11-1/2 ft. long, are hung on the mast in the usual manner.
