Popular science monthly . :||i ,ii|, ,Benf Wire T Form Sealing wax and wire can be made into alight pulley for a small motor the hole, held tightly, and bent as shownin the cut, making the outer curve alittle less than the diameter the finishedpulley is to have. The shaft that is totake the pulley is then held vertically,and a form the size of the pulley desiredis placed around the coiled wire. Sealing wax is then poured in andallowed to harden for an hour or coiled wire will hold the sealing waxtogether, and will be found to be strongenough for light work. Making a Space with a Chain
Popular science monthly . :||i ,ii|, ,Benf Wire T Form Sealing wax and wire can be made into alight pulley for a small motor the hole, held tightly, and bent as shownin the cut, making the outer curve alittle less than the diameter the finishedpulley is to have. The shaft that is totake the pulley is then held vertically,and a form the size of the pulley desiredis placed around the coiled wire. Sealing wax is then poured in andallowed to harden for an hour or coiled wire will hold the sealing waxtogether, and will be found to be strongenough for light work. Making a Space with a Chain Line ^^^_^ I. HANGINGPLASTER Making an opening for electrical wiring AN electrician was called to do someL wiring in a brick house where theplaster was put on lath nailed to avertical strip fastened to the bricks. Inapplying the plaster numerous hangersor hooks back of the lath were in the way(if the conduit. It was an easy matter toinsert the fish wire but how io make asufficient opening for the conduit puzzledthe electrician until a chain was seen inthe tool-box. This was tied to the end of the fishline and worked back and forth byjogging it up and down against thel)laster until a large enough opening wasproduced to let in the conduit withoutany obstruction.— F. Smisor. Popular Science Monthly 303 Straightening Warped Boards WARIKI) hoards may bo straight-ened by the following method andthey will stay straight. Resaw thel)oard into strips, about 3 ins. all edges and glue the piecestogether, being careful to reverse e\xryother piece sidewise. Then plane thesurface carcfidl>
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
