Handy man's workshop and laboratory . separate the individual turns of wireso that they look something like Fig. 273, H. The support for the heating coil, Fig. 274, A, should be madeof a piece of asbestos board or magnesia board y^ inch thick andof such a diameter as to fit easily in the bottom of the crock—in this case about 10^4 inches. If the asbestos or magnesia 332 HANDY MAN S WORKSHOP AND LABORATORY boards cannot be obtained, a good substitute may be found inslate, or in a disk of 1/16 inch thick sheet iron covered on topwith several thickness of asbestos building paper. Then porce-lain
Handy man's workshop and laboratory . separate the individual turns of wireso that they look something like Fig. 273, H. The support for the heating coil, Fig. 274, A, should be madeof a piece of asbestos board or magnesia board y^ inch thick andof such a diameter as to fit easily in the bottom of the crock—in this case about 10^4 inches. If the asbestos or magnesia 332 HANDY MAN S WORKSHOP AND LABORATORY boards cannot be obtained, a good substitute may be found inslate, or in a disk of 1/16 inch thick sheet iron covered on topwith several thickness of asbestos building paper. Then porce-lain insulators, each about 1 inch in diameter by 1 inch high andhaving a shallow groove near its upper end, should be fastenedto the base with flat-head stove bolts in the positions stretched on these insulators zigzag fashion, the heatingcoil will be retained in the grooves by its own elasticity. Forthe electrical connection to the heater use two pieces of No. 14white asbestos-covered copper wire, each about two feet
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
