molding hole (moldinghol)

In founding, an excavation in the foundry-floor in which castings of large size are made. molding-loam (mol'ding-lōm), n. A mixture of clay and sand employed by founders in constructing molds for loam-molding. molding-machine (mōl'ding-ma-shēn"), n. 1. In wood-working, one of a cla of high-speed power-machines for planing, rece ing, shaping, molding, profiling, and paneling wood. Such machines occupy in wood-working much the same position as the milling-machine in metal-work, as both operate by means of revolving cutters. In molding-machines all the work is performed by revolving cutter-heads having variously shaped knives. These cutters are used singly, as in some panel-machines, and project through the table on which the work is laid, or they are arranged in gangs and series so that the wood in pa ing through the machine is exposed succe ively to all the cutters. By this gang-system of cutters it is po ible to cut moldings and edgings of the most complicated pattern. One form of the machine has the cutters between the cutter-arbor bearings, and is known as a matching - machine or wood planing machine, or an inside -molding machine. In another form the cutters project up through the table and are arranged to work upon the inside edges of moldings. This type is known as the edge - molding machine. Sometimes called carving-machine, variety - planer, or relief paneling machine. 2. A machine for making molding from an artificial composition. The material is forced from a hopper by a compre or, is carried by an apron beneath a die-wheel, and after being shaped by this it is delivered on a table. 3. In sheet- metal working, a rolling-machine with shaped rollers of which one is the counterpart of the other, for molding sheet-metal into shape for cornices, balusters, etc.-4. In founding: (a) A machine for making loammolds in flasks from small patterns carried by the machine. (b) A gear-molding machine.Gear-molding machine, an apparatus for molding large gear-wheels from a pattern of a small section of the gear, as of two teeth and the interdental space. - Stone-molding machine, a machine for working stone moldings. It resembles one form of stone-saw, but differs from it in having the frame which carries the revolving grinder adjustable, by means of a screw beneath, to the thickne of the slab. The grinder is kept constantly supplied with moist sand.-Surface-molding machine, a form of molding-machine with double-edged cutters and a rapid reverse motion. It is used to cut scrolls and plain or molded designs on the surface of solid wood, to rout such work as ends of pews and stairs, to form grooves for inlaid work, to make tracings for carving, etc.