he best method ofgating. Judgment should be used as tohow the mould will fill up, and the gateshould be arranged so as to prevent themetal from cutting a mould or washingsmall cores. The surfaces of the castingswhich are to be machined, should be avoid-ed in gating. Many castings are missrunby the… … FIG. II.Drag rolled over and parting- made. in the same direction as the metal. In somecases it is well to have a gate made in wood,so that it can be rammed up in the mouldwhen making the plate, although in mostinstances the gate can be cut after the pat-terns are drawn. When you require a num-ber…
Patternmaking
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