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Plaster – Pressure-forging

Plaster

Sulphate of lime or plaster of Paris. See GYPSUM.

A joint board or match-part prepared in plaster. See MATCH-PART.

For weight of a superficial square foot of different metals, see WEIGHT OF PLATES.

A wheel having the rim and hub connected by a plate instead of arms.

A weighing-machine provided with a platform on which to place the object to be weighed. See WEIGHING-SCALES.

See PLATINUM ALLOYS.

A kind of pincers with which to seize, bend, break, or cut small objects.

A conical clay bott, or bod, secured to the end of the bott-stick, with which to plug the tap-hole of the cupola. See BOTT-STICK.

See BLACK LEAD; GRAPHITE; FACING.

Usually a conically shaped piece of lead or iron, suspended on a cord, with which to obtain a perpendicular to the horizon. See LEVEL.

A common name in foundries for the crucible. See CRUCIBLE.

Usually a substitution of hydraulic or other machinery for the regular processes of hammering and rolling metals into the required form.