Dremel 876 Specifications download pdf (Page 32)

Release Time - Length of time needed before a casting can be

removed from a mold.

Relief - A raised design.

Renuzit - A dry cleaning material used to clean rubber stamps.

Rib - A rubber, metal or wooden tool used to facilitate wheel

throwing of ceramic forms.

Rod, Actuating - That portion of the kiln sitter which drops as the

cone deforms, causing the kiln to shut off.

Rolling Glaze - Covering the inside of ware by pouring in thinned

glaze, rolling it around the inside surface and then pouring it out.

Rouging - Applying color lightly with cloth or finger, or with a pounce.

Rubber Kidney - A kidney shaped piece of hard rubber used in

shaping wheel-thrown pieces.

Running - The fluidity of a glaze at its maturing point and before it

cools and hardens.

Rhythm - The flow and movement of lines and color in a design.

Sagger - A refractory support for firing porcelain plates and other

shapes that might warp from their own weight; also a support for

firing glass.

Sable - Animal hair used to make the finest, most resilient brushes.

Red sable is considered the finest of the hair types.

Satin - A glaze that produces a soft sheen between a gloss and a

matte surface.

Saturation Point - Point at which an object can absorb no more

moisture.

Scoring - The marking into the surface of the piece.

Scum - A haze that forms on fired gold and luster from insufficient

ventilation in the kiln.

Sealer - A coating which closes the pores of bisque or other porous

materials.

Seam - The ridge left on greenware at points where the mold

sections join. The surface areas of a mold that meet when the mold

is banded together.

Secondary - Those colors on the color wheel that are made by

mixing two primary colors together; green, violet and orange.

Set-Up-Time - Length of time that casting slip must remain in the

mold to form the wall of the casting.

Setter - A refractory holder on which porcelain dishes are fired to

prevent warping; see saggers.

Settle Out - Particles of color settle to the bottom of the jar when

the water balance is disturbed.

Sgraffito - Cutting through color or a layer of colored clay to produce

a design.

Shade - Any hue that has been deepened by the addition of black.

See tints and tones.

Shelf Cone - Pyrometric cone used to tell the temperature at

which the temperature on the shelf has been completed using heat

work. The actual cone temperature.

Shelf Support - See Post.

Shivering - Where glaze peels off from the ware because the ware

shrinks more than the glaze; a body fit problem.

Short - Stiff clay body caused by low moisture content; lacking

plasticity.

Shrinkage - Decrease in the size of the clay object as a result of

drying and firing. About 5 percent in low-fire.

Silica - One of the basic ingredients in glaze.

Silicate of Soda - Water glass. See Sodium Silicate.

Silk Sponge - A fine textured sponge used for decorating.

Sitter - A device that is activated by the deformation of a

pyrometric cone, causing the kiln to shut off.

Slab - A rolled out section of clay.

Slake - To reclaim dried up clay; it is pounded into small pieces

and covered with water; only completely dry clay can be slaked.

All modeling clay may be reclaimed. However, reclaiming clay to

return to the slip batch is a dangerous practice and should be

avoided.

Sling - Burlap used to cradle clay to make a slab bowl.

Slip - A fluid suspension of clay and other chemical materials in

water.

Slip Trailing - Decorating leatherhard greenware with slip applied

from a bulb or bottle with a narrow nozzle.

Slurry - A clay body of creamy consistency; used for joining moist

clay together.

Soak - To hold a kiln at one temperature for a period of time.

Soda Ash - A deflocculent.

Sodium Silicate - Water Glass; a deflocculent.

Soft Fire - Greenware fired to cone 018; accepts underglaze color

in the same manner as greenware but is more durable.

Soluble - Able to be dissolved in water.

Solvent - Any fluid that will dissolve or remove color.

Spare - The scrap of clay that is cut off of every casting an area of

the mold that increases the volume of the mold; see pour gate.

Sponge - See specific types of sponges; seawool, silk or elephant.

Spatter - Method of applying flecks of color.

Glossary

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Dremel 876 Specifications Page 32

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