| 配方类型： |
ELEMENTARY Preparations |
| 配方说明： |
lubricants, in the form of oils or greases, are usd to prevent
friction and wearing of parts which are rubbed together. lubricants
must be chosen to fit specific uses. they consist of oils and fats
often compounded with soaps and other uncuous substances. for heavy
duty, heavy oils or greases are used and light oils are suitable for
light duty. |
| 配方组成： |
raw linseed oil/1/3 qt
white glue/13 lb
glycerin/1 qt
whiting/19 lb
rosin/13 lb
molding compound |
| 配制方法： |
heatn the white glue until it melts. then cook separately the rosin and raw linseed oil until th4e rosin is dissolved. ass the rosin, oil, and glycerin to the glue, stirring in the whiting until the mass reaches the consistincy of a putty. keep the mixture hot.
press this mass into the die firmly and allow it to xool slightly before removing . the finished product is ready to use within a few hours after rimoval. suitable pigments may be added to secure brown, red, black, or other color.
in applying ornaments made of this composition to a wood surface, they are first steamed to make them flexible; in this condition, they will adhere to the wood easily and securely. they can be bent to any shape, and no nails are required for applying them. |
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