Instructions in the manipulation of hard rubber or vulcanite for dental purposes . vel, by gentle taps with a hammer upon the metalthe whole of the plaster will separate in a body. Theplaster readily separates from the rubber, if the mould hasbeen coated as directed. Now wash, using a stiff brush, andthe case will be ready for the finishing process. 32 INSTRUCTIONS FOR MAKING VULCANITE WORK. At this step the operator should immediately remove allthe plaster from the flasks, and wash and dry them. Whenfirst opened, they are much more easily cleaned than whenthe plaster has heen allowed to dry a
Instructions in the manipulation of hard rubber or vulcanite for dental purposes . vel, by gentle taps with a hammer upon the metalthe whole of the plaster will separate in a body. Theplaster readily separates from the rubber, if the mould hasbeen coated as directed. Now wash, using a stiff brush, andthe case will be ready for the finishing process. 32 INSTRUCTIONS FOR MAKING VULCANITE WORK. At this step the operator should immediately remove allthe plaster from the flasks, and wash and dry them. Whenfirst opened, they are much more easily cleaned than whenthe plaster has heen allowed to dry and become cementedto the metal by oxidation: besides economy in time, they are in a good condition when nextrequired for use, and will lastmuch longer than if left with theplaster adhering. The vulca-nizer should also be washed, to re-move the deposit formed within it. FINISHING. With coarse files remove thesurplus rubber. Files are madeespecially for this work, straight,half-round for the outer edge, andcurved for the lingual surface ofthe plate. Scrapers then come in Fig.
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Keywords: ., bookcentury1800, bookdecade1860, bookidinstructions, bookyear1865
