Workshop Receipts ...E. & F. N. Spon, 1883 |
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Página 23
... heat an iron to a dull red heat , and hold it over the chuck till the mixture and gutta are melted and liquid ; coil the iron a little , and with it stir the cement until it is homogeneous ; chuck the work , lay on a weight to enforce ...
... heat an iron to a dull red heat , and hold it over the chuck till the mixture and gutta are melted and liquid ; coil the iron a little , and with it stir the cement until it is homogeneous ; chuck the work , lay on a weight to enforce ...
Página 24
... heat gradually increasing almost to a white heat . This cement is very hard , and presents complete resistance alike to a red heat and boiling water . Another method : -To equal parts of sifted per- oxide of manganese and well ...
... heat gradually increasing almost to a white heat . This cement is very hard , and presents complete resistance alike to a red heat and boiling water . Another method : -To equal parts of sifted per- oxide of manganese and well ...
Página 26
... heat , rub over equal parts of olive oil and turpentine , and finally brush over with powdered coke . Galvanic ... Heat the metal to a bright red , cool quickly in water , reheat , and then anneal by cooling slowly in ashes . Or , heat ...
... heat , rub over equal parts of olive oil and turpentine , and finally brush over with powdered coke . Galvanic ... Heat the metal to a bright red , cool quickly in water , reheat , and then anneal by cooling slowly in ashes . Or , heat ...
Página 27
... heat for three or four days in iron boxes in a furnace . Casehardening Iron . - Procu.e a quantity of old boots , burn these until they become charred , beat off the black and charred portion with a hammer , until sufficient powdered ...
... heat for three or four days in iron boxes in a furnace . Casehardening Iron . - Procu.e a quantity of old boots , burn these until they become charred , beat off the black and charred portion with a hammer , until sufficient powdered ...
Página 35
... heating up , boil from 10 to 30 minutes ; wash in 2 waters . All dark shades of this and the four following colours may ... heat up ; boil 15 minutes ; lift , and cool to 120 ° , by throwing out part of the liquor , and filling up with ...
... heating up , boil from 10 to 30 minutes ; wash in 2 waters . All dark shades of this and the four following colours may ... heat up ; boil 15 minutes ; lift , and cool to 120 ° , by throwing out part of the liquor , and filling up with ...
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Termos e frases comuns
allowed alum ammonia antimony applied bath blue boiling borax bottle brass brush burnished calcined carbonate chloride clean cloth coat cold collodion colour cool copper covered cyanide deposit diluted dipped dissolved dried edge filter fire fustic gallons gelatine gilding glass glaze glue gold grains ground gutta-percha heat hydrochloric acid immersed inch iron leather lime linseed oil liquid liquor litharge logwood marble melted mercury metal mixed mixture mould nitrate nitrate of silver nitric acid oxide paint paper pearlash piece pint plate polish potash powder precipitate prepared pure quantity removed sal ammoniac salt seed-lac shellac soap soda soft solder solution spirits of wine stirring stone sufficient sulphate sulphuric acid surface thick thin tint tion turpentine varnish vessel warm wash white-lead wire wood yellow zinc
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