High School Manual Training Course in Woodwork, Including Cost of Equipment And Supplies And Studies On Trees And Wood
The book High School Manual Training Course in Woodwork, Including Cost of Equipment And Supplies And Studies On Trees And Wood was written by author Ritchey, Samuel Edward, 1866- Here you can read free online of High School Manual Training Course in Woodwork, Including Cost of Equipment And Supplies And Studies On Trees And Wood book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is High School Manual Training Course in Woodwork, Including Cost of Equipment And Supplies And Studies On Trees And Wood a good or bad book?
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It cannot be used out- side, as it softens under moisture. It is a most con- venient varnish for "c[uick finishing." Besides the use of shellac as a A-arnish to preserve and beautify wood, it is much used in the arts and manufactured articles. Shellac varnish must be "agitated" or stirred up every day, or the parts separate, and if left but a short time in this condition cannot again be mixed to make good varnish. Copal Varnish' Copal varnish is a compound of copal gum, boiled linseed oil, and ...turpentine. The copal gum is either fossilized gum from ancient buried trees, or the newer gum or resin, which flows from incisions made in certain trees in the tropics, chiefly in Africa. The gum comes to the factories in the original packages, in sacks of jute or teak casks, and is emptied on long tables and sorted, the experienced sorter judging at a glance as to the clearness, hardness or purity of the lump of gum. The linseed oil is pressed from flaxseed, and cannot be used in its crude state, but must be boiled, usually in huge kettles holding sometimes 500 gallons.
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