. The teacher's handbook of slöjd : as practised and taught at Naäs, containing explanations and details of each exercise. ) and melted by heat. The glue-pot consistsof two pans usually made of cast-iron or tin-plate. Thelarger of these, the outside pan, is, when in use, half filled 120 HANDBOOK OF SLOJD. with water, and the smaller one, the inside jpan or glue-potproper, in which the glue is placed, rests upon a rim or flangeround its mouth. This inner pan should always be linedwith tin. The water in the outer pan prevents the glue fromburning, (an accident which must always be carefullyavoid
. The teacher's handbook of slöjd : as practised and taught at Naäs, containing explanations and details of each exercise. ) and melted by heat. The glue-pot consistsof two pans usually made of cast-iron or tin-plate. Thelarger of these, the outside pan, is, when in use, half filled 120 HANDBOOK OF SLOJD. with water, and the smaller one, the inside jpan or glue-potproper, in which the glue is placed, rests upon a rim or flangeround its mouth. This inner pan should always be linedwith tin. The water in the outer pan prevents the glue fromburning, (an accident which must always be carefullyavoided), and as the contents of the glue-pot are surroundedby warm water, they may be kept fluid and fit for use a con-siderable time after the pan has been removed from the fire. If glue is wanted in a hurry, the cakes may be put in atowel or a similar piece of stuff to keep the glue from beingscattered about, and broken to pieces with a hammer. Thepieces are then put into the glue-pot and stirred during boil-ing, to prevent unmelted glue sticking to the bottom. Thismode of preparation is quite as good as the Fig. 86. Glue Pot Outside Pan. i. (inside pan) and Brush. GJue is applied with a strong brush, of which there shouldbe two sizes, one for large surfaces and one for small sur-faces, , mortise holes, etc. Liquid Glue.—The addition of acetic acid to melted glueprevents putrefaction, and, without lessening its cementingpower, keeps it liquid at ordinary temperatures. Liquidglue may be made as follows :—Four parts of good glue aremelted in four parts diluted acetic acid, in the outer pan, or JOINTING. 121 on the top of an oven. One part spirits of wine and a smallquantity of alum are then added, and the mixture is kept ina wide-mouthed bottle, the cork of which has a hole to admitthe brush. This glue remains liquid at + 14° to 18° C, and does notsolidify until + 8° to 12° C.; it is very convenient for smallarticles, as it is always ready and in good cond
Size: 1991px × 1255px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectmanualt, bookyear1892
