GLUING

_Necessity of Good Joints._--After the selection and preparation of the

material for the stock, the next important general process that demands

attention is gluing; for good cabinet work implies good glue and a

knowledge of how to use it. Prepared glue, such as is sold in bottles,

is unsatisfactory for work of any consequence. A good woodworker

always has his own glue pot and sees to it that it may be made ready

for use on short notice. The glue should be fresh, thin, and hot. It

should be applied quickly in a warm room and the parts to which it is

applied clamped up quickly before the glue chills. It is the glue which

penetrates the wood that holds the parts together and not a layer of

glue between the joined edges or surfaces. It is therefore evident not

only that joints and surfaces should be well smeared with glue, hot

and thin enough to be quickly absorbed, but also that the parts should

be clamped up quickly while the glue is still hot so as to prevent any

surplus from remaining in the joint. This is an additional reason for

making close fits in all joints--in those which are to be glued up as

well as in those which are not. It is a common fault of beginners to

be satisfied with loose mortise and tenon joints, counting upon the

glue to fill up the spaces. Much of the furniture found in the markets

falls to pieces for the same reason. Such work should never be allowed

to pass. It is based upon an entirely mistaken notion of the true

office of glue and is nothing more nor less than a falsehood in wood.

[Illustration: Method of holding framing parts square while glue is

setting]

_Systematic Methods Required._--As in the preparation of stock and

working it up, so in gluing, system is all important. The hand screws

or clamps should be made ready and adjusted to the required width so

that they may be quickly placed in position as soon as the glue is

applied. The whole process must be managed as quickly as possible

because the joints must be tested before the glue has had time to

set. A carpenter's large square should be used for testing the right

angles, since it is more reliable than the small try squares. It will

frequently be found necessary to hold framing pieces square while the

glue is hardening. This can easily be done by nailing small strips

of waste stock across the parts, as shown in the drawing. A beginner

should be cautioned not to attempt to glue up too many joints at one

time. Two opposite corners of a framing piece should be glued up

separately and left to set before the attempt is made to glue the whole

rectangle together. The two remaining joints, however, should be glued

and clamped together at the same time.

The Library of Work and Play: Home Decoration · 第 70 / 143 题