gluing. Set the clamp jaw openings to suit the width
middle. This is especially true when you are gluing
of the assembled pieces of stock. Allow for blocks
up wide pieces of material. Next, turn the stock
on the edges of the material to prevent marring.
completely over on a table or bench so it rests on
Make two jig blocks for each of the bottom clamps
the ends of clamps A and B. Place clamps C and
(fig. 3-48) to hold the clamps upright during the
D, and adjust the same as clamps A and B.
gluing operations. Again, note the arrangement of
pieces so the annual ring growth will tend to offset
NOTE: Clamping the midsection of the material
warpage. Be sure the direction of the grain is the
first will give the excess glue squeezed out of the
same in all the pieces to be glued.
joint more outlets.
Place glue on the edges of the boards you are
Now examine the job carefully to see that all the
joining. Rub the stock together to spread the glue
clamps are properly set and that all the glued joints
evenly and force out any air bubbles. If the ends of
have been properly drawn up. Remove the job to a
the joints come apart before tightening the clamps,
convenient spot where it will be out of the way until
use pinch dogs to hold the boards together
needed. If the job stays on the bench, excess glue
temporarily. Put the middle clamps in place with
squeezed from the joint will stick to the bench top.
the blocks in front of the jaws. Adjust and tighten
You should clean all waste glue from the top of the
them. Then adjust and tighten the clamps on the
ends, squeezing out all excess glue.
When the glue has jelled, remove it with a glue
Inspect the clamps every few hours to make sure
scraper. Then wipe the surface with a piece of cloth
the stock is not warping. If any of the edges pull
dipped in hot water. If it is a rush job, the clamps
apart before the glue has dried, adjust the clamps to
may be removed in 4 hours. However, the joints
apply equal tension throughout.
cannot be guaranteed to hold if the clamps are
removed too soon. Best results will result from
NAILS, BRADS, DOWELS, AND
clamps left on for 12 hours. You should plan
construction of the job to provide time for good
results in gluing operations.
Fastening materials such as nails, brads, dowels,
and corrugated fasteners work in combination with
The edge-to-edge method of gluing up stock has
glue in pattern construction. Many of the materials
two purposes. It is used most often to get material
used in the HT rating are the same as those found
that will be thin in comparison with its width. Use
in other woodworking trades. Nails provide the
this method to glue up material that has to be wider
least holding power, screws provide better, and bolts
than any on hand.
provide the best holding power of all. Wood screws
may be combined with glue and paper in parted
In edge-to-edge gluing, select, dress, and rip the
pattern turning. Use dowels for the alignment of
material the same way as you did for face-to-face
Figure 3-48.--Edge-to-edge gluing.