Assembling Dowelled Work

One side of the work should be dowelled, the pegs tapped fully home, surplus glue wiped off and the projection of each peg checked with its corresponding socket; it can then be dowelled into the other member without waiting for the glue to harden. If a trial assembly is made in the dry (unglued) state, spare dowels should be sanded to a loose fit and replaced with tight dowels in the final gluing up, for if tight dowels are used it may prove impossible to withdraw them without breaking the pegs. For assembly, single-application glues (hide, Cascamite One Shot, etc.) should be used and applied to the sockets only, for very liquid glues or separate hardeners applied to the pegs may swell the fibres and prevent entry. Sockets out of line or bored at an angle should be filled with glued pegs and rebored correctly, for any bending or crushing of the dowel-pegs will destroy much of the ultimate strength. Woods which split easily may have to be nipped with a G-cramp/C-clamp across the thickness if the dowel is tight and the surplus glue cannot readily escape. Sash-cramps across the assembly may be necessary to pull the dowels up.

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