The quickest way to spread glue in biscuit slots is using a tool tailored for the job. I made my own by grinding the end of a putty knife to match the contour of a biscuit. Squeeze glue into the slot, smear it against the sides of the slot with the knife, and you’re done. Putty knives are cheap enough that I’ve actually made several of these spreaders to suit different sized biscuit slots.
Alice Wallace, San Mateo, California
