06-01-2022, 02:23 PM
Biscuits are supposed to fit snugly in the slots so they can do their job aligning parts. Loose biscuits can be made thicker by storing at a higher RH, biscuits that won't fit into the slot by storing in a lower RH environment or putting them in the toaster oven at 200F for an hour or two.
With sheet goods I always glue in the biscuits as they add substantially to the strength of the joints. When using them to align boards for a panel glue up, however, I never do because they don't add anything to the strength of the glued joint. In all cases, I'm looking for biscuits that fit snugly in the slots, that can be pushed in with your thumb and pulled out with your thumb and forefinger.
John
With sheet goods I always glue in the biscuits as they add substantially to the strength of the joints. When using them to align boards for a panel glue up, however, I never do because they don't add anything to the strength of the glued joint. In all cases, I'm looking for biscuits that fit snugly in the slots, that can be pushed in with your thumb and pulled out with your thumb and forefinger.
John