Most man-made materials used in cabinetmaking are basically composed of wood dust in a resin matrix – there is no traditional grain structure to resist withdrawal forces. Fortunately, there are solutions:
Confirmat screws were developed specifically for edge-to-face joining of particle-based products like melamine board. They have deep threads on an oversize shank, a clearance-hole diameter shoulder beneath the head, and a head that is just slightly larger than the shoulder. Installation requires a special 3-step drill bit, but the result is a tight, strong joint.
RTA screws make stronger joints than Cabinet Connecting screws, but the construction is “fussier.” The screws have large, wafer heads, blunt tips, and machine screw threads that mate with small cylindrical cross-drilled “barrel nuts.” Installation requires precise drilling of two blind holes, but the system can be used with many materials and joint conditions.
If assembly speed and cost are important, use an extra-long cabinet screw, such as our FSL’s or ProMax™ series screws. Predrill when working close to the edge (even when using auger point screws), since man-made materials are prone to crumbling. Note that it is best to consider this a permanent clamp while an adhesive is curing, rather than a primary fastener.