Which tool is used to join wood parts with a pre-cut biscuit inserted during glue-up?

• A. Plunge Router
• B. Tin Nips
• C. Biscuit Jointer
• D. Pneumatic Nipper

Answer: (C)

When you’re joining wood with a pre-cut biscuit, you need to create precise slots for the biscuit to fit into. The tool designed for that task is a biscuit jointer. It cuts matching slots in both pieces at the correct depth and spacing so the biscuit can slide in with glue and align the parts accurately during glue-up. Once the pieces are clamped, the biscuit swells slightly with the glue, giving you a strong, square joint with more surface area for bonding. The other tools aren’t used for this purpose—a plunge router cuts various grooves but not specifically the standard biscuit slots, while tin nips and pneumatic nippers cut metal or trim fasteners, not wood joints.