LignoForce lignin, a product obtained in a specific stage of kraft lignin production from black liquor of the pulping process, possesses unique characteristics and is cheaper than ordinary kraft lignin. This project studied this particular lignin as a substitute for corncob/Superbond fillers in PF glue mixes for plywood production. The lignin was evaluated in lab tests and in plywood mill production trial. PF glue mixes with 50% corncob/Superbond substituted by the lignin were produced and evaluated for plywood production. The test glue mixes were found to be comparable to the control in viscosity, stability and bond performance. This project demonstrated that LignoForce lignin is a viable substitute for corncob/Superbond fillers in the plywood industry. It should be noted that the procedure to incorporate LignoForce lignin into the glue mix is simple but different from the traditional mixing procedure during the glue mix preparation. The test glue mix with LignoForce lignin has the potential to be applied by different methods, such as glue spreader, curtain coater, and glue spray line.