Researchers studied how to make solid fuel from a mix of rice husk and pine sawdust to meet energy needs sustainably. They experimented with different factors like temperature and biomass proportions to make strong briquettes. The briquettes were found to be durable and met industry standards when made at 110°C with up to 60% rice husk. The compaction time also affected the density and elasticity of the briquettes. These findings can help in designing a process to make solid fuel from these mixed biomasses.