1. Use wood glue. If the crack is small, it can be repaired with wood glue. First of all, clean up the sawdust in the gap, and then apply an appropriate amount of glue. When the glue dries, fill the gap with sawdust. After the glue is completely dried, it can be polished with polishing paper.
2. Use battens for reinforcement. If the crack is big, we can reinforce it with wooden strips. First, you need to keep the crack clean, and then put a piece of wood along the crack. Fix the slats on the original frame with screws. Glue can be added when necessary to enhance the fixing effect.
3. If it is an aging fracture, you can use a cork nail. First, knock the thinner end of the hammer into the crack in the wood, and then hammer the cork into the wood. The depth of the nail should be such that the top of the cork nail is flush with the surface of the board.
The above are several common methods to deal with the cracked wood of sofa frame, hoping to help everyone. It should be noted that the sofa should be cleaned before repair, and necessary protective measures should be taken to avoid polluting the family environment. If you don't know how to repair it, it is recommended to find a professional maintenance person to handle it.