1. Woodworking adhesive: Woodworking adhesive is a kind of super adhesive specially used for wood bonding. Strong adhesion, can effectively repair large-area cracks. Common woodworking adhesives include rabbit hair and Han Gao and other brands.
2. Epoxy resin adhesive: Epoxy resin adhesive is a kind of adhesive with high strength and high adhesion, which is suitable for repairing serious cracks and damaged wood. However, epoxy resin adhesive needs a long curing time, usually more than 24 hours.
3. Polyurethane glue: Polyurethane glue has good elasticity and adhesion, and is suitable for repairing wood cracks. Its curing time is very short, usually within a few hours.
When choosing glue, make sure that the glue you choose is compatible with the type of wood you want to repair. At the same time, according to the size and depth of wood cracks, choose the appropriate amount of glue. It is suggested to do experiments on small wooden blocks before using glue to ensure that glue can effectively repair cracks.
The steps of repairing wood cracks with glue are as follows:
1. Crack cleaning: Use sandpaper or grinding wheel to polish the wood surface around the crack to make it smooth and clean, so that the glue can be better attached.
2. Joint filling: squeeze a proper amount of glue into the gap to ensure filling. If necessary, it can be polished gently with a scraper or fine sandpaper to make the glue fully contact with the wood surface.
3. Glue application: Use a scraper or other tools to compact the gap filled with glue, so that the glue can be closely attached to the wood.
4. Curing: Place the repaired part in a warm and ventilated place and let the glue naturally cure. Depending on the characteristics of the selected glue, the curing time may be between a few hours and a day.
5. Polishing and coloring: After the glue is completely cured, gently polish the repaired part with sandpaper or grinding wheel to make it smooth with the surrounding wood surface. Then, as needed, paint similar to the color of wood is used for coloring.