Google Modern wood glues—like PVA, epoxy, or polyurethane—are engineered for quick setting and high tensile strength. PVA is great for general woodworking, dries fast, and bonds well to both hardwoods and softwoods. Epoxy gives an almost permanent, waterproof bond and can fill gaps, but it takes longer to cure and is a bit more work to mix. Polyurethane glues are strong and water-resistant, though they can be a bit more brittle once set. Natural adhesives, such as pine resin, birch bark extract, or casein from milk, have been used for centuries. Resin sticks nicely to wood and is fairly strong, but it can become sticky or even melt in hot weather. Birch bark glue is strong and flexible but takes a long time to cure and is more variable in strength. Casein and animal glues bond well to porous wood and are biodegradable, but they’re sensitive to moisture and can shrink or crack over time. So, if you need a fast, reliable, long‑lasting bond—especially in a humid or outdoor environment—modern glues win. If you’re after an antique look or a completely natural, biodegradable solution and can tolerate a longer cure time, tree sap or other natural adhesives can do the job, but expect some trade‑offs in durability and weather resistance.

Sounds like you’re building something truly organic—love the vibe. What’s the project? Maybe a rustic table or a carved box? If you’re looking to keep the resin tacky, just remember to work quickly before it hardens, or mix a bit of water into it to slow the setting. Happy crafting!