Propolis Propolis Propolis or bee glue is a resinous mixture that honey bees produce by mixing saliva and beeswax with exudate gathered from tree buds, sap flows, or other botanical sources. It is used as a sealant for unwanted open spaces in the hive. Propolis is used for small gaps (approximately or less), while larger spaces are usually filled with beeswax. Its color varies depending on its botanical source, with dark brown as the most common. Propolis is sticky at and above , while at lower temperatures, it becomes hard and brittle. While foraging, worker bees primarily harvest pollen and nectar,
Wood glue do not adhere well to hardened PVA glue. PVAs will creep under constant load. "Elmer's Glue-All" is an example of PVA adhesive. Aliphatic resin emulsion, commonly referred to as "yellow glue" or "carpenter's glue", has a similar use profile and relative ultimate strength as PVA. The two glues differ in grip characteristics before initial set, with PVAs exhibiting more slip during assembly and yellow glue having more initial grip. Brands include "Titebond" and "Lepage". Contact cement for wood veneers. Hot glue for temporary uses. Homemade glue for paper, wood, and internal uses. Several wood glues have poor "gap-filling" ability, meaning