In the wet lay-up process, what protects the workbench from epoxy resin?

The wet lay-up process involves the application of epoxy resin to composite materials, and protection for the workbench is crucial to minimize cleanup and damage. Bagging material is specifically designed for this purpose as it serves as a barrier between the workbench and the epoxy, preventing the resin from adhering to or staining the surface underneath.

Bagging material is typically a durable plastic that can withstand the chemicals involved in the process, ensuring that any resin spills or drips are contained and do not affect the workbench. This material is used in conjunction with other components in the vacuum bagging process, often assisting in maintaining proper pressure and distribution of the resin over the composite layers.

The other options offered, while they may have specific functions in the aerospace assembly process, do not provide the same level of protection for the workbench against epoxy resin. For example, breather material is primarily used to allow air to escape and flow evenly during vacuum bagging, while tacky tape serves to seal the edges of the bag. Masking tape is more suitable for temporary applications and might not withstand the corrosive nature of epoxy resin, making bagging material the optimal choice for protecting the workbench during wet lay-up applications.