What are the two general methods of repairing a hole?

• A. Weld the Hole From Inside Out
• B. Seal With Tape and Epoxy
• C. Put Something Into It, Put Something Over It
• D. Patch With a Metal Patch

Answer: (C)

The two general ways to repair a hole are to put something into the opening to block the flow, or to put something over the opening to seal it. Filling the hole from inside uses plugs or fillers to stop water/air from coming through, while patching uses a plate or patch laid over the hole and secured to withstand the pressure and seal it.

These broad methods cover most damage-control repairs. Welding a hole from inside out is a specific technique that isn’t universally applicable or practical in all situations. Sealing with tape and epoxy is a temporary patching method, which falls under the broader patching approach. Patch with a metal patch is also a patching method, again fitting under the general idea of covering the hole. The key idea is the choice between inserting a stopper inside or covering the hole with a patch outside.