Duracrete grout

Duracrete grout was a substance that could be used to repair damage to starships. At some point between 0 ABY and 3 ABY, the smuggler Han Solo used duracrete grout to patch up stone mite bite trails within his YT-1300 light freighter, the Millennium Falcon, after his co-pilot Chewbacca removed an infestation of the mites. After several hours of making repairs, Solo had duracrete grout all over his shirt, which he wrote complaints about in the logbook that would eventually become known as the Smuggler's Guide.

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