How long does it generally take for a cast to dry?

A cast typically takes about 24 hours to dry effectively. This timeframe allows the cast material, which often includes plaster or fiberglass, to harden and gain the necessary strength to support and immobilize the affected area. Although the outer surface of the cast may feel dry sooner, the inner layers may still be setting and might not provide the expected support until the full drying period has elapsed.

Choosing 24 hours aligns with the standard practice for most casts, as it ensures that the material has properly cured. Different factors can slightly influence the drying time, such as humidity and temperature, but 24 hours remains the general guideline. A cast believed to be dry earlier may still pose a risk of being fragile and could lead to complications if subjected to weight or movement too soon.