Soaking a faced block can alleviate what common issue?

• A. Chatter on the sections
• B. Tearing of tissue
• C. Air bubbles in embedding
• D. Over-staining of sections

Answer: (A)

Soaking a faced block helps soften the paraffin at the block surface and make it more uniform. With a smoother, slightly softened surface, the knife meets less resistance and cuts more cleanly, reducing the vibrations that cause chatter in the section. The result is a smoother ribbon and fewer wavies or ridges in the cut tissue.

Other issues—tearing of tissue, air bubbles in embedding, and over-staining—stem from different problems (blade condition, embedding technique, and staining protocol, respectively) and aren’t primarily resolved by soaking the block face.