[Histonet] cracks in paraffin

From:"Bales, Candy A"

Greetings. I am writing on behalf of a friend who is in need of
Since purchasing a new embedding center, she has noticed that her
paraffin blocks are cracked when she removes them from the molds. She
has checked her temperatures on the embedding machine. She has not
changed paraffin brands/types. She uses paraplast plus.
She has tried spraying the molds. 
Any suggestions would be appreciated.
Thank you
C. Bales, H.T.
University of Texas Dental Branch
Houston, TX
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