While I can't help you with the Timms cassettes I will tell you what we use.
We use the cryomolds from Tissue Tek.
They work well for us.
Hazel

> -----Original Message-----
> From:	mward@wfubmc.edu [SMTP:mward@wfubmc.edu]
> Sent:	Wednesday, January 16, 2002 10:04 AM
> To:	histonet@pathology.swmed.edu
> Subject:	cryostat molds
> 
> Martha Ward writes:
> 
> I am looking for an insert for "Timms" cassettes.  The ones we have are
> >12 years old and we are down to the last 4.  We use them to freeze our
> skin punch bxs. as well as renals in liquid nitrogen.  They are white, 1
> inch square, and the circle is 3/8 inch in diameter.  I am hoping that
> someone out there can help me find these.  I looked in every catalog we
> had with no success.  Thanks in advance!
>