Re: Re; Air bubbles in polyurethane castings

Date: Sat Jul 25 1998 - 04:57:12 EEST

In a message dated 98-07-24 01:50:48 EDT, writes:

<< Remember when using fast urethanes the heat and pressure of the cure will
 effect the dimensional outcome of the part. Cure the mold at the
 temperature of the exotherming resin and at the appropriate pressure. If
 you are chasing + or - .002 tolerances like most of us. >>
I understand that the mold will expand with temperature as well. So there is
an optimum temperature that will yield the correct dimensions. Might take you
a few test tries to find it though.
Andy Scott LMCO

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