Date: Wed, 22 Mar 95 15:22:34 CST
Subject: Re: 2 different view about Transoptic mount
From: GMORGAN%geoadm.gcn.uoknor.edu@geology.wisc.edu (by way of johnf@geology.wisc.edu)

Status: OR





I've noticed that the two individuals who had problems with Transoptic

powder

described it as a "pressure-setting" media. Transoptic is in reality a

thermal plastic; Buehler's instructions for molding are T = 138-143 degrees

C,

and 4200 psi. As I understand it, the high pressure primarily serves to

drive out the entrained air (and perhaps water vapor) once the plastic is

molten. Are those of you who had problems with this material running it up

to the prescribed temperature prior to molding? If you are, I'm surprised

at

anyone having problems with the stuff I've been using routinely for years.



George Morgan

Electron Microprobe Operator

University of Oklahoma