Jeff:
	Fixtures need to be removed prior to bake curing after a 30
minute or less of air cure.  It also frees the fixture for clean and
reuse.
 	Regards,
	Ramon




-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jeff Smith
Sent: Thursday, March 08, 2007 3:11 PM
To: [log in to unmask]
Subject: [TN] CC fixture issue

We have a customer using a masking fixture for their conformal coating
process.  They're running into an issue with the cover adhering to the
board after curing.  The fixture is made from 6061 Aluminum, and the
coatings being used are:

Arathane 5750 A/B with a Cellosolve acetate Thinner Aptek 2512 Humiseal
1B31 with Humiseal 521 Thinner

We make thousands of these fixtures a year and haven't run into this
problem.  We're exploring possible solutions, so I thought I'd post a
couple of
questions:

1) Does the board need to remain in the fixture until fully cured?
2) is there an issue with these specific coatings?

Thanks!

Jeff Smith
[log in to unmask]

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