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January 2019

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From:
Richard Kraszewski <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Richard Kraszewski <[log in to unmask]>
Date:
Fri, 11 Jan 2019 13:27:56 +0000
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Agreed that they should be masked with a wide tolerance on acceptability.



IE minor  over spray or incursions on an edge should be a process indicator, not a defect.



Rich  Kraszewski 

Senior Staff Process Engineer

Phone: (920) 969-6075



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-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of lduso - Diamond-MT.com

Sent: Thursday, January 10, 2019 4:15 PM

To: [log in to unmask]

Subject: Re: [TN] Conformal Coating and Unplated Mounting Holes



[EXTERNAL] This email was sent from outside of Plexus.  Use caution when opening attachments or links from unknown senders.

.

The most common method is to call them out to be masked but with no dimensions so we go with 1/4" or 5/16". Often, when I ask if a dimension is needed, they say to just ensure the bore is free. Next most common would be specific dimensional masking. I often get this from aerospace customers.

The "newbies" to coating will often call out an exotic dimension that cannot be masked with a common sized, easily available tape-dot. Which substantially adds cost to have them custom cut. Functionally, if nothing metallic will be exposed, it doesn't matter how big it is.



Lloyd Duso

Diamond-MT

(814) 535-3505

www.Diamond-mt.com





On Thu, Jan 10, 2019 at 4:36 PM Jack Olson <[log in to unmask]> wrote:



> Is it more common to conformal coat unplated mounting holes?

> or designate a clearance diameter on the assembly drawing?

>


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