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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 26 Apr 2001 17:18:47 +0900 |
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$)CThank you for your useful and prompt response.
Yes, Pete I am talking about drill bits for PCB fabrication.
And what I want to know is what kind of bit defect is likely to happen by
incorrect resharpening compared to new bit production.
Regards
Jay Ju
----- H8<[GQ ;g6w : YoungHwan Ju/SimmTech ( 2001-04-26 05:17 PM ) -----
peter.duncan@s <v=E@N : "TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
t.com.sg B|A6@N :
A&8q : Re: [TN] The standard bit inspection spec
2001-04-26
04:56 PM
Hi, Jay Ju,
Are you talking about drill bits for PCB fabrication? If you are, I cannot
give you an inspection spec number, but major defects caused by incorrect
resharpening might include incorrect hole size and smearing of the hole
walls. Smearing will have to be cleaned up by reaming the holes prior to
plating or you will not achieve proper connection to inner layers, good
plating adhesion or even plating thickness.
If the bits are for a different application, please specify what it is.
Regards
Pete Duncan
Young Hwan Ju
<yhju@SIMMTEC To: [log in to unmask]
H.CO.KR> cc:
Sent by: Subject: [TN] The standard bit
inspection spec
TechNet
<[log in to unmask]
ORG>
04/26/01
02:08 PM
Please
respond to
"TechNet
E-Mail
Forum.";
Please
respond to
yhju
Hi, all subscribers
In incoming inspection of both new bit and resharpened bit, Can you make
me know the standard spec if anyone knows about that.
And I' would like to know the exclusive major defects caused by wrong bit
resharpening operation.
regards
Jay Ju
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