We use these drills for scoring lines on already de-panelled PWB's, or
for tight tolerance scoring on the NC bed where the conventional scoring
machine can't cope.
Colin McVean M.Inst.C.T.
Production Manager
Artetch Circuits Limited
Main: 01903 725365
DD: 01903 712926
Email: [log in to unmask]
www.artetch.co.uk
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: 30 August 2006 13:20
To: [log in to unmask]
Subject: Re: [TN] Deburring and Polishing Brushess
Good Mornin'!!
WINK-WINK... ;^) Check out:
http://stevezeva.homestead.com/files/Sharp_drill_for_Habib.doc
Interesting looking drill. It's something I've never seen before...
-Steve Gregory-
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hfjord
Sent: Tuesday, August 29, 2006 12:56 PM
To: [log in to unmask]
Subject: Re: [TN] Deburring and Polishing Brushess
Habib,
I'll ask Steve Gregory to put a page on his webshow, wait until you see
a wink from him here on TN.
It's about a full carbon tool.
Regards
Ingemar Hernefjord
----- Original Message -----
From: "Habib Sahli" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, August 29, 2006 3:48 PM
Subject: Re: [TN] Deburring and Polishing Brushess
> Hello,
>
> I'm interested in burr-free drilling.
> What is IMHO?
> Could you please give more informations or links for documentations.
>
> Best Regards.
>
>
> Habib SAHLI
> Engineering Dept.
> Tel : 00216 72 451 144
> Fax : 00216 72 451 333
> E.mail : [log in to unmask]
>
>
> ----- Original Message -----
> From: "Brian Ellis" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, August 08, 2006 9:43 AM
> Subject: Re: [TN] Deburring and Polishing Brushess
>
>
>> IMHO, avoiding the production of burrs is a better technique than
>> deburring. This implies as near-perfect drill bits as possible, with
>> a controlled geometry to very tight tolerances, the correct
>> rotational speed, pressure and advance and the use of the correct
>> entry and exit materials.
>>
>> The use of abrasives, in any form, is not advisable, as they
>> contaminate the surface with implanted particles, often swaged over,
>> and the plastic matrix of brushes can cause polymer smearing. It is
>> my experience that abrasive cleaning causes more harm than good.
>>
>> I touched on these matters in more detail in my book. (Section 7.2.3
>> for burr-free drilling, 7.2.4 for deburring and abrasive cleaning)
>>
>> Brian
>>
>> Baski Devre wrote:
>> > Dear Technetters
>> > As you know that prior to dry film coating or LPI soldermask
>> > coating, surface preparation is so crucial. it can directly effect
>> > dry film adhesion but we think that deburrinmg of the panels after
>> > CNC drilling operation and prior to electrolytic copper plating is
more crucial.
>> > Does anybody have an application to deburr and polishing of the
>> > panels after CNC drilling. If yes which type of brushes you use for
>> > the first station to deburr and which type of brushes you use to
>> > polish the bord just after the deburring process.
>> > Best Regards
>> >
>>
>> --
>> http://www.cypenv.org Cyprus environment/energy
>> http://www.cypenv.org/worldenv World environment/energy
>> http://www.cypenv.org/weather Cyprus weather
>> http://www.cypenv.org/smf/index.php Environment/energy forums
>> http://groups.yahoo.com/group/cypnature/ Cyprus nature forum
>>
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