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I agree with the use of tape. Rather than using a punch, I like the
idea of just using a hand-held sharp drill bit. Sharp is the key word
here. Then gradually open up using bigger drill bits. When getting
close to the final size, I use a tapered reamer (by hand). This gives a
good finish, and also allows close control of the diameter.
Mike
On 4/12/2016 5:21 AM, Simon Lachlan wrote:
>
> Well, I?ve always done this.
>
> 1)Put a piece of masking tape over the drilling point. Then another
> over that. Push them down tight so they?re making close fit.
>
> 2)Mark the start position through the tapes with a bradawl.
>
> 3)Start drilling with a hand drill and a small, sharp(!!) drill bit.
> Sharp bit. Slow, steady pressure. Nice and straight so no skidding.
>
> 4)Drill a nice little pilot hole. You should be OK by hand and, I?m
> guessing, that the metal isn?t too thick if it?s painted.
>
> 5)Go up a size drill bit and drill with an electric drill, nice and
> steady does it. Keep it slow and straight so it won?t want to jump out.
>
> 6)Keep going up in size until you get the right size hole.
>
> Don?t forget what may be lurking on the other side of the painted
> surface...it may not like being drilled!
>
> Simon
>
> *From:*Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of
> *Michael MacLean
> *Sent:* Tuesday, April 12, 2016 8:30
> *To:* Healeys Help
> *Subject:* [Healeys] Holes in Painted Surface
>
> What's the best way to drill holes in a painted surface?
>
> Mike MacLean
>
>
>
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--
Mike
MGTD (long gone)
BN1 (long gone)
BN2-100M (gone but in good hands)
BJ8
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I agree with the use of tape. Rather than using a punch, I like the
idea of just using a hand-held sharp drill bit. Sharp is the key
word here. Then gradually open up using bigger drill bits. When
getting close to the final size, I use a tapered reamer (by hand).
This gives a good finish, and also allows close control of the
diameter.<br>
<br>
Mike<br>
<br>
<div class="moz-cite-prefix">On 4/12/2016 5:21 AM, Simon Lachlan
wrote:<br>
</div>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Well,
I?ve always done this.<o:p></o:p></span></p>
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</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Put
a piece of masking tape over the drilling point. Then
another over that. Push them down tight so they?re making
close fit.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if
!supportLists]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span
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"Times New Roman"">
</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Mark
the start position through the tapes with a
bradawl.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if
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</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Start
drilling with a hand drill and a small, sharp(!!) drill bit.
Sharp bit. Slow, steady pressure. Nice and straight so no
skidding.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if
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</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Drill
a nice little pilot hole. You should be OK by hand and, I?m
guessing, that the metal isn?t too thick if it?s
painted.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if
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style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span
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</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Go
up a size drill bit and drill with an electric drill, nice
and steady does it. Keep it slow and straight so it won?t
want to jump out.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if
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</span></span></span><!--[endif]--><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Keep
going up in size until you get the right size
hole.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Don?t
forget what may be lurking on the other side of the painted
surface...it may not like being drilled!<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> Healeys
[<a class="moz-txt-link-freetext"
href="mailto:healeys-bounces@autox.team.net";>mailto:healeys-bounces@autox.team.net</a>]
<b>On Behalf Of
</b>Michael MacLean<br>
<b>Sent:</b> Tuesday, April 12, 2016 8:30<br>
<b>To:</b> Healeys Help<br>
<b>Subject:</b> [Healeys] Holes in Painted
Surface<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div id="yui_3_16_0_ym19_1_1460445982370_18849">
<p class="MsoNormal" style="background:white"><span
style="color:black">What's the best way to drill holes
in a painted surface?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="color:black">Mike MacLean<o:p></o:p></span></p>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
<div class="moz-signature">-- <br>
Mike<br>
<br>
MGTD (long gone)<br>
BN1 (long gone)<br>
BN2-100M (gone but in good hands)<br>
BJ8</div>
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