[Healeys] Holes in Painted Surface

Jean Caron vintage_roadster_restoration at hotmail.com
Tue Apr 12 13:28:34 MDT 2016

The method I was shown by the bodyman that paints the cars I bring there always include starting with masking tape, the type used in bodyshop, then marking the spot you want to drill with a pen on the tape, followed by a punch, then a small hole followed by the correct size if not too large otherwise increase the size gradually. Buy good quality drill bits, they wont have as much a tendency to walk, they last a lot longer and can be sharpened. Like anything nowadays, you get what you pay for.


From: Healeys <healeys-bounces at autox.team.net> on behalf of BJ8Healeys <sbyers at ec.rr.com>
Sent: April 12, 2016 2:27 PM
To: 'Healeys Help'
Subject: Re: [Healeys] Holes in Painted Surface

Some drill bits are designed not to "walk", but most are not.  The punch does not have to go all the way through the material, just make a depression to guide the point of the bit so it stays where you want it to.  Putting masking tape over the area wouldn't hurt, but I've never drilled holes that way.  I don't think electrical tape would work very well because it stretches and the drill bit may wind it up.  Maybe not, I've never tried it.


From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Bob Spidell
Sent: Tuesday, April 12, 2016 7:27 AM
To: Michael MacLean; Healeys Help
Subject: Re: [Healeys] Holes in Painted Surface

I suspect it would depend on type of material, type of paint, condition of both, etc. but have always assumed applying some kind of tape--electrical, masking, etc.--over and under--if the underneath is painted, too--the area to be drilled is about all you can do to prevent chipping.  Make sure you use a sharp bit, and a variable speed drill so you can start slow to drill through the paint.

Begs the question: do you use a punch to 'prime' the hole--with or without tape--before drilling?


On 4/12/2016 12:29 AM, Michael MacLean wrote:

What's the best way to drill holes in a painted surface?

Mike MacLean

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