Re: Drilling Blanking Plates?

[Martin Howell <martin.howell@xxxxxxxxxxxx>]

I've used a masonry drill on these hard plastic plates with good
results.  Suggest you don't use a pilot hole as the drill will chatter,
causing at best a lopsided hole and at worst shattering the plate.  Also
you need to hold the plate down very firmly and feed the drill very
gently as it starts to break through or it grabs the plate and eats it
or hurls it across the room.  Best to use a small drill press if you
have one.

Martin

Martin Howell
Woodworker, artist and engineer

On 14/07/2013 19:53, Rob Iles wrote:
> I can add a "don't try this method" FWIW!
>
> Needed 15mm holes in standard blanking plate. Drill chuck max 10mm,so
> piloted, 5mm,8mm,10mm (all good so far). Then used a conical metal
oxide
> grinding bit to extend it......... Worked ok at first, but on the 2nd
hole
> the plastic melted, rendering the grinding bit useless, the motor on
the
> (cheap) dremel style device burned out, and 3rd attempt (new bit, new
> tool), the bit "caught" and fractured the plate. :-(
>
> A stepped drill bit did the job in the end!
>
> I have some very nice momentary contact push buttons for sale if
anyone is
> interested @£5 each +P&P :-)
>
> R.
>
> --
> Rob Iles
> Harmony Automation (www.domialifestyle.com)
> myBBS (www.mybbs.co.uk)
> On 13 Jul 2013 12:43, "Mark McCall" <lists@xxxxxxx>
wrote:
>
>> **
>>
>>
>> Some pics here that might be useful...
>>
>> http://www.automatedhome.co.uk/diary/ir-hardwired-distribution.html
>>
>> M.
>>
>>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
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