Spade might (slight chance) work, but I don't think an auger will. Both=20
of these have fly cutters that score the perimeter, and then with a hand=20
plane (wood) or chisel action, shear the fibers. The plastic doesn't=20
doesn't have the fiber structure. Neither of these will cut decently on=20
end grain wood. Try a wood chisel, to shave off thin slices of the=20
plastic, difficult.

On 2/10/2011 11:07 PM, jim wrote:
> How about buy a large diameter auger bit or spade bit?
>
> Jim
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf =
Of
> Bob Blick
> Sent: Thursday, February 10, 2011 9:38 PM
> To: Microcontroller discussion list - Public.
> Subject: Re: [EE] Cutting holes in thick uPVC pipe caps
>
> On Fri, 11 Feb 2011 02:06 +0000, "Philip Pemberton"  wrote:
>   =20
>> (EE because "making stuff" is part of engineering :P )
>>     =20
> Yes! Someone who gets it!
>
>   =20
>> Short of "buy a new holesaw" (apparently *not* stocked by the local
>> B&Q), does anyone have any ideas how I might be able to cut these holes?
>>     =20
> Immerse it in a pail of water to keep it cool and then use your dremel
> or drill multiple holes in it.
>
> Cheerful regards,
>
> Bob
>
> P.S. don't electrocute yourself in the process!
>
>   =20
--=20
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