Rod wrote:

The centre spike was ridiculously oversized and threatened to pierce the
other side of the door €“ a bit better after I had taken my Dremel to it.

Silverline (on eBay) from around £8-75 inc. p&p

Any advice? Recommendations?

Tried the silverline - same problem with the spike, much too big. I only
needed two holes, so started them both and drilled to half depth,
removed the spike on the bench grinder, and completed the holes! (threw
the bit in the bin after that).

--
Cheers,

John.

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