Well you just drill part way through with a larger drill which has a stop on
it so it only goes part way through. Well that is what I did and filled up
the little head holes with some kind of resin the same colour as the wood.
It can be a swine to get at the bloody heads later on though. Grin.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

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Note this Signature is meaningless.!
"Suzanne Clarke" wrote in message
...
Hi

We are replacing some decking and have the boards delivered. The previous
deck was installed by the builder's chippie about 12 years ago. We have
started taking the old boards off. The screws, which were invisible before,
start half way into the plank and then screw into the base. How on earth is
that done?

Thanks
Suzanne