On 13/05/2015 17:01, gareth wrote:
Which is what I said. Taking the relative times available for
commercial treatment (as qucikly as possible) and amateur
use (over time) then the approach of putting preservative
into a hole whence it can slowly seep makes sense.

+1

For the sceptics - if you put preservative in a hole in the middle of
the post, where do you think it goes if it doesn't soak into the wood?

Sure, it won't do a good job of protecting the outside of the post - but
that will be the bit the 1 minute pressure treatment did. And if the
outside rots away leaving a solid core - well, that's better than the
outside and the inside rotting...

Andy