> but this guy split seven > neat cuts right next to each other to give the stone a faceted > appearance. I had a wooden narrowboat for 16 years and the chap who did some work on it was a really pleasnat guy and loved to talk and demonstrate the skills of the old boatbuilders. The boat was caulked with oakum - the caulking irons and mallet are beautiful objects in themselves - the mallet is such a specialised shape, one wonders why. He used to talk to me whilst caulking the seams and his party trick was to feed the oakum into the seam, tapping it gently into place them doubling back and feeding in another row until the seam was "full", then hitting the caulking iron harder to consolidate the oakum in the seam thus rendering the boat watertight. He could do an entire run without ever looking at the point at which the mallet was striking, so skilled was he at weighing the mass, inertia and trajectory unconsciously within his mind. Flint making must be a similar skill. I was really chuffed recently when on approach into Southend, I remarked to my passenger, another PPL, that although the approach looked good, we had 4 reds on the PAPIs. He agreed, so I reduced the descent rate for a moment to get 2 reds & 2 whites. I was convinced that we were too high then. After landing he checked in Pooleys to find that the Southend PAPIs are set at 3.5 degrees. So my brain instinctively could identify a difference of half a degree in an approach slope. I must have learned /something/ about flying! <g> These examples illustrate the sort of intuition that no time and motion system can ever capture, and why I hate so many of the modern world's practices. They have to do a risk assessment now for the British Legion to march to church on the 11th November. They should just close the road. The selfish B's who demand to drive past these old soldiers during their memories should be sent to rot in the trenches! Peter I have now become a Grumpy Old Man - official.