The clefts we get from the supplier come in a standard cut size. these will all weigh differently. Some companies get super sized clefts, we don't they are a gimmick and also are taking up more willow trees to do so. once cleaned up to our working dimensions they will be weighed again at that stage I will start to know what weight they will be suited for in whatever grade. so when we come to actually making them up they will all have the same bulk of wood but some will weigh heavier some lighter in those same dimensions.
Shape and balance, this is a skill in shaping because some willow will weigh heavier at one end than the other, and some will be even all the way through just because the moisture content can vary in the position of different clefts.
Ok take the traditional style bats like our velocity range. to many peoples eyes they look at it and think the weight is all down the bottom because the blending of the toe starts low down in the bat. if you actually look at the bat the depth of the spine runs out up the bat gradually therefore distributing the weight up the bat creating a balanced pick up. the edges aren't as thick for the simple reason the bat has to have weight removed somewhere so without concaving it has to come away from the edges. if these were bottom heavy some of the greatest players of all time wouldn't have been scoring double hundreds with them on far quicker wickets than they play on now in county and international cricket. The middles on the bats were just as big as any bat now. look at a modern shape they vary from massive concaving with huge looking edges to give the illusion of a big bat and it is an illusion because the weight has been removed and the guts of the bat lost through too much concaving. then there are gentle concaved bats with big edges but not ridiculous and spines are not as deep and toes not as thick as the bulk is being kept in the hitting zone. now people think the players are hitting bigger sixes with modern bats. not necessarily so, more yes but boundaries are smaller due to, 1. stadiums being made bigger and therefore encroaching into the old playing arena and 2 they bring the boundary ropes in even further to make it appear more exciting. A good bat made in years gone by wont be any different to a good bat made now except for the profiling style, this at the end of the day is a marketing tool, but also a batter who has a bat that looks big in his hands will feel more confident but that confidence is irrelevant if the bat is not pressed and shaped well as the ball wont go anywhere with a dead bat simple as that