system of this invention it is possible to change the working relationship between the handle structure and the blade it is also possible to use differently sized and configured handle structures and blades beginning with an illustration of the former u2014 i e a relative working relationship change u2014 if it is desired to readjust the relative translational positions of the handle structure and the blade within shared plane 44 for example to produce a condition such as that shown in fig1 where the blade is laterally offset to the right of axis 20 a in this figure clamping is accomplished in a manner whereby one opposite pair of rectangular configurations 62 64 in the blade spine become received within wells 44 provided in the patterning configurations in the clamping pads in fig1 configurations 62 in spine 46 b are so received such a lateral readjustment of blade 46 relative to handle structure 22 is indicated very generally and schematically by a double headed linear arrow 70 in fig1 wherein in dashed lines the laterally centrally shown solid outline blade is shown laterally offset in the same manner illustrated for the blade in fig1 the amounts and directions of such lateral shifting to predetermined lockable conditions between the handle structure and the blade are matters of designer choice to be implemented by appropriate reconfigurations of the patterning layouts provided in these two main components of the invention with respect.