is preferred the bond composition is prepared by mixing the ingredients for example by tumble blending until the components are dispersed to a uniform concentration the dry powder bond composition can be mixed with a low viscosity liquid binder the binder is added to the powdered ingredients in effective proportion to form a viscous tacky paste in paste form the bond composition can be accurately dispensed and should be adhesive to the cutting surface of the core and to the abrasive grains preferably the bond composition paste should have the consistency of tooth paste the binder should be sufficiently volatile to substantially completely evaporate and or pyrolyze during brazing without leaving a residue that might interfere with the function of the bond preferably the binder will vaporize below about 400 u00b0 c however the binder volatility should be low enough that the paste remains fluid and tacky at room temperature for a reasonable time u201c drying time u201d to apply the bond composition and abrasive to the core and to prepare the tools for brazing preferably the drying time should be about 1 2 hours liquid binders suitable to meet the parameters of the novel bond composition are commercially available representative paste forming binders suitable for use in the present invention include braz u2122 gel from vitta company and lucanex u2122 binder from lucas company the latter is a proprietary composition and may need to be specially obtained as a paste already mixed by the vendor with bond composition components.