cup as indicated at 236 it has been found that this does not adversely affect the honing performance of the tool and such slight arcuate configuration from the ends of the tool holder or beam actually make the tool slightly easier to insert into a bore in any event the tips of the fingers forming the saw tooth effect provide an excellent honing tool referring now to fig2 there is illustrated one method of making the tool of fig2 after extrusion the abrasive plastic strip is coiled and a coil of such strip indicated at 240 is positioned on uncoiler 241 the strip from the coil indicated at 242 passes through pinch rolls 244 top male slitting die 245 bottom female slitting die 246 pinch rolls 247 and cut off 248 the cut off 248 cuts the strip to the discrete length 220 which then is guided into a pile or bundle indicated at 249 positioned on conveyor 250 the conveyor transports the loose bundle into the ultrasonic welder and positions it between the tool 203 and the anvil 202 one or more ultrasonic welds may be made to form the bundle along the unslit root portions of the strip and the bundle thus formed is indicated at 230 positioned at the end of the conveyor 250 the bundle may then be inserted into the holder with the noted instant adhesive covering the bottom wall of the cup element the purpose of the ultrasonic welder is simply to form the bundle to make.