manipulator 80 changes the air flow around the blades 54 and decreases turbulence so that a high percentage of the atomized fluid reaches the blades and provides improved cooling it has been found that without the air manipulator 80 difficulties may arise due to the air flow proximate the blades 54 that decreases the amount of atomized fluid making sufficient contact with the blades and therefore may not provide sufficient cooling the air manipulator 80 improves the cooling performance of the sprayer assembly 60 while using much lower quantities of cooling fluid referring to fig2 and 4 the grinding assembly 22 also includes a blade cleaner 70 a cleaner assembly 72 includes a block 74 and a spring 78 the cleaner assembly 72 contacts the tips of the blades 54 and removes the cleaning fluid laden with grinding dust and debris from the blades to improve the cutting performance the cleaner assembly 72 has a block 74 that is sufficiently soft so that it will be cut by the blades 54 to form notches for receiving each blade through the block 74 having portions 76 extending between the blades to provide close contact with the blade surfaces the block 74 is configured to wipe the material from the blades 54 during each revolution the spring 78 biases the block 74 towards the blades 54 so that constant contact is maintained the hardness of the block 74 and the force of the spring 78 are chosen so that sufficient force is maintained to keep the cleaner 72 in contact with blades 54 but is sufficiently small so that the performance of the grinding assembly 22 is not affected the cleaning also improves cooling of the atomized mist through increases surface contact and provides for easily collecting the resultant slurry it.