mounting board 31 via bolts 22 the front bearing blocks serve as aligmnent members for the shafts 17 which actuate the blade 44 in a preferred embodiment both front and rear bearing blocks 20 should be present for each shaft 17 a plurality of fasteners such as bolts 22 affix the bearing block 20 to the mounting board 31 see fig2 the bolts 22 do not extend through the shafts 17 otherwise the shafts 17 would be rendered immobile bearing blocks 20 carry a bearing 23 which slidably supports driving shaft 17 allowing reciprocating movement preferably bearings 23 are backed by a resistant material such as neoprene to absorb vibration and to ease alignment of shafts 17 between the front and rear blocks 20 in a preferred embodiment bearings 23 impregnated with oil may be used to eliminate the use of grease fittings thus when parts of the tool 100 heats up due to the friction of the shaft 17 sliding in and out of the bearing blocks the bearings 23 release oil to lubricate the inside of the bearing blocks 20 and reduce wear and tear on the tool 100 the bronze bearing 23 may be further encased in neoprene rubber to control vibration caused by the operation of the tool 100 and thus reduce wear and tear of the tool 100 the flexibility provided by the neoprene rubber casing permits the bronze bearing 23 to easily align the shafts 17 in their respective bearing blocks 20 from the front to the rear of the tool referring to fig5 and 7 the blade 44 and the shafts 17 are connected to one.