a device which enables the circular power saw 14 to be attached to the guide bar 20 and for this purpose the saw is fitted with a slide connector 85 as shown in fig5 and 6 this connector may be secured by screws 86 or other suitable fastening means to longitudinally spaced brackets 87 which project upwardly from the base plate 76 on the right side i e fig1 and 6 of the saw the connector 85 has integrally formed flanges 88 and 89 these laterally projecting flanges defining with the remainder of the connector an inverted u shaped channel 90 the cross sectional shape of this channel is such that a guide rail 21 can be lodged therein to form a fairly snug fit which allows the saw to be moved freely lengthwise of the guide bar without twisting about a vertical axis it should be noticed that the flange 89 has an innermost face 91 which slopes to conform to the slope of the side edges 30 of the rails such an arrangement allows the slide connector 85 to be placed on and removed from a guide rail without difficulty when the saw is moved along the panel during a cutting operation there is no free play which will allow the saw blade to move away from the intended line of cut the connector 85 can be left permanently attached to the base plate since it does not interfere with any normal operation of the saw in order to understand how the plywood panel 12 is cut lengthwise reference should be made to fig1 and 3 wherein the apparatus 10 is shown in position of use the plywood panel 12 is assumed to require cutting along a.