This type requires a heavy-duty circuit because it’s driven by a powerful 3 to 5HP motor. The blade is driven by three parallel V-belts which ensure a smooth operation and an efficient transfer of energy. Needless to say, if you have big plans, you might want to consider investing in a high-quality cabinet saw. Prompted, it’s going to cost you a significant amount of money, but it pays out relatively quickly.
The DEWALT DW745 and the Bosch 4100 are pretty evenly matched in having plenty of power and not-so-hot dust collection. I you’re looking for a light weight saw, the DEWALT comes in ahead since it weighs almost half as much as the Bosch. It is also the less expensive choice by far. The large work table, expanded cutting capability, and its Gravity Rise feature (with solid rubber wheels that make it easy to be rolling across rugged terrain at a jobsite) make the Bosch a Cadillac among Pintos, but, of course, that luxury comes with a price tag.
We used the Freud calibration plate on each of the test saws to measure runout. We removed the new Diablo blade, installed the calibration plate, and raised the trunnion to its maximum vertical adjustment. Before measuring the runout, we placed a black mark on the calibration plate to give a consistent starting position for the runout test. The same iGauging dial indicator provided the test measurements, only this time, the units were set to read out in mm. TBB noticed that in the initial saws, the movements were sufficiently small to need the smaller metric units.
A magnetic switch is also good from a safety standpoint but may not be necessary on these smaller versions. A magnetic switch prevents the saw from starting back up if it loses power during a power outage. Basically, the power outage will turn off the saw. This is good because if for some reason the power were to come back on when you were not near the machine, the material could be shot out of it or damage the saw.
We evaluated the flatness of the table by measuring the flatness by placing the edge of a precision ground flat bar across the table and placed feeler gauges in any gaps to measure any difference between the ground bar and the table. TBB took measurements in four directions. As the operator faces the saw, we measured the flatness at the arbor from front-to-rear; we measured the left-to right flatness at the arbor; we measured the flatness from the upper left-to-lower right table corners; and, finally, we measured the upper right-to-lower left flatness between the corners.