The radial arm saw has several adjustments that need to be aligned properly for accurate cuts. These do have indexed settings. The owner/operator must set these properly. They include setting the tilt of the motor so the blade is 90 degrees to the table. The arm can swing and must be set so it is 90 degrees to the table's fence. The most cumbersome adjustment in my experience is getting the arm 90 degrees to the fence. But, with a slight revision of the process
outlined in the owner's manual and an addition to the table, it is not difficult at all. In use vibration can change the settings of any saw a little. The the saw needs to be checked occasionally to make certain the arm is still square to the fence.