A few rules on Sliting saws.
1) be sure to have at least 2 teeth in the material at the same time.
2) lots of Coolant
3) Feeds and speeds are very light like .0005 per tooth
ex. 3 inch diameter 27 teeth would be around 100 to 150 rpm and 1.35 Inches Per Minute. Carbide is about 10% higher in feeds and speeds.