SOLID CARBIDE ENDMILLS USER GUIDE Recommended Rampdown Angle A D ≤ 10 mm a= 5°-10° ≤ B D > 10 mm a= 3°-7° D α Helical Milling Recommended for Faster and Better Chip Evacuation d D Dmin= d + 1 mm Dmax= (dx2) -1 mm 87