Quote Originally Posted by Steve Seebold View Post
What material are you drilling? What are your feeds and speeds? What is your peck depth? Did you change the brand of drill you are using?
The material is S235JR (calibrated steel sheet), Feeds and speeds (for the drilling operation): 760 RPM, surface speed 14.3 m/min, plunge feed rate 20 mm/min, pecking depth 1.5mm.
I've also tried without pecking since the depth of the hole is 6mm. It was no difference though.
Haven't change the brand of the drill bit.