Just started machining so forgive me. We are making parts out of 304 ss. The first diameter were drilling is .212 from a .250 stock going .520 deep with a coolant thru carbide drill. Then from .450 to 1.2 were drilling a .177 hole. We were peck
drilling the first hole and we were having issues with the second drill snapping. We thought we were having issues with the guide bushing but everything seemed to be ok. Researched an found most people saying there is no need to peck drill with a carbide drill so we took it out. Now it seems like were having issues with chips and the drills chipping and burning up at the tip. Any advice on speeds and feeds or in general appreciated. Sorry for the newbie question.