What kind of drilling bit is good for stainless steel?
The characteristics of stainless steel is high toughness, easy to stick a knife. So the drill hardness is high, surface finish better than ordinary bits, the bit angle large (130--135 degrees). At the same time to the full amount of feed and cooling. More than 0.15mm as much as possible without cutting in cold hardened layer. The cutting speed is as low as possible to reduce the cutting temperature. The cutting fluid is made of concentrated emulsions. Commonly used stainless steel drills are: high cobalt bit (M35 bit, M42 bit), in which the M42 bit is the most cost-effective, and carbide drills are also available.
With high cobalt drill can, if drilling is much, your point is not a problem, the key is durable, waste less. To choose according to the size of your drill bit.
This depends on the size of your drill, a lot of false open a hole is useless, there are special stainless steel drilling bit, do not buy fake Oh!
