Small hole drilling in 304

[Larry1958]

I have to drill a 1/16" dia. hole 5/8" deep in 304 stainless and would like some suggested feeds, speeds, and processes. I am going to start by using 30spm using a TIN 135 degree split point drill, peck at about .04, and feed at .002ipr. Would this be a good starting point. Any suggestions would be greatly appreciated. Thanks in adavnce.

[Goldorak]

i will start at .025 peck and .0002 to .0005 ipr

 

and use tapping fluid to avoid chip from sticking to the drill

 

 

and good luck

[GoetzInd]

.002 is pretty aggresive for 1/16 in 304. Try like .0005 30sfm should do ok.

 

Mike

[Larry1958]

Thanks alot guys. I will let you know how it works.

[Justin Beebe at Folsom Tool]

I have been having good success drilling 304 with 140 degree Ghuring carbide drills series 5514 with FIREX coating. I do not know if they make them that small. You may want to talk to a tool rep and see what they suggest. It is usually best to get your speed and feed data from the tool manufacture. Let us know how it works out.

[Goldorak]

we got some 1/32 and .040 carbide drill here from Ghuring they work very well