On Monday, March 24, 2014 10:35:59 AM UTC-7, Cydrome Leader wrote:
jon_banquer wrote:

On Sunday, March 23, 2014 4:05:10 PM UTC-7, Cydrome Leader wrote:

wrote:



As a newby I don't know where to buy drill bit sets.



I want high precision, no bits that give me a .190 hole from a .186 drill bit; and not a 123 hole from a .125 bit either.







On EBAY I foudn 12 piece sets for $8.95 (from China probably), but when I search other sources the same type of sets are around $350.



Any suggestions?



alofsax







You never said what sizes or how many bits you want it a set, but Republic



Drill sells alleged to be made in USA drill index that come in a Huot box.



I have the number and fractional sets in screw machine length in black



HSS.







They're great, mostly because the're super short. I got mine from Little



Machine Shop in CA or Victor Machinery in NYC. Both places are respectable



and will not pull a "whoops it's chinese, we forgot to update the photo



and description" scam.



Should you ever have to drill tough alloys you will be far better off with cobalt. They hold up much better.



Any opinions of those hard material drill bits that lack a twist? What

about center drills vs. 90 degree spot drills?


You get much better positioning with a center drill vs. a 90 degree NC spot drill.

When you don't need the high degree of positioning you use a 90 degree NC spot drill because they last a longer.