[TowerTalk] To pin or not Rrilling 4130

[Merv Schweigert]

Thanks Hank for the info, thought it was just me going senile,
I use quality drill bits from a machine shop and they go through
very easy.  Speed is very important depending on drill size..
Maybe the ones having trouble use wallmart bits and run the 
drill at 5000 rpm ?  73 Merv k9FD


>
>For the life of me I do not understand what the big deal is of drilling
>4130. If you use a SHARP drill, correct SPEED, exert a fair amount  of
>PRESSURE and some lubricant it is like a hot knife going through butter.
>
>If you are doing it all correct you should get nice little spirals as
>the drill eats up the 4130, if you are getting chips then you are doing
>all of the above WRONG
>You can double drill it if like 3/8 or 1/2" with a 3/16 or 1/4"
>
>With the correct flute angles you can drill SS and plastics just as
>well.
>
>My .02 centavos
>
>Hank
>
>
>
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