Hi, looking for a little advise on this.
I'm just doing some work out of my garage and only have a drill press that only has a lowest speed of 500RPM.
Ive done a lot of shallower countersinking which has came out ok, but this time around Im given a job where I need to use a 45deg CS on a .175 DIA thru hole in some alloy steel plate .105 thick.
I'm supposed to go deep enough to get a 3/8 dia across, but my problem is, the last .050 of removal is creating a lot of chatter and running out. Ive tried clamping the work down and just pressing against a solid stop.
But im wondering if the problem is that the RPM is to high? or is it that the cut is too deep using a 45 deg tool? Or should I use a 45 degree endmill instead? The countersink I'm using is three flute HS steel.
Thank you if any advise!
I'm just doing some work out of my garage and only have a drill press that only has a lowest speed of 500RPM.
Ive done a lot of shallower countersinking which has came out ok, but this time around Im given a job where I need to use a 45deg CS on a .175 DIA thru hole in some alloy steel plate .105 thick.
I'm supposed to go deep enough to get a 3/8 dia across, but my problem is, the last .050 of removal is creating a lot of chatter and running out. Ive tried clamping the work down and just pressing against a solid stop.
But im wondering if the problem is that the RPM is to high? or is it that the cut is too deep using a 45 deg tool? Or should I use a 45 degree endmill instead? The countersink I'm using is three flute HS steel.
Thank you if any advise!