If your spindle bearings have any vertical play in them, you’ll never be able to get a great finish with an inserted chipper. One of our Bridgeports at work has .004” play on the bearings and it leaves a horrible finish with inserted chippers. As you start onto the part, the spindle pushes up from the tool pressure and as you come off of the part, the spindle drops down and bounces causing chattering.
With tooling, you definitely get what you pay for. The cheap endmills and drills are not made from good steel.
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Adam
1964 Model 100 w/ K301 12hp and custom hydraulics
1972 Model 149 turned 129 w/ K301 12hp, triple hydraulics, 66 series clone
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