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- Dec 26, 2015
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The least rigid aspect of your lathe from a toolholder perspective is the compound. If you want better rigidity using a QCTP, switch to a solid toolpost like discussed in this thread.
As far as your idea goes, machining the pocket for a carbide insert is not a trivial undertaking. They require 10ths level precision, often have difficult profiles to achieve on a manual mill, and complex angles. I'd must rather machine slots and drill/tap for holding screws than to tackle the complexity of making a pocket at -7° angle for a DCMT insert.
As far as your idea goes, machining the pocket for a carbide insert is not a trivial undertaking. They require 10ths level precision, often have difficult profiles to achieve on a manual mill, and complex angles. I'd must rather machine slots and drill/tap for holding screws than to tackle the complexity of making a pocket at -7° angle for a DCMT insert.