On 10/29/2015 07:09 PM, rayj wrote: > Thanks for the reply. > > That's what I was thinking, but some MT3 adapters are just rammed in > place or tapped lightly with a hammer and function adequately. MT3 is a "self holding taper". So, if a clean, burr-free holder is driven into a clean, burr-free socket, it should resist normal machining forces with NO drawbar, vacuum or other tricks. I doubt vacuum could provide the kind of impulse that was normally used to drive tools into the spindle.
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