If you haven't got any of Frank's tool holders, you're spending too much money for what you're getting.his drill chucks are as good as any high dollar unit, and for a Cat40, they're almost free. Get a couple of Drill Chucks from Frank Mari (Maritool), bottom out your drill in the chuck, and you should be able to change out a drill in a couple of seconds and not reset your tool length. As I recall, you can change a value on your "settings" page and change the tap reversal speed very finitely want to do this. Maybe even consider a Tapmatic as you can tap faster with no spindle reversal and the tooling block I believe is readily available for Haas machines.although a VF3-SS machine should rigid tap really well, vs lets say a gear box model. I'd consider going to a tension/compression style as you should get better tap life (at least according to Tapmatic), as long as thread depth is not super critical. I'd go with a Bilz style tap holder for quick change out - you will not have to reset your tool length every time you change your tap - as long as you are using the same brand of tap. As I recall, 20 sfm is the recommended speed, but you may be able to bump it a bit and still get good tap life. You should be able to get away with a good coolant at a stronger concentration (maybe ~12%?), and not have any contamination issues, but see what your tap supplier has to say. We use Castrol Moly Dee instead of coolant, but with that many holes, and possible contamination issues, I'd talk to their tech service and see if they can recommend a coolant. Chazsani, We've had really good luck with #10-24 Balax Threadfloers (thread formers) in 316ss.
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