.0025 taper is now .0000

ltlvt

H-M Supporter - Sustaining Member
H-M Platinum Supporter
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Aug 29, 2019
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Well as good as I can measure anyway. I used the same material and the same tool and the same tenths micrometer as before when I had the .0025 taper with the old worn out lead screw and nut. Now that i have zero backlash in the new screw and nut I measure .0000 taper in the same distance. This does not mean there will be .0000 taper in the entire length of the machine but in the zone that I will be doing most of my work up close to the headstock it is as good as I can get it. When you listen to what I am saying it is all goofed up. When the camera was on the indicator I said it had moved .004 but since it is a .0005 tenths indicator the travel is actually .002. Also me trying to explain the marks on the dial I got confused as well. No need to divide the amount you want to take off the rotating shaft by 2 as you do with many this is what I call "Direct read" .001 on the dial actually is a depth of cut of .0005 therefore actually reducing the diameter of the shaft by .001. My head is just not made for talking and filming at the same time. My next fix is to dial in the tail stock to dead nuts with center line of the spindle.

 
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