Hi Nick,
Thanks for your advise and your fantastic web site. Adjusting the z gib is clearly the issue. I have tried just about every imaginable setting. Yesteday I spent 3 hours and the closest I got was to elliminated the pinching moving down, but it would still pinch when moving from the lowest point upwards.
I could never manage to totally get rid of the problem. BTW:
1 Is the top screw the "A" or the "B" screw?
2 When you write that they both have to be tight after adjustment, exatly how tight do you mean? It would seem to me that the actual adjustment is made in the tightness of both A and B as once they are tight and I have the pinch nearly elliminated only a 1/8 additional turn on the top screw tighter will casue more errors.
If a screw is loose so that you can rotate it with your fingers, then finger tighten it. After this point you can still tighten it a lot more with the hex key. How much additional tightening with the hex key would you recommend? As tightening the A also tightens the B, would you recommend alternating between A and B while tightening, (like you would while changing a car tire)?
It seems to be a very sensitive adjustment as I get big variation with these settings and NEVER manage a setting that totally and repeatably eradicates the problem!
Andy
Originally Posted by cartertool Remember that you are not so much loosening and tightening as you are positioning the tapered gib - it sounds as though it is loose in the tapered pocket and when it feeds down is sliding and becoming tight, and when feeding up is becoming loose again.
When done adjusting both screws should be tight, top and bottom...
See here:
http://www.cartertools.com/millset.html
and
http://www.cartertools.com/millset2.html |