by gyrogearloose » Sun Dec 23, 2012 7:34 am
That's where it's most visible. It's also very subtly noticeable in other parts of the image. Don't get me wrong, it's a good print! I was just stating the obvious (to me), that the wobble has been greatly reduced but not eliminated.[/quote]
You are right, well spotted. I looked at it again under a magnifier glass and yes, there are still slight periodic aberrations. Not to worry though: Hmmmm, perfection attain we must, Luke. There is no other way and am sure I am on the right track. As you can see, made a change to the coupler to ensure concentricity even more. The coupling is tapped M8 on one end as before, but cut with the hacksaw lengthwise along the center line. This allows the coupling to be compressed around the 8mm rod with a SS hose clip. I have also replaced the SS rod with a brass one. Brass with stainless has a better friction coefficient than stainless on stainless. It is generally not recommended to use the same material for a lead screw and nut anyway. Brass is also easier to straighten if necessary. I will report once i have printed a test piece.
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