Joe, I'm seeing your pictures on a large screen and now see what you are
pointing out about the sideways wear. I'm wondering if a longer split
nut would help spread out the load. Go from a 4 thread engagement to a
6 or 8. Is that that the split nut from your monster machine?
The wear patterns I see is the thread gets deeper and the split nut does
not fully seat. That's why sanding away the bottom surface works. You
need to catch it early before the nut is nearly ruined like yours.
Stan brings up an interesting idea about using a 3d printer. Is nylon
6/6 available for those machines? Possibly a material change to a
harder plastic might help such as nylon 6 or PTFE. These are thoughts
off the top of my head. Tensile strength may vary :-).
On 8/3/2017 7:00 AM, 'joe biunno' via Legacy Ornamental Mills wrote:
i'll offer an opinion here, as this could have been a problem for me
on my recently acquired 1500...the problem is, due to the
action/movement of the lead screw, the threads in the split nut wear
sideways, especially when using a drive motor...
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