18 mm to 20mm trapezoidal nut adapter
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Anycubic Kobra Neo Z-nut has non-standard 20mm mount. Printed adapter fix.
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Allow me to share a critical design issue I encountered while using the Anycubic Kobra Neo printer.
The problem concerns the trapezoidal nut on the Z-axis, which the manufacturer made from polyoxymethylene (POM). Unfortunately, this component is subject to natural wear over time, which in my case has led to unacceptable backlash and significant creaking during Z-axis movement.
What causes the deepest bewilderment and professional dismay is the decision by Anycubic's engineers to use a non-standard, essentially "custom" 20 mm distance between the mounting screws. This is particularly egregious since the standard spacing for such nuts across the industry is 17-18 mm.
Such an engineering approach, which sacrifices device repairability, is, to put it mildly, short-sighted and demonstrates a frankly dismissive attitude toward the end consumer. Rather than resorting to crude modifications of the printer's casing, I was forced to design and print a special adapter to restore the device's functionality.
Thus, the manufacturing company has not only failed its customers but has also created artificial barriers to simple and logical repair.
After printing, cut M3 threads on the holes that are attached to the printer. Just screw in the M3 boltAfter printing, cut M3 threads on the holes that are attached to the printer. Just screw in the M3 bolt