CNC 3018 X and Y axis knob (knurled surface)

prusaprinters

<p>This is hand wheels knob for CNC 3018 X and Z axis (diameter 8 mm). Printed grey looks very nice on machine.</p> <p>Knob radius is 24 mm and thickness is 10 mm. It is meant to be used on 8 mm lead screw so it has 8.1 mm hole which is big enough that knob tightly sits on leading screw so it can easily turn leading screw.</p> <p>There are holes for 3 mm headless screws if there is need to additionally secure knob on the lead screw. I find it not needed but I added them just in case. Holes are 2.5 mm in diameter and you have to cut threads for 3 mm screw. Screws have to be headless and 5 mm long or less. Screws should not be over-tightened to avoid destroying plastic threads. Use two screws on each knob for balance.</p> <p>I remixed this from <a href="https://www.thingiverse.com/thing:9095">https://www.thingiverse.com/thing:9095</a>.</p> <p><a href="https://pedja.supurovic.net/knob-with-knurled-surface-for-cnc-3018-x-and-y-axis-3d-print/">https://pedja.supurovic.net/knob-with-knurled-surface-for-cnc-3018-x-and-y-axis-3d-print/</a></p> <h3>Print instructions</h3><p>Using at least three vertical walls is recommended. Print hole up.</p> <p>After print is done you may use fine sanding paper to soften the edges of kurling pattern if you find them too pointy and sharp.</p> <p>Print time is about 45 minutes for two knobs in same job at 0.2 mm layer height.</p>