CNC Touch Probe

prusaprinters

<p>A simple 3D printed CNC touch probe. This is part of my g0704 CNC mill conversion: <a href="https://www.nathantsoi.com/blog/from-3d-printing-to-machining-metal-parts/index.html#probing">https://www.nathantsoi.com/blog/from-3d-printing-to-machining-metal-parts/index.html#probing</a></p> <p>It functions as a normally closed switch. When the probe contacts material in any direction, it breaks this connection and the switch opens.</p> <h3>Printing:</h3> <p>I printed this in PETG (https://amzn.to/38AbG5Y), but ABS or PLA should be fine as well.</p> <h3>Required Hardware:</h3> <ul> <li>6x 8mm steel balls: https://amzn.to/3lxxwva</li> </ul> <ul> <li>5mm diameter x 50mm steel rod</li> </ul> <ul> <li>8mm diameter x ~6mm rod for the probe end</li> </ul> <ul> <li>8mm diameter x ~50mm (I used steel) rod for the probe shaft (to mount inside the collet). I turned down a 1/2" steel rod, so I could use a 1/2" collet</li> </ul> <ul> <li>10mm diameter spring</li> </ul> Category: Machine Tools