CNC do unplanned cuts

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey Frank,

yes this does help. You are using the buildbotics-derived Onefinity CNC Controller on the Original or the PRO Series. Firmware Version 1.0.9 is known to be a stable version.

The problem with EMI can affect all models of all series, since they all have non-shielded cables and the assembly manual says nothing about the urgent need to ground the chassis and all moving parts of your machine.

@Aiph5u

To not only prevent EMI but also to comply EN/IEC 60204-1 safety standard, the machine has to be electrically bonded and grounded. Here the links with the relevant information on how to do this:

• Proper Grounding; How have you grounded your frame?
• Material and Tools needed to ground your Onefinity CNC

The copper on your dust collection hose helps nothing if the hose is made of plastic.

@Aiph5u

@wang3922

Should I spiral a wire around the outside of my dust collection hose/separator and connect it to ground? What about the vacuum cleaner itself (it’s not pictured, but it’s in the same cabinet)?

If the hose is plastic, this is useless. See here:

• Grounding/Earthing a PVC Dust Extraction System! Time to End the Nonsense!!! - John McGrath

I’ve linked the moment in the video where the author gets to the summary, but of course it’s worth watching from the beginning.

If you get electric shocks from static electricity from your dust hose, you can however cover the areas you usually touch with copper tape or aluminim foil and ground it, so you don’t get the shocks anymore, but basically you can’t ground any non-conductive material itself. All the instructions about this you find in youtube are nonsense.

Here you can see that even though the PVC pipe is wrapped with grounded wire, it still attracts paper scraps when it is statically charged.