>>2923532
>>2923636
>theres is fuck all grounding options

In addition to all the other ideas mentioned, another possibility besides connecting some metal part to a grounded part is to have a conductive path leading away from wherever you are getting discharge from and having it terminate in the air in a very fine point. Electrical charge hates accumulating on sharp points and tends to leak out of them much much more effectively than smooth or rounded surfaces. High voltage transmission lines need special components for basically everything where they pay special attention to smoothing everything from the insulators to brackets and bolts to prevent arcing and coronal discharge.

Basically the idea is you could possibly ground your nozzle assembly using the air as a really poor conductor, but since there's a lot of air there are lots of parallel paths for it to take. The choke point is moving the charge *into* the air, so thats where you need a sharp point to help out. If its making a little static arc you are dealing with pretty high voltages but probably really low current, and the higher the voltage is, the more it wants to leave through a pointy piece of metal.

Full disclosure, I'm not an electronics expert but I have a physics degree, took some electronics classes, and watch a lot of electroboom videos so I think there's a halfway decent chance this might help if nothing else has.

Also, could you post a picture of the thing and where the arc is coming from?

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