What hose size? To connect sweepy to Duststopper Pro?

[WillAdams (William Adams (Carbide 3D))]

Since that hose has a steel wire, it may work to just connect that to ground in some suitable fashion.

See:

Grounding your Shapeoko

Why would you want to ground your Shapeoko? This isn’t something everybody should do, but if you have either of the following issues, you should consider it; Dust & chip accumulation (on rails and V wheels causing movement problems) Random disconnects (when cutting plastics or when extraction is on) There’s nothing ‘wrong’ with the way the Shapeoko is delivered and there’s no safety issue WRT grounding on the machines (if you add a VFD spindle that must be properly grounded but that’s not for…

As noted, I just run my hose through a bungie cord looped from the ceiling — lots of different approahces.