Metabo 5378 dust extraction unit
thingiverse
The unit fits into cutting table and collect the sawdust, the adapter fits to a 30mm external diameter tube that attaches to the dust extraction unit. It might be beneficial to glue it to the cutting table to secure it, in that the attachment to the extractor unit might upset it. The unit is designed without tolerance. It will print fine on an sla printer, but if printed on an fdm printer, dimensions might be offset by about half the extrusion diameter. This will require a bit of sanding to make it fit. for fdm printer, I think it can be printed with the faceplate facing the buildplate, without support.
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