PortMatch
CONNECTION

Connect a DeWalt miter saw dust elbow (1-1/2 in outer) to a Festool D50 antistatic hose

How to join a DeWalt miter saw dust elbow (1-1/2 in outer) to a Festool D50 antistatic hose, and what stops it leaking dust.

Reducer required

Not a direct fit. Joining the DeWalt miter saw dust elbow (1-1/2 in outer) to a Festool D50 antistatic hose needs a 1-1/2 in to 50 mm step reducer.

END B49.2 mmFestool D50 antistatic hose (1-15/16 in ID)
END A38 mmDeWalt miter saw dust elbow (1-1/2 in outer) (1-1/2 in OD, 38 mm OD)

Rings drawn to scale from the measured diameters in the table below.

The two ends

End ADeWalt miter saw dust elbow (1-1/2 in outer) (1-1/2 in OD, 38 mm OD)
End BFestool D50 antistatic hose (1-15/16 in ID)
Fit typemale port into hose cuff
Reducer needed1-1/2 in to 50 mm step reducer

Shop notes

Measured across the joint between the DeWalt miter saw dust elbow (1-1/2 in outer) and the Festool D50 antistatic hose, the hose (50 mm) is 12 mm larger than the port (38 mm), so the port rattles inside without gripping. A 1-1/2 in to 50 mm step reducer closes that 12 mm step so the two hold together instead of leaking at the gap.

A 12 mm mismatch feels close enough to force, and it will hold for a minute before it works loose under airflow. Fit the step ring rather than trusting friction on a gap this size.