PortMatch
CONNECTION

Connect a Bosch GTS1031 table saw port to a Fein Turbo 35 mm hose

How to join a Bosch GTS1031 table saw port to a Fein Turbo 35 mm hose, and what stops it leaking dust.

Reducer required

Not a direct fit. Joining the Bosch GTS1031 table saw port to a Fein Turbo 35 mm hose needs a 2 in to 35 mm step reducer.

END A51 mmBosch GTS1031 table saw port (2 in OD, 51 mm OD)
END B35 mmFein Turbo 35 mm hose (1-3/8 in ID)

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

The two ends

End ABosch GTS1031 table saw port (2 in OD, 51 mm OD)
End BFein Turbo 35 mm hose (1-3/8 in ID)
Fit typemale port into hose cuff
Reducer needed2 in to 35 mm step reducer

Shop notes

Measured across the joint between the Bosch GTS1031 table saw port and the Fein Turbo 35 mm hose, the port (51 mm) is 16 mm larger than the hose (35 mm), so it will not seat. A 2 in to 35 mm step reducer closes that 16 mm step so the two hold together instead of leaking at the gap.

A 16 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.