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Connect a Bosch GTS 10 table saw port to a Festool D32/22 antistatic hose

How to join a Bosch GTS 10 table saw port to a Festool D32/22 antistatic hose, and what stops it leaking dust.

Not compatible

Not compatible without stepping down. A Festool D32/22 antistatic hose is far larger than the Bosch GTS 10 table saw port, so it needs a 63 mm to 22 mm step reducer.

END A63 mmBosch GTS 10 table saw port (2-1/2 in OD, 63 mm OD)
END B22.2 mmFestool D32/22 antistatic hose (7/8 in ID)

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

The two ends

End ABosch GTS 10 table saw port (2-1/2 in OD, 63 mm OD)
End BFestool D32/22 antistatic hose (7/8 in ID)
Fit typemale port into hose cuff
Reducer needed63 mm to 22 mm step reducer

Shop notes

The hose is about 22 mm and the port about 63 mm, a gap of 41 mm, so the port simply swallows the hose with no contact. A 63 mm to 22 mm step reducer is needed, and even reduced the airflow is mismatched between the Bosch GTS 10 table saw port and the Festool D32/22 antistatic hose.

Wrapping tape to close a 41 mm gap never seals cleanly and chokes the airflow further. Step the sizes properly, or pair each end with a fitting closer to its own size.