Petrol tank

This is a mandrel to face off the 100 mm copper tube ,it is a 20 mm steel bar centred both ends supported by the lathe centres.
A disc has been loctited onto the bar
(next to the tail stock).The disc has been turned to the inner diameter of the tube.
A steel ring has been bored to fit over the outside of the tube.





The tube is fitted over the mandrel, supported
by the disc at the tailstock and driven by the
inside of the tube being supported by the ring.







This is the tool path for the webs of the tank
supportsThese webs set the position of the
tank and were used as the basis to braze the
additional parts that make up the mounts.








The two mounts fabricated and in position