is the seatpost aluminium?
If so i wouldn't use caustic soda, it takes too long.
Use brick and mortar cleaner (available from B&Q). Melted a aluminum BB shell completely out of my steel frame in a day. Frame will need painting after as it dissolves the paint. Caustic took 4 days and did hardly anything.
is the seatpost aluminium?
If so i wouldn't use caustic soda, it takes too long.
Use brick and mortar cleaner (available from B&Q). Melted a aluminum BB shell completely out of my steel frame in a day. Frame will need painting after as it dissolves the paint. Caustic took 4 days and did hardly anything.