Eight Sided Clawfoot Copper Bathtub Nickel Inside Outside Shining Copper is a hancrafted copper tub uniquely available at Coppersmith Creations. The bathtub features octagonal design with hammered interior and exterior. The tub has nickel interior finish which makes a good contrast with shining copper exterior. With the build quality of 16-gauge copper, this copper bathtub is a luxury worth investment.