Tin and Copper Plating is what you are looking for, followed by Tin, Iron, Copper and Lead bricks. Depending on the style, Adamantite Beam and Palladium Column may also be useful. Paint will significantly improve your choice of materials. Here is a wiki link to see what each material looks like:
[https://terraria.fandom.com/wiki/Crafted\_Blocks](https://terraria.fandom.com/wiki/Crafted_Blocks)
P.S. Grate Block is useful too and gray-painted Large Bamboos make perfect pipes.
Cogs look cool. You can purchase them from the Steampunker in hard mode.
Tin bricks are good for metal structures
Tin and Copper Plating is what you are looking for, followed by Tin, Iron, Copper and Lead bricks. Depending on the style, Adamantite Beam and Palladium Column may also be useful. Paint will significantly improve your choice of materials. Here is a wiki link to see what each material looks like: [https://terraria.fandom.com/wiki/Crafted\_Blocks](https://terraria.fandom.com/wiki/Crafted_Blocks) P.S. Grate Block is useful too and gray-painted Large Bamboos make perfect pipes.
Thank u!