• Yes, the gauge (or caliber) refers to the thickness of the copper metal. A higher gauge number indicates a thinner sheet, while a lower gauge number corresponds to a thicker piece of copper. A thicker gauge provides more durability, resistance to dents and scratches, and a more solid feel compared to a thinner gauge. Therefore, it’s important to consider the gauge when selecting your copper sink.

For kitchen sinks, 16-gauge copper is the standard. While 14-gauge copper may be used if needed, we’ve found that 16-gauge is solid enough for long-term durability. With nearly 20 years in the business, we’ve never received complaints about our kitchen sinks being too thin or fragile. For bathroom or bar sinks, the gauge may range from 16 to 18, depending on the design and size of the sink.

To calculate the opening size, consider the interior dimensions of the sink (the dimensions inside the lip or rim). This is the total outside dimension minus the width of the lip/rim or apron. For example, our standard kitchen sinks are 33×22 inches (outside dimensions), with a 2-inch lip/rim around all four sides. This gives an interior dimension of 29×18 inches, so the opening in the countertop should be around 30×19 inches.

To maintain and protect your copper sink, use only water and mild dish soap for daily cleaning. Avoid harsh chemicals and don’t allow food or wine to stagnate in the sink. If a stain appears on a shiny finish, rub a lemon on the affected area – this is a simple and effective household trick-. If the patina is removed on a dark finish, you can use a household blowtorch to heat the area, or apply black shoe polish to restore the look.

The standard drain opening diameter for a kitchen sink is 3.5 inches, while for a bathroom sink, it’s typically 1.5 inches. For some bar sinks or bathtubs, the standard may be 2 inches.

When you purchase a handmade copper sink, it’s important to understand that it’s not an industrial product. Your sink is crafted by skilled artisans, one by one, and its finish—whether with or without patina—adds a unique character. One of copper’s remarkable qualities (besides its antibacterial properties) is its ability to “self-heal”. Over time, and with regular use, the sink will naturally revert to its original finish and color. While the appearance may change, rest assured that your copper sink will remain durable and functional for many years to come.

Hammered copper is our specialty, as it is for most artisans in the village of Santa Clara del Cobre, Michoacán, where we manufacture our products. However, we can also create plain/smooth copper sinks without any hammering. It’s important to note that hammering helps to conceal any imperfections in the metal, which can be more challenging to hide, on an unhammered smooth surface. Our products are made with recycled copper.