DIY Wrought Iron Under-Sink Cabinet | Step-by-Step Guide 2026

This DIY wrought iron under-sink cabinet is custom-built to fit the sink space perfectly. The scrolls are shaped without bending jigs, and the straps and feet are handmade. The sink was meant to sit on a masonry base, but the mason kept delaying the work, so our reader Giuseppe Miloscio decided to take matters into his own hands and build a DIY wrought iron under-sink cabinet.

An iron craftsman by passion, not profit, he set to work creating a frame that the sink would fit into perfectly, strong enough to hold its weight, and in a style similar to a dining table he had built earlier.

What You Need to Build a DIY Wrought Iron Under-Sink Cabinet

The legs and lower crossbars of the under-sink cabinet are made from solid 30×30 mm iron, essential for ensuring the structure’s sturdiness. The frame supporting the sink is finished with 40×8 mm flat iron shaped around the top frame to contain the sink resting on it. For similar bathroom vanity projects, you might find inspiration in our collections.

The front scrolls are made from Ø 14 mm round bar, bent hot without bending jigs—by eye—an operation only a skilled craftsman can perform with the necessary regularity, resulting in only the imperceptible differences typical of handmade work. The straps are also made from 12×3 mm flat bar, bent hot and fixed to the scrolls with a small arc weld point.

Arc Welding and Torch Shaping

• Hot twisting that enriches the iron legs is highlighted by the typical blue coloration iron takes after being heated and cooled. Using a forge is ideal, but since the twisting area is very limited, a gas torch can also be used. For lighting ideas to complement your workshop, check out our selection.
• Preparing all the pieces that make up the frame is crucial. You’ll need to cut, bend, and weld each component with precision. Explore garden supplies for outdoor projects that pair well with wrought iron styles.

Step-by-Step Construction

Start by measuring your sink space and cutting the 30×30 mm iron for the legs and crossbars. Weld the lower frame first, then shape the top frame with 40×8 mm flat iron. For the scrolls, heat the Ø 14 mm round bar with a torch and bend it by eye—practice on scrap first. Attach the scrolls to the frame with arc welding. Finally, add the straps and feet, twisting the legs hot for decorative effect. If you’re also working on a dining table project, our collection offers matching styles.

Tools and Materials Checklist

• Solid iron bars (30×30 mm for legs, 40×8 mm flat for frame, Ø 14 mm round for scrolls, 12×3 mm flat for straps)
• Arc welder
• Gas torch or forge
• Angle grinder
• Measuring tape and marker
• Safety gear (gloves, goggles, apron)

FAQ

1. Can I build this without welding experience?

Arc welding is essential for this project. If you’re a beginner, practice on scrap metal first or take a short welding course. For simpler storage bench projects, you might start with wood.

2. How long does it take to build?

Depending on your skill level, it can take 2–4 days, including measuring, cutting, bending, welding, and finishing.

3. What finish should I use to prevent rust?

Apply a rust-inhibiting primer and paint designed for metal. Wrought iron often looks best with a matte black or dark gray finish. For outdoor decor, consider weather-resistant coatings.

4. Can I modify the design for a larger sink?

Yes, adjust the frame dimensions accordingly. Ensure the legs and crossbars are still 30×30 mm for strength. Browse kitchen islands and carts for complementary storage ideas.

5. Where can I find materials and tools?

Local hardware stores or online metal suppliers. For home improvement tools and accessories, check our curated collection.

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