DIY Humidor for Cigars: Build a Double-Bottom Cigar Box 2026

To keep your cigars at the perfect humidity level, build a DIY humidor with a double bottom that holds a sponge – always kept damp. A wooden diaphragm, drilled with many small holes, isolates the sponge from the lower end of the cigars placed in the upper compartment of the humidor. Through the holes in the diaphragm, the moisture‑rich microclimate circulates inside.

This DIY humidor is a hexagonal prism made of compact wood: iroko is the ideal choice because it’s easy to work with, has intense grain, and resists moisture. For the same reasons, assemble the pieces with marine glue – it’s white, sold as powder, inexpensive, and dries in about 8 hours. Since it’s a hexagonal prism, the six vertical walls must have their longitudinal edges cut at 30°. If you want easier access to the double bottom and sponge, build the container in two pieces that join with a tongue‑and‑groove; the joint is 40 mm from the base.

What You’ll Need

• One iroko strip 10×45 mm, 1200 mm long – cut into 6 pieces each 190 mm long
• One piece of marine plywood 200×200×6 mm
• Cascamite marine glue
• One bronze knob with threaded pin
• Washer and nut
• Shellac
• Circular saw, band clamp
• Back saw, drill press

DIY Humidor – The Project

Step‑by‑Step Construction

1. To cut the edges of the strip at a 30° angle, clamp it to the workbench. Using a circular saw tilted to 30°, shape both longitudinal edges of the iroko board.
2. After cutting the shaped strip into six pieces, apply a thin line of marine glue to all the angled edges. Use a fine brush and avoid drips.
3. A band clamp is perfect for applying even pressure around any shape. Position the strap at the center of the container and tighten it using the lever.
4. Use the outer perimeter of a hexagonal template to trace the lid. Use the inner perimeter of the same template to trace the inner lid, the bottom, and the diaphragm.

For the wood and finishing supplies, browse the Home Improvement collection at GrandGoldman. If you’re working outdoors, a sturdy shed or a dedicated work surface can make the project easier. Once your humidor is built, display it on a bookshelf or a display shelf in your living room. For the perfect finishing touch, add a lighting fixture above your smoking corner.

Frequently Asked Questions

1. Can I use a different wood instead of iroko?

Yes – any dense, moisture‑resistant hardwood like mahogany or cedar works well. For other DIY projects, check the Home Improvement section for woodworking essentials.

2. How often should I wet the sponge?

Check the sponge every 2–3 days. It should be damp, not soaking. Use distilled water to avoid mold. A garden supply spray bottle can help keep the humidity consistent.

3. Where should I place the humidor?

Keep it in a cool, dark place away from direct sunlight. A nightstand or a dresser works perfectly for a home cigar setup.

4. Can I make a larger humidor?

Absolutely – just scale up the dimensions and use a larger sponge. For bigger storage, consider a storage bench to keep your accessories organized.

5. What if I don’t have a band clamp?

You can use several regular clamps placed evenly around the hexagon. For other clamping needs, browse the Home Improvement collection.

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