How To Build an MDF Storage Bench

A solid storage bench provides seating and storage space, making it perfect for entryways, mudrooms, or bedrooms. Medium-density fiberboard (MDF) is an excellent material choice for this project due to its affordability, durability, and easy use. In this guide, we’ll walk you through the process of building an MDF storage bench, complete with cubbies for organizing shoes and other items. In the video above, This Old House expert Tom Silva demonstrates the construction process, offering valuable insights and building tips.

Materials and Tools Needed To Build a Storage Bench

Building a storage bench begins with gathering the right materials and tools. 

Materials

• 1 sheet of 3/4-inch MDF
• Bench cushion
• Paint or finish of your choice
• Sandpaper (various grits)
• Storage baskets or bins
• Wood glue
• Wood screws

Tools

• Brad nailer
• Drill and drill bits
• Miter saw
• Palm sander
• Pencil and straightedge
• Router with a straight bit
• Safety glasses and hearing protection
• Table saw
• Track saw or circular saw

Preparing the MDF

You’ll first need to prep the fiberboard to make it work for your project. 

Cutting the MDF to Size

Use a track saw or circular saw to bring the MDF sheet to a workable size corresponding with your bench dimensions. Establish the cubbies’ locations by measuring and marking these points with a pencil and straightedge. Divide the sheet across the marks to form the bench’s top and bottom pieces.

Creating Dados and Rabbets

Dados and rabbets allow for better structural integrity. Equip your router with a straight bit to carve dados along the marked points for the dividers. Fabricate rabbets on the bottom by trimming the edges at both ends of the dado lines. Utilize predrilled holes in the dados for easier fastening during assembly.

Cutting and Sanding the Pieces

Careful cutting and sanding will make your project go more smoothly and lead to a more professional-looking result. 

Cutting Additional Pieces

With a table saw, trim the sides, dividers, and back pieces of the bench according to the desired measurements. Use a miter saw to shape the toe kick components, achieving accurate angles for a snug assembly fit.

Sanding

Start with coarse sandpaper (80-grit) to eliminate rough patches or edges. Proceed with finer grits (120-grit, then 220-grit) to achieve a refined finish. Focus on the MDF’s edges, which are prone to splintering, ensuring they’re fully smoothed before progressing.

Assembling the MDF Storage Bench

All pieces are now ready for assembly. Bringing everything together involves aligning, gluing, and securing each part to construct the final product.

Gluing and Screwing

Gluing and screwing the components together creates a sturdy structure. Dab wood glue onto the dados and rabbets of the bottom piece. Fit the dividers into the dados, positioning the sides and back into the rabbets. Use wood screws, using the predrilled holes as guides for secure fastening. Tackle one joint at a time, taking note that MDF readily absorbs glue.

Building the Toe Kick

The toe kick acts as the foundation upon which the bench rests. Construct the toe kick box with wood glue and brad nails, ensuring all mitered corners align precisely. Add filler pieces behind each section of the toe kick to add reinforcement. Center another MDF piece for additional support and nail it for increased stability.

Attaching the Bench to the Toe Kick

Spread wood glue on the toe kick’s top. Gently lower the assembled bench onto the toe kick, verifying it’s centered and even. Use brad nails around the edge for added security.

Finishing Touches on Your MDF Storage Bench

Finalizing the bench includes addressing visual and structural points, ensuring a polished, sturdy piece of furniture.

Filling and Sanding

Addressing any imperfections enhances the bench’s appearance. Use wood filler on visible screw holes or nail depressions. After the filler sets, sand the surface smooth.

Painting or Finishing

Opt for a paint or finish that complements your existing decor while safeguarding the MDF. If necessary, apply a primer before painting or finishing, adhering to any specific guidelines provided by the manufacturer. Allow ample drying time before proceeding.

Adding the Cushion and Baskets

Completing the bench involves incorporating your chosen accessories. Add a comfortable bench cushion to the top. Fit storage baskets or bins into the cubbies, adding convenient organization.