Square MDF Board | 4 Inch | 3.3mm Thick - Resin Magnets & Coasters

Square MDF Board 4 Inch 3.3mm Thick, Smooth Wooden Base for Resin Magnets, Mini Coasters, and Small Craft

This square MDF board measures 4 Inch and is 3.3mm thick, a smooth, sturdy wooden base made for art and craft. At 3.3mm thick and 4 Inch, this is a handy lightweight base for small craft like magnets, coasters, and resin pieces. MDF takes acrylic and oil paint, resin, clay, and mirror work beautifully. Both sides are smooth and unfinished, ready for you to sand, prime with gesso, and create.

Key Features

• Shape: Square | Size: 4 Inch | Thickness: 3.3mm
• Smooth, unfinished MDF surface on both sides, ready to paint or pour
• Strong and flat, resists warping under paint, resin, and clay
• Handy lightweight size for magnets, coasters, and small craft
• Precision-cut clean edges, a reliable base for detailed work

Where You Can Use This

• Fridge magnets and resin magnets
• Mini coasters and tea-light bases
• Resin art and small resin pieces
• Acrylic painting, decoupage, and small art
• Jewellery bases, keychains, and keepsakes

How to Prepare and Use (Gesso Priming)

• Lightly sand the surface and edges with fine sandpaper, then wipe clean
• Apply 1 to 2 coats of white gesso to prime, this stops the MDF absorbing paint and prevents yellowing
• Let the gesso dry, then sand lightly again for a smooth finish
• Paint, pour resin, or work your design
• For resin or chalk paint you can work more directly, though a gesso seal gives the best result

Why Choose JustKraft

JustKraft MDF boards are precision-cut, smooth, and flat, giving artists a reliable base that holds detail and resists warping, matched to the right thickness and size for your craft.

Complete Your Setup

Pair this MDF board with white gesso primer, acrylic paints, and the right supplies for your craft, Lippan mirrors and clay, mandala dotting tools, or epoxy resin.

Frequently Asked Questions

Q: What can I make with this MDF board?
A: This 4 Inch, 3.3mm board is suited to fridge magnets, mini coasters, resin magnets, small painting, decoupage, and keychains.

Q: Do I need to apply gesso before painting?
A: For acrylic and oil paint, yes, prime with white gesso so the board does not absorb the paint and to keep colours vibrant. For resin or chalk paint, a primer is not essential, though gesso sealing helps.

Q: What size and thickness is this board?
A: This board is square in shape, 4 Inch in size, and 3.3mm thick.

Q: Is this board good for string art?
A: This board is on the thinner side, so it suits painting, resin, Lippan, and mandala work rather than string art, which needs a thicker 8mm or 12mm board.

Q: Is this size good for Lippan or mandala art?
A: This is a small base, best for magnets, coasters, and small resin or painted pieces rather than full Lippan or mandala art, which need a larger board.

Q: Is the board smooth on both sides?
A: Yes. Both sides are smooth and unfinished, so you can paint, pour, or decorate on either face.