I’ve rolled dice on bare tabletops for years, and the clatter still drives my partner nuts. Last spring, I built my first magnetic dice tray for a weekly D&D campaign, and it changed our sessions overnight. The lid snapped shut with a satisfying click, the felt muffled every roll, and stray dice stopped flying off the table when the dragon showed up.
A magnetic dice tray is a shallow wooden box with a steel sheet bottom, lined with felt or velvet, that keeps your dice contained during rolls. The lid (or sometimes the rolling surface itself) uses neodymium magnets to snap shut so nothing spills when you close it up to grab a snack or pack for game night.
In this guide, I’ll walk you through how to make a magnetic dice tray from scratch using basic tools. I’ll share the magnet strength numbers that actually work, the steel gauge I learned to use the hard way, and the felt thickness that quiets even the loudest metal dice set.
Table of Contents
What You Need to Build a Magnetic Dice Tray?
Before you start cutting wood, gather every material and tool on this list. Magnetic dice tray builds go much smoother when you have everything on the bench, and a few of these items (the magnets especially) often require a trip to a specialty supplier rather than the local hardware store.
Materials List
Hardwood boards: Four pieces for the sides (typically 1/2 inch thick by 2 inches wide, length depends on tray size). Walnut, maple, oak, and cherry all work well. A 8 inch by 10 inch interior rolling area is a good starting size.
Steel sheet: A thin cold-rolled steel sheet, 24 to 26 gauge (about 0.020 to 0.025 inches thick). This is the magnetic surface your dice will roll on. Thinner steel cuts easier but can warp, so 24 gauge is the sweet spot.
Neodymium magnets: N52 grade disc magnets, 1/4 inch diameter by 1/8 inch thick, with at least 6 lbs of pull force per magnet. Plan on 4 to 8 magnets total, depending on whether you want a magnetic closure, a magnetic rolling surface, or both.
Felt or velvet fabric: Wool blend or polyester felt in your color of choice, at least 1/8 inch thick for noise reduction. Black, deep green, and burgundy are the most popular for tabletop gaming accessories.
Wood glue: A waterproof Titebond II or III for the frame joints.
Spray adhesive: 3M Super 77 or similar to glue the felt to the steel.
Finish: Hardwax oil, polyurethane, or Danish oil to seal the wood.
Tools Required
You don’t need a full woodworking shop. Here is the basic tool kit for a magnetic dice tray:
Table saw, miter saw, or hand saw with a guide
Router with a 1/4 inch straight bit (or a chisel and patience)
Drill with a small bit for pilot holes
Sandpaper in 120, 180, and 220 grit
Tin snips or a Dremel with a cutoff wheel for the steel sheet
Clamps (at least two bar or pipe clamps)
Measuring tape, square, and pencil
Don’t have a router? You can substitute a sharp chisel and a piece of scrap wood as a depth guide. The grooves don’t need to be perfect; the felt and steel will cover them.
How to Make a Magnetic Dice Tray Step by Step?
Now for the fun part. Follow these seven steps and you’ll have a working magnetic dice tray by the end of a weekend. Most builders spend about 4 to 6 hours total, with drying time adding another 2 to 4 hours.
Step 1: Measure and Cut Your Wood Pieces
Start by deciding on the interior rolling area. An 8 inch by 10 inch rectangle fits a full set of seven polyhedral dice plus room for dramatic rolls. Cut four side pieces to that length plus twice the width of your wood (so the corners overlap or miter cleanly).
If you’re new to woodworking, mitered corners are forgiving because you can sand small gaps flush. If you have a table saw and a dado blade, rabbet joints at the corners are stronger and look cleaner. For this build, we’ll assume mitered corners since they’re beginner-friendly.
Tip: Cut one piece at a time and check the fit. A 1/16 inch gap is much easier to fix with wood filler than a too-short side.
Step 2: Cut the Grooves for the Bottom Panel
The steel sheet (with felt glued on top) sits inside the frame, so you need a groove along the inside bottom edge of each side piece. Set your router to a depth equal to your steel thickness plus felt thickness plus 1/16 inch. For 24 gauge steel and 1/8 inch felt, that’s about 3/16 inch deep.
Run each side piece along the router table fence with the inside face down. Take shallow passes to avoid burning the wood. If you don’t have a router, mark the groove depth with a chisel and pare out the waste carefully.
Test fit the steel sheet before moving on. It should slide into the grooves snugly without forcing, and sit flat across the entire bottom.
Step 3: Glue Up the Frame
Dry fit all four pieces first to make sure the corners sit flush. Apply a thin bead of wood glue to each mitered end, then clamp the frame together with your bar clamps. Check for square by measuring corner to corner; both diagonals should be equal.
Wipe away excess glue with a damp rag before it dries. Let the frame cure for at least 2 hours, ideally overnight. Resist the urge to pull the clamps early; the joint strength comes from complete drying.
If you want extra reinforcement, drive a small brad nail or two through each corner while the glue is still wet. Pre-drill to avoid splitting.
Step 4: Prepare the Steel Sheet Bottom
Measure the inside dimensions of your frame’s groove and subtract 1/16 inch from each side for expansion. Mark those dimensions on your steel sheet, then cut with tin snips for straight lines or a Dremel for curves.
Wear gloves when handling cut steel. The edges are sharp enough to slice skin easily. File or sand the edges smooth once you’re done cutting.
Test fit the steel sheet in the grooves again after cutting. It should drop in cleanly without binding. If it’s tight, sand the edges; if it’s loose, you can shim with thin cardboard later.
Step 5: Install Neodymium Magnets
This is where most first-time builders get tripped up. Neodymium magnets are brittle and will shatter if you squeeze them, so they need a properly sized pocket. Decide whether you want magnets on a lid, in the frame for closure, or both.
For a magnetic closure, drill shallow holes (1/16 inch deep) into the frame’s top edge and the corresponding lid edge. Press the magnets in with epoxy. Make sure you orient the poles correctly so the lid attracts rather than repels.
For a magnetic rolling surface (where dice themselves snap to the bottom), the steel sheet handles that part, and no extra magnets are needed in the base. Many builders use magnets only for closure and rely on the steel sheet for the rolling surface.
Magnet strength tip: Aim for 6 lbs of pull force or higher per magnet. Lower-grade N35 or N42 magnets will not hold a heavy wooden lid reliably. N52 grade gives you the strongest commercially available pull in a small size.
Step 6: Line the Tray with Felt
Cut your felt about 1 inch larger than the steel sheet on all sides. Lay the steel sheet on a flat surface, spray it lightly with adhesive, and press the felt down from one end to the other to avoid bubbles.
Once the felt is bonded, trim the excess flush with the steel edges using a sharp utility knife. Slide the lined steel sheet into the frame’s grooves. It should fit snugly, with the felt facing up as your rolling surface.
Felt thickness matters more than most guides mention. A 1/8 inch wool blend felt dampens the dice noise significantly and feels luxurious. Thinner craft felt (under 1/16 inch) lets metal dice sound tinny and harsh.
Step 7: Attach the Magnetic Closure Lid (Optional)
If you want a hinged lid with magnetic closure, cut a separate piece of wood to match the outside dimensions of your frame. Attach two small brass hinges to the back edge. Install paired magnets in the front edge of the lid and the frame.
Test the closure by closing the lid a few times. It should snap shut with a satisfying click and stay closed even if you turn the tray upside down and shake it gently.
For a bookbound or folding design, skip the rigid lid entirely. Use leather or thick fabric covers with hidden magnets that align when folded. These are popular for portable trays you can throw in a backpack.
Finishing Tips and Customization Ideas
The build is functional now, but a few finishing touches turn it into a piece you’ll proudly display at the game table. Here’s how to polish your magnetic dice tray and make it your own.
Sanding and Sealing the Wood
Sand the frame progressively from 120 to 220 grit, rounding over any sharp edges. Dust it off with a tack cloth, then apply your chosen finish with a soft rag or brush. Hardwax oil like Osmo Polyx-Oil gives a natural, food-safe feel. Polyurethane is more durable for heavy use.
Two coats is usually enough. Let each coat dry fully (check the can for times), and sand lightly with 320 grit between coats for adhesion.
Custom Felt Colors and Patterns
Velvet gives the most luxurious rolling feel, but felt is easier to source and work with. Black is the classic tabletop gaming choice because it makes dice colors pop. Forest green, deep red, and royal purple are popular for matching character themes.
For a unique touch, cut shapes or runes out of a contrasting felt color and glue them to the base layer. Stars, dragons, faction symbols, and geometric patterns all work well.
Adding Personal Touches
Woodburning your character’s initials or party logo into the lid takes about ten minutes with a basic pyrography pen. You can also inlay a small piece of colored leather or a metal coin into the lid as a focal point.
Some builders route a small channel around the inside of the frame to hold a removable felt insert. This lets you swap colors for different characters or campaigns without rebuilding the tray.
Magnetic Closure Variations
Beyond the simple hinged lid, you can create modular designs where the tray base connects to other accessories via magnets. A dice tower, a card holder, and a mini storage box can all share a magnetic connection system, letting you rearrange your setup between sessions.
For travel, a magnetic closure on a folding bookbound design is hard to beat. The whole tray collapses flat, the magnets hold everything together, and it weighs under a pound.
Frequently Asked Questions
How strong should magnets be for a dice tray?
Aim for N52 grade neodymium magnets with at least 6 lbs of pull force each. Lower grades like N35 or N42 will not hold a heavy wooden lid reliably, especially if the lid has any warp. For a magnetic rolling surface instead of a closure, you only need the steel sheet; the magnets themselves aren’t required in the base.
What gauge steel sheet works best for a magnetic dice tray?
24 gauge cold-rolled steel (about 0.025 inches thick) is the sweet spot for most magnetic dice tray builds. It’s thick enough to stay flat without warping, but thin enough to cut with tin snips or a Dremel. 26 gauge works for smaller trays but may flex. Anything thicker than 22 gauge requires power tools to cut cleanly.
Can I build a magnetic dice tray without power tools?
Yes. You can substitute a sharp chisel for the router by marking groove depth carefully and paring out waste in thin layers. Cut steel with aviation snips instead of power tools. The mitered corners can be cut with a hand saw and miter box. The project takes longer without power tools but the finished result is identical.
What felt thickness quiets dice best?
A 1/8 inch wool blend felt is the best choice for noise reduction. It dampens metal dice impact noticeably and feels soft to the touch. Craft felt under 1/16 inch is too thin and lets dice sound tinny. Wool felt costs more than synthetic but lasts longer and looks more refined for tabletop gaming accessories.
Start Building Your Magnetic Dice Tray Tonight
Building a magnetic dice tray from scratch is one of the most rewarding weekend projects for any tabletop gamer. You get a custom piece of gear that fits your style, contains your dice during dramatic rolls, and travels easily to game night. The materials cost less than most commercial trays, and the build teaches basic woodworking skills you’ll use again.
Start with a simple 8 inch by 10 inch frame, pick up N52 neodymium magnets and a 24 gauge steel sheet, and you’ll have a finished magnetic dice tray in two days. Once you’ve built one, you’ll find yourself designing modular accessories and making them as gifts for your whole playgroup.