Custom Cake Slice Boxes

Sizing Custom Cake Slice Boxes

Two measurements decide the size: the height of the slice and the length from the tip to the back of the crust. The angle of the wedge depends on how many slices you cut from each cake. A cake cut into eight has a wider angle than one cut into twelve or sixteen.

Measure your tallest cake, including any decoration on top, and add room so the lid does not touch the icing. If you sell several cake heights, size the box for the tallest and use a small card insert or a cake board for the shorter ones.

Send us your cake diameter, how many slices you cut and the height of the slice, and we will work out the wedge angle and box dimensions for you.

If you are switching from square boxes, bring one of your current slices on a plate to the measuring stage rather than relying on the recipe card. Real slices are rarely as neat as the numbers suggest.

Board, Coatings and Food Contact

Cake boxes are usually made from white or kraft folding board. White board looks clean and shows colour print brightly; kraft gives a homemade, artisan feel. For creamy and buttery cakes, a grease-resistant coating on the inside stops oil soaking into the board and leaving marks on the outside.

Food-contact grade board is available on request, which is important if the slice sits directly on the base of the box without a paper doily or board. Tell us what you sell, whether it will be refrigerated and how long it stays in the box, and we will suggest the right board and coating.

For chilled counters, condensation can soften board. A coated board holds its shape better when slices are taken in and out of the fridge. The coated and uncoated boards named above are compared in the board and card guide.

Branding That Works on a Small Box

The box is small, but it gets seen. A logo on the lid and a pattern on the sides is often enough. Some cafés print a short line on the inside of the lid, such as a thank-you or a reminder to keep the slice refrigerated, which is seen as soon as the box opens.

If you sell cakes from several bakers, keep the box neutral and add a sticker with the cake name. That way one box design works for every flavour, and the stickers can change daily.

Colour can do practical work too. A different box colour for vegan, gluten-free or nut-free slices helps staff pick the right box at a glance and reassures customers with allergies. Pair the colour with a clear sticker and keep the allergen information on your counter labels as usual.

Think about the moment the box is handed over. A customer holding a coffee in one hand will appreciate a box that closes with a firm tuck rather than a fiddly slot, and a handle means they can hook it over a finger. Small details like these make a slice to go feel like a treat rather than an afterthought. A single small logo on the lid is the usual choice, printed the same way as on printed cupcake boxes.

Who Uses Slice Boxes

Coffee shops sell slices to go alongside a takeaway drink. Dessert parlours and cake shops sell slices as a cheaper alternative to a whole cake. Restaurants pack leftover dessert for customers to take home. Caterers and event planners use them for wedding cake slices, so guests can take a piece home after the reception.

Online cake businesses send slice boxes in tasting packs, letting customers try several flavours before ordering a whole cake for a party. In that case, a small mailer with an insert holding three or four wedges keeps them upright in the post.

Supermarket cafés and garden centres with large cake displays also find wedge boxes useful, because staff can pack slices quickly at a busy counter and the boxes stack neatly in a bag with other shopping. Wedding caterers who hand out slices at the end of the night sometimes prefer the small pastry boxes with tuck lids for mixed desserts.

Measure the Slice at the Back Edge

A wedge box is defined by three numbers: the length from point to crust, the width across the back edge and the height of the slice including any decoration. Bakers often measure the length and forget the back width, which is what decides whether the slice slides in cleanly. Cut a typical slice, stand it on a board and measure all three, then add 5 mm to each so a tall swirl of buttercream does not touch the lid.

Send those figures with the style you prefer, any window or handle, the board and the quantity. A quote comes back by email within one working day, and the free proof shows the window outline against the wedge so you can see how much of the layer is visible. Boxes are made in 4 to 7 working days after approval and reach UK mainland addresses by tracked courier at no charge; crushed or misprinted boxes reported within 10 days are reprinted or refunded. Cafés that sell whole cakes too usually match the print to their full-size cake boxes.