A first aid box is one of those essential items every home should have — but most of the ones you buy are plain plastic and completely forgettable. In this project, we build a wall mounted wooden first aid box that is both functional and a beautiful addition to any room. With over 6,000 views and 101 likes, this tutorial has proven to be one of the most practical woodworking projects on the AstonishingDIY channel.
Why build a wooden first aid box?
Plastic first aid boxes get the job done, but they rarely match the aesthetic of a carefully decorated home. A handmade wooden first aid box gives you full control over the size, finish, and style. You can make it as simple or as decorative as you like — paint it white with a red cross for that classic look, stain it to match your furniture, or leave it natural for a rustic feel.
Wall mounting is the key advantage here. Unlike a box stored in a drawer or cupboard, a wall mounted first aid box is always visible and immediately accessible in an emergency. It also serves as a gentle reminder to keep it stocked and up to date — something that rarely happens with boxes tucked out of sight.
Materials and tools you will need
This is a beginner-friendly project that requires only basic woodworking tools. Here is what you will need to get started:
- Timber boards (pine works well and is widely available)
- Wood glue and clamps
- Saw — a hand saw or circular saw
- Drill and screws
- Sandpaper (80, 120, and 220 grit)
- Hinges and a small latch or magnetic catch for the door
- Wall mounting hardware — keyhole brackets or a French cleat work best
- Paint, stain, or varnish of your choice
The dimensions are entirely up to you depending on what you plan to store inside. A good starting size is around 30cm wide, 25cm tall, and 10cm deep — enough space for bandages, antiseptic, scissors, and the usual first aid essentials without taking up too much wall space.
How to build the wooden first aid box step by step
Start by cutting your timber to size. You will need two side panels, a top and bottom panel, a back panel, and a front door. Cut all pieces to your chosen dimensions and sand the edges smooth before assembly.
Assemble the box using wood glue and screws, making sure all corners are square. Clamp everything together while the glue dries. Once dry, attach the back panel — this is also the piece you will use to mount the box to the wall, so make sure it is solid and well secured.
Fit the door using two small hinges on one side and a latch or magnetic catch on the other. The door should open and close smoothly without any gaps around the edges. If needed, plane or sand the edges of the door until it fits perfectly.
Sand the entire box thoroughly, working through the grits from coarse to fine. Apply your chosen finish — two coats of white paint with a red cross stencilled on the front is the most recognisable look, but a clear varnish over natural pine looks equally striking. Finally, attach your wall mounting hardware to the back and hang it in position.
Tips for a professional finish
A few small details make a big difference to the final result. Always sand with the grain of the wood rather than against it — this prevents visible scratch marks in the finish. Use a wood filler or putty to fill any screw holes or gaps before painting, especially if you are going for a painted finish.
When mounting on the wall, use a spirit level to make sure the box hangs straight. Locate the wall studs if possible and screw directly into them for a secure fixing — a first aid box needs to be reliable, so it should not be mounted on plasterboard alone without appropriate wall anchors.
Inside the box, consider adding a small shelf or divider to organise the contents. A strip of wood glued horizontally across the middle of the interior creates two compartments and keeps everything tidy and easy to find in a hurry.
Watch the full tutorial
The step-by-step build is all shown in detail in the video above. If you want to follow along at your own pace, head over to the full tutorial on YouTube where you can pause, rewind, and take your time with each stage: Watch on YouTube. If you found this helpful, a like and subscribe on the channel goes a long way in supporting more free DIY woodworking content.