This step by step diy project is about how to build a trundle bed. Building a trundle bed frame is a basic project is you take accurate measurements and choose straight forward carpentry techniques. Align all the components and drill pilot holes before inserting the screws, if you are decided to get the job done as a professional and to keep the costs under control.
This bed frame is designed for a standard twin mattress, in other words for a 39″ x 75″ mattress. Nevertheless, we strongly recommend you to take accurate measurements before starting the project. Therefore, you should check if the trundle bed will fit under the existing bed, before starting the actual construction. In our case, we have designed the trundle bed to fit under a simple daybed. You can see here how to build the daybed.
Generally speaking, trundle beds should have a twin size, especially if your room is short of space. From our experience, we recommend you to add caster wheels to the bed frame, as to slide it in and out, whenever you need additional sleeping space. Sand the exposed edges of the bed frame with a sanding block and clean the residues before applying the costs of stain or paint.
Building a trundle bed frame
- A – 2 pieces of 2×2 lumber – 79” long, 2 pieces of – 40” long FRAME
- B – 2 pieces of 1×6 lumber – 77 1/2” long CLEATS
- C – 11 pieces of 1×4 lumber – 40″ long SLATS
- D – 4 pieces of caster wheels – 2 1/2” long WHEELS
- Safety gloves, glasses
- Miter saw, jigsaw
- Chalk line, tape measure, spirit level, carpentry pencil
- Drill machinery and drill bits
- Apply several coats of wood stain to the wooden components
- Fill the holes with wood filler and smooth the surface
- One Day
How to build a trundle bed
The first step of the woodworking project is to build the frame of the trundle bed. As you can see in the image, we are going to use 1×10 lumber for this project, by you could use 1×6, 1×8 or even 1×12 lumber, as to suit your needs. In addition, you should modify the size of the bed frame as to make sure it fits under the initial bed.
Smart tip: Check if the corners of the bed frame are right-angled, drill pilot holes and insert galvanized screws. You could use pocket holes or drill regular holes and countersink their heads.
The next step of the project is to attach 2×2 cleats to both sides of the bed frame. As you can notice in the image, we recommend you to fit three cleats, if you want to provide support to the wooden structure. Pre-drill the cleats and inset galvanized screws into the side components. In addition, add waterproof glue to the joints, if you want to create a rigid structure.
Afterwards, you should attach the support slats to the cleats and space them properly. Drill several pilot hole at both ends of the slats and insert screws into the cleats. Make sure the top of the mattress is at the same level with the frame, if you want to get a professional appearance.
One of the last steps of the project is to attach the 2 1/2″ caster wheels to the bed frame, as in the free plans. Align the wheels and secure them to the cleats with galvanized screws.
Last but not least, we recommend you to take care of the finishing touches. Fill the holes with wood filler and let it to dry out for several hours. Afterwards, smooth the wooden surface with fine-grit sandpaper and vacuum the residues. Fit the trundle bed under the existing bed and enjoy the additional sleeping space whenever is necessary.
Smart tip: Apply several coats of stain or paint to the wooden components, if you want to protect them from decay and to enhance the look of the bed frame.
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