Building a 100 cm sideboard can be a rewarding woodworking project, but the best results come from planning the construction before cutting any timber. Decide how the sideboard will be used, measure the available space, choose a realistic design and confirm the materials and hardware before you start.
This guide explains the main decisions involved in making a compact sideboard with doors, drawers or open shelving. It is a planning and construction guide rather than a substitute for the instructions supplied with your tools, hardware or finishing products.
Before You Start
A sideboard is a large, heavy piece of furniture. Before cutting timber, make sure you have a stable work area, suitable tools, adequate ventilation and a safe way to move the finished piece.
- Use eye, hearing and respiratory protection appropriate to the tool and material.
- Read the instructions for saws, routers, sanders, adhesives, finishes and drawer hardware.
- Use a stable workbench and support long boards during cutting.
- Do not work alone when moving a heavy carcass or solid-wood top.
- Plan how the finished sideboard will enter the room before you build it.
Why Build a 100 cm Sideboard?
A sideboard around 100 cm wide can work well where you need useful storage without filling an entire wall. It can suit a dining room, living room, hallway or home office, depending on its height, depth and internal layout.
The main advantages of building your own are:
- Control over dimensions: Adapt the height, depth and internal storage to your room.
- Choice of materials: Select solid timber, plywood, veneered panels or a combination that suits the design.
- Custom storage: Choose drawers, doors, shelves or open compartments according to what you need to store.
- Design flexibility: Create a modern, rustic, painted or mixed-material finish.
- Skill development: Practise measuring, cutting, joinery, finishing and hardware installation.
DIY is not automatically cheaper than buying a finished sideboard. Add up timber, sheet goods, hardware, finish, consumables, tool hire and the value of your time before deciding whether to build or buy. You can compare your estimate with 100 cm wide sideboards before committing to the project.
Plan the Design
Start with a drawing that shows the front, side and top of the sideboard. Mark the external dimensions, internal openings, shelf positions, door swings, drawer sizes, plinth or legs and back-panel position.
A width of 100 cm is only one measurement. You must also choose:
- Overall height.
- Overall depth.
- Carcass and panel thickness.
- Number and position of doors.
- Number, height and width of drawers.
- Fixed or adjustable shelving.
- Legs, a plinth or a recessed base.
- Back-panel material and fixing method.
- Finish and hardware style.
Remember that 100 cm is approximately 39.37 inches. The exact dimensions of commercial 100 cm sideboards vary, so use category pages for design inspiration rather than copying a product specification without checking it. [59]
Measure the Room
Measure the available width, height and depth. Check skirting boards, sockets, radiators, doors and walkways. If the sideboard will sit in an alcove, measure at several points because walls may not be perfectly square.
Leave clearance for doors and drawers to open fully. If you plan to place a television, lamp or heavy display items on top, include those requirements in the design rather than adding them later.
Choose a Realistic Construction
For a first project, a simple carcass with doors or open shelves is usually more manageable than a design containing several drawers, curved parts, sliding doors and complex joinery.
Possible layouts include:
- Two-door cabinet: A straightforward design with one or two internal shelves.
- Drawer-and-door combination: Useful when you need both concealed storage and smaller compartments.
- Open shelving: Easier to build, but contents remain visible and collect dust more readily.
- Mostly drawers: Practical for smaller items but more demanding because every drawer must be accurately sized and aligned.
- Sliding-door cabinet: Attractive in a modern room, but requires accurate tracks and clearance.
For inspiration, compare the proportions of two-door sideboards before choosing your own layout.
Materials and Hardware
Your materials list will depend on the design, but a typical sideboard may require:
- Solid timber, plywood or veneered sheet material for the carcass.
- Solid timber or prepared panels for the doors and face frame.
- Drawer sides, backs and bases if drawers are included.
- Fixed shelf supports or adjustable shelf pins.
- Hinges suitable for the door weight and overlay.
- Drawer runners matched to the drawer design.
- Handles, knobs or finger pulls.
- Wood glue suitable for the materials being joined.
- Appropriate screws, dowels, biscuits or other planned fixings.
- Sandpaper and finishing materials.
Do not choose board thickness only by appearance. The carcass, shelves, doors and top each have different structural demands. Follow the recommendations of the hardware manufacturer and allow for the actual thickness of every component.
Tools and Workshop Setup
Depending on your chosen construction method, you may need:
- A tape measure, pencil, marking knife and accurate square.
- A circular saw with a guide rail or a table saw.
- A drill and suitable drill bits.
- Clamps and a flat assembly surface.
- A screwdriver or driver bit set.
- A sander and suitable dust extraction.
- Jigs for shelf pins, hinges or pocket holes if required.
- Safety glasses, hearing protection and suitable respiratory protection.
Accuracy matters more than owning every possible tool. If you cannot safely make large, straight cuts, ask a timber supplier to cut sheet material to size or choose a simpler project.
Make a Cutting Plan
Do not begin by cutting random pieces from a board. Create a cutting list that includes the finished size, material thickness, quantity and grain direction of every component.
Your list may include:
- Two side panels.
- A top and bottom panel.
- Internal dividers.
- One or more shelves.
- Door panels or door rails and stiles.
- Drawer fronts, sides, backs and bases.
- A back panel.
- Face-frame components, legs or plinth parts.
Allow for saw kerf, trimming, edge treatment, expansion and the clearances required by your hinges and drawer runners. Label each component after cutting so similar parts do not get mixed up.
Build the Carcass
Dry-fit the main panels before applying glue. Check that the parts are square, the openings are the intended size and the back panel will sit correctly.
- Prepare and label the side, top, bottom and divider panels.
- Mark the positions of shelves, dividers and fixings.
- Assemble the main carcass using the joint method you selected.
- Check diagonals to confirm the carcass is square.
- Fit the back panel in the way shown on your design.
- Allow adhesives to cure according to the manufacturer’s instructions.
The back panel is important: it can help keep the carcass square, but only if it is fitted accurately and the construction is designed for it. Do not treat a thin decorative backing as the sole structural support for a heavy sideboard.
Add the Face Frame, Legs or Plinth
A face frame can stiffen the front of a cabinet and provide a finished edge around doors and drawers. A separate leg or plinth design changes the appearance and affects how the weight is transferred to the floor.
- Cut the face-frame or base components accurately.
- Dry-fit them against the carcass.
- Check that openings are square and consistent.
- Attach the frame or base using the planned joint and fixing method.
- Check that the completed unit sits level before moving on.
If your floor is uneven, consider adjustable feet or a design that can be levelled safely. Do not use loose packing material as a permanent structural solution.
Build and Fit Drawers
Drawers require careful measurement because small errors can cause sticking, uneven gaps or runners that do not operate smoothly.
- Confirm the required drawer-opening dimensions from the runner instructions.
- Cut the drawer sides, front, back and base to suit the chosen construction.
- Assemble the box and check it is square.
- Install the runners according to the manufacturer’s measurements.
- Fit the drawer front after the box operates smoothly.
- Adjust the front and gaps before installing the handle.
Dovetail joints can be strong and attractive, but they require appropriate tools and practice. Butt joints, dowels, pocket holes or other methods may be suitable when designed and reinforced correctly.
Make and Fit Doors
Choose slab doors if you want a simpler build. Framed doors with rails and stiles can create a more traditional appearance but require more accurate joinery.
- Cut the doors to the planned finished size.
- Check that the grain direction and appearance suit the design.
- Sand the parts before fitting hardware.
- Install hinges using the manufacturer’s template or measurements.
- Fit the doors and adjust the hinges gradually.
- Check the gaps, swing and handle position.
Do not rely on the hinge adjustment to correct a badly out-of-square carcass. Correct the underlying construction first.
Sand and Finish the Sideboard
Sand progressively and inspect the surface under good lighting. Remove glue squeeze-out before finishing, because dried glue can prevent stain or oil from absorbing evenly.
Choose a finish according to the intended use:
- Oil: Can enhance the grain but may require periodic maintenance.
- Wax: Can create a pleasant sheen but may offer less resistance to heavy moisture and heat than some film finishes.
- Varnish or lacquer: Can provide a more protective surface when applied correctly.
- Paint: Useful for a coloured or two-tone design, but requires suitable preparation and primer.
Test the finish on an offcut first. Follow the product instructions for ventilation, drying time, recoating and disposal of used cloths. Some oil-soaked cloths can create a fire risk if they are not stored and disposed of safely.
For a look inspired by oak sideboards, compare natural, rustic and painted finishes, but do not expect a home-applied finish to reproduce a commercial product exactly.
Hardware and Final Assembly
- Install or adjust drawer runners.
- Fit and align the doors.
- Attach handles or knobs using a template.
- Check that shelves are properly supported.
- Confirm that the sideboard sits level.
- Inspect all fixings before loading it.
Do not overload shelves or the top beyond the capacity of the materials and hardware. If the finished unit is tall, assess whether it should be secured to the wall using an appropriate anti-tip method.
Design Variations
Two-Door Cabinet
A simple two-door cabinet gives you concealed storage and is a good starting point for a first sideboard project. It can include one fixed shelf or adjustable shelves.
Drawer-and-Door Combination
This layout combines smaller drawer storage with a larger cabinet area. It is useful when you want to separate everyday items from larger objects.
Open Shelf and Cabinet
Open shelves can display books, baskets or decorative pieces while the cabinet hides less attractive items. Consider dust and visual clutter before choosing this layout.
Multi-Drawer Design
Several drawers can be useful for small items, but every opening and runner must be accurately planned. This design is more demanding than a simple cabinet.
Sliding-Door Design
Sliding doors can create a clean modern appearance and avoid a door swing into the room. They require accurate tracks, suitable clearances and a carcass that remains square.
Common Problems and Safer Fixes
Doors Are Not Aligned
Check whether the carcass is square, then adjust the hinges according to their instructions. Do not remove large amounts of material until you have identified the cause of the misalignment.
Drawers Stick
Check that the runners are parallel, the drawer box is square and the clearances match the runner requirements. A warped component may need to be remade rather than forced into place.
Visible Gaps
Small gaps may be improved with careful adjustment or suitable filler, but filler should not be used to hide a structural problem. Recheck the measurements and joints before finishing.
The Sideboard Rocks
Check the floor, base and overall squareness. Adjustable feet can help when the design allows for them. A heavy piece should sit securely before it is loaded.
The Finish Looks Uneven
Allow the surface to dry fully before deciding whether it needs another coat. Uneven sanding, glue residue, inconsistent absorption and insufficient drying time can all affect the appearance.
Care and Maintenance
- Dust with a soft cloth.
- Clean spills promptly.
- Use coasters and mats on the top.
- Keep standing water away from joints and edges.
- Follow the care instructions for the chosen finish.
- Check and tighten hardware when necessary.
- Do not drag the finished sideboard across the floor.
If the sideboard is made from solid wood, remember that timber can respond to changes in humidity. Avoid placing it directly beside strong heat sources and allow the construction to accommodate normal movement.
Make the Project More Sustainable
- Choose responsibly sourced timber where available.
- Use offcuts for test pieces, handles or small shelves.
- Prefer repairable designs over disposable trends.
- Use finishes with appropriate environmental and indoor-air information.
- Plan your cutting layout to reduce waste.
- Design the sideboard so hardware and damaged parts can be replaced.
DIY or Ready-Made?
Building your own sideboard gives you control over the design, but it also requires time, tools, workspace and confidence with accurate cutting and assembly.
Compare your complete DIY estimate with ready-made options such as Oak Castle Furniture sideboards. Include materials, hardware, finish, delivery of materials, tool hire, mistakes and the value of your time.
A ready-made sideboard may be the better choice if you need a precise finish, have limited tools or cannot safely move and assemble a heavy cabinet. A DIY build may be worthwhile when custom dimensions, personal design and the learning experience matter most.
Showcasing the Finished Sideboard
Once the sideboard is complete, check it in the room under the lighting you normally use. Confirm that doors and drawers have enough clearance, the top is level and the base is secure before styling it.
You can take inspiration from the styling of a small sideboard, but keep the top practical: avoid overloading it and leave access to drawers, doors and sockets.
Final Checklist
- Have you measured the room, access route and finished sideboard?
- Have you chosen materials suitable for the top, carcass, doors and shelves?
- Have you checked the hardware measurements before cutting?
- Is the carcass square and properly supported?
- Do the doors and drawers operate without force?
- Has the finish been tested on an offcut?
- Is the finished unit level and safe to load?
- Does it need anti-tip or wall-fixing protection?
Conclusion
Building a 100 cm sideboard can give you a piece tailored to your space, storage needs and personal style. The most successful projects are not rushed: they begin with accurate measurements, a realistic design, a complete materials list and a clear plan for the joinery and finish.
You do not need to start with the most complicated design. A well-made cabinet with straightforward doors or open shelving can teach you the fundamentals before you move on to drawers, sliding doors or more decorative details.
If you decide that buying ready-made is the better route, compare the dimensions, materials, finish, assembly and delivery details of 100 cm wide sideboards before ordering.