Build an Ottoman Storage Bed: Gas Struts & Furniture Connectors Checklist

A functional storage bed requires precisely calculated gas struts often exceeding 1000 N of force, as well as high-strength furniture connectors to securely absorb the dynamic loads of the slatted base.

Building a bed with integrated storage is an ambitious construction project. The challenge lies not in mere woodworking, but in correctly dimensioning the lifting mechanism and frame connections. A bed frame is constantly exposed to shear forces and dynamic loads. Standard wood screws quickly reach their limits here. Likewise, an incorrectly calculated lever mechanism results in a slatted frame that either cannot be lifted at all or shoots upwards uncontrollably.

This guide is aimed at joiners and skilled installers who are constructing an ottoman bed box and need to select the right fittings based on strict technical criteria.

Key Purchasing Criteria for Ottoman Bed Fittings

The choice of fittings determines the durability and safety of the construction. Pay attention to the following specifications.

1. Force and Stroke of Gas Struts

The heart of the lift-up mechanism is the gas strut. Its force is specified in Newtons (N). The required nominal force depends on the total weight of the load to be lifted (slatted base plus mattress plus bedding) and the lever arm. In addition to force, the stroke (the maximum travel distance of the piston rod in mm) is critical. A stroke that is too short results in a small opening angle, making the storage space difficult to access. Standard beds typically use a stroke of 200 mm - 350 mm with a total extended length of 400 mm - 600 mm.

2. Load Capacity of Furniture Connectors

A bed frame must be demountable. Therefore, glued joints or simple wood screws are out of the question. The furniture connectors used must absorb high tensile forces. The standard for beds is metric threaded fixings (usually M6 or M8) engaging with a threaded insert or prong nut. For constructing the internal box (the actual storage compartments), traditional cam and pin connectors for board thicknesses of 16 mm or 19 mm are utilised.

3. Ground Clearance and Load Capacity of Bed Legs

If the bed base is not designed to sit flush with the floor, the legs must bear the total weight of the structure plus the occupants. Metal bed legs with a height of 15 cm or 20 cm are common dimensions to provide sufficient clearance for robotic vacuum cleaners. Connection to the frame must be achieved via heavy-duty mounting plates (secured with at least 4 screws) or continuous threaded rods.

Overview of Types and Options

Different fitting solutions are available depending on the construction style of the bed.

Lifting Mechanisms

• Standard gas struts: Suitable for single beds or lightweight foam mattresses. Forces of 300 N - 800 N. Available in the basic category for gas struts.
• Heavy-duty struts: Essential for double beds with a one-piece slatted base and heavy pocket-sprung mattresses. Here, gas struts for heavy flaps with 1000 N, 1200 N, or even 1500 N per side are used.
• Colour variations: For open designs or visible mechanisms, you can match aesthetics, for instance by choosing a gas strut in black for dark timber.

Frame and Carcase Connectors

• Bed hook brackets: A classic metal hook-in connector. Requires precise recessing into the side rails, but offers an extremely stable, invisible, and tool-free demountable connection.
• Heavy-duty angle brackets: Solid steel brackets (material thickness 2.5 mm - 3 mm) screwed into the corner areas of the bed. They frequently double up as support surfaces for the slatted frame.
• Minifix / Cam locks: For assembling internal dividing walls within the bed box. They require precise drilling (usually 15 mm for the cam casing, 5 mm for the bolt) and are ideally suited for System 32 manufacturing. Suitable options can be found under carcase connectors.

Which Fitting for Which Scenario? (Decision Guide)

Selection depends strictly on the dimensions and materials of your project.

• If you are building a solid double bed (180x200 cm) with a continuous slatted base:

Always choose heavy-duty mechanisms. The combined weight of the base and mattress easily reaches 50 kg - 70 kg here. You will need gas struts with at least 1000 N - 1200 N on both sides. Fix the hinges using through-bolts or metric threaded inserts into the frame. Standard chipboard screws will tear out under the leverage force.

• If you are constructing a single youth bed (90x200 cm) from MDF or chipboard:

Struts with 350 N - 500 N are sufficient here. For the frame's corner joints, use heavy-duty connectors & brackets, ideally dedicated bed corner brackets anchored into the board with Euro screws (5 mm drilling diameter).

• If the storage box features modular internal compartments:

Use cam connectors for the dividing panels. These allow for a flush assembly that will not snag or obstruct bedding when stored inside the compartment.

Installation Notes & Checklist

Setting up an ottoman bed is like cocking a crossbow – the geometry of the pivot points must be calculated precisely so that the immense force of the struts remains balanced when closed and releases smoothly upon opening.

Required Tools

• Cordless drill/driver with precise torque control
• Forstner bit (typically 15 mm for cam casings)
• Wood drill bits (3 mm for pilot holes, 5 mm for Euro screws, 8 mm for wood dowels)
• Tape measure, engineer's square, and vernier calliper
• Open-ended spanner for strut ball joints

Installation Steps for the Lift Mechanism

1. Mark pivot points: The position of the main hinge determines the opening angle. Mount the hinge so that the slatted base sits flat when closed and does not rub against the headboard or footboard when raised (allow a 3 mm - 5 mm clearance gap).
2. Pre-drill: Drill pilot holes for all fitting fixing points. For hardwoods (oak, beech), drill to the core diameter of the screw; for chipboard, drill one millimetre smaller.
3. Attach hinges: Mount the bare metal mechanisms (without the gas struts attached yet) to the bed sides and the slatted frame.
4. Fit the struts: Always install the gas strut while the bed is in the fully open position. Important: The thick cylinder must point upwards and the thinner piston rod downwards when the bed is closed. This orientation ensures proper end-position damping via the internal oil. Push the ball sockets onto the ball studs of the mechanism and secure them with the retaining clips.

FAQ – Frequently Asked Questions on Storage Bed Construction

How do I calculate the required force for bed gas struts? As a rule of thumb: weigh the slatted base including the mattress. Multiply the weight in kilograms by 10 to obtain the approximate value in Newtons. Divide this figure by two (for the left and right sides) and add a 10% to 20% margin. Example: 40 kg total weight = 400 N. Divided by 2 = 200 N. Adding the margin, select struts rated at 250 N per side.

What screws should I use to secure the lift mechanism? Avoid countersunk screws, as they can deform the mounting hole of the metal bracket. Use pan-head or wafer-head screws. For heavy loads, secure the mechanism using metric screws (M6) threaded into threaded metal inserts previously installed into the timber.

Can I retrofit gas struts onto an existing bed? Yes, this is entirely possible. You will require a complete retrofit kit consisting of side metal lift brackets and matching struts. Ensure the bed frame is robust enough (at least 22 mm material thickness for engineered boards) to securely support the side flap stays.

How high should metal bed legs be? For optimal mattress ventilation and robot vacuum access, legs with a height of 15 cm or 20 cm are recommended. Ensure a sufficiently dimensioned mounting plate (at least 60 mm x 60 mm) at the top of the leg to prevent tear-out under lateral loads.

Why can't I compress my newly installed gas strut? Struts rated at 500 N or higher can rarely be compressed by hand. This is not a defect. The struts must first be installed into the mechanism. The leverage provided by the assembled slatted frame is what enables the structure to close.

Suitable Hardware for Your Project

To put these technical specifications into practice, explore our specialised categories for precisely dimensioned storage bed components:

• For robust construction of the outer frame and internal compartments, browse our range of furniture connectors.
• If you are building a double bed with a heavy mattress, discover our high-capacity gas struts for heavy flaps.
• Specialist corner brackets and mounting plates for frame corners and bed feet can be found under connectors & brackets.