Office Chair Armrest Modification

Office chair armrest modification can be achieved through methods such as repair and modification, raising, and adjustment. The specific methods are as follows:

Repair and Modification of the Armrest Surface of an Office Swivel Chair

If the armrest surface of an office swivel chair is damaged, it can be repaired and modified. Tools and materials required include rosewood offcuts, a coping saw (or hand saw), a hand plane, sandpaper, a screwdriver, a utility knife, a pencil, wood wax oil (or paint), wood glue, etc. Production steps are as follows:

• Disassemble the armrest: Remove the armrest surface from the chair armrest carefully to avoid damaging the armrest surface support plate.
• Draw the model: Find a thick piece of cardboard. Place the old armrest surface (support plate) horizontally and vertically on the cardboard. Use a pencil to draw the thickness outline, and then use a utility knife to cut out the outline pattern. Place the patterned cardboard on small square pieces of wood and use a pencil to draw the outline on each small square piece.
• Assemble the armrest board: Use a coping saw (or hand saw) to cut out the wood along the outline. Place the two sets of cut wood in the designed order sideways on a woodworking table. Apply glue on the sides. After applying the wood glue, clamp it tightly with woodworking clamps. After 24 hours when the glue is dry, remove the clamps.
• Create the shape: Flatten the back of the assembled armrest surface with a small hand plane. If the bottom is concave, smooth it with coarse sandpaper. Place the old armrest surface (support plate) on the assembled wooden panel, use a pencil to draw the size outline, and then use a coping saw to cut out the shape of the armrest surface.

Modification of a Computer Chair with Low Armrests

Taking the Lianfeng W - 158B as an example, if the armrests are too low, you can pick up a few wooden blocks to raise the armrests. First, determine the hole positions. Use a small drill bit to drill a small hole first, and also drill holes in the chair handles. Then switch to a large drill bit to drill, sand the hole positions, and then screw in the screws. Install them on both sides.

Principles for Adjusting Office Chair Armrests

• Height: The tip of the elbow should be level with the armrest. First, adjust the seat height to ensure that both feet are flat on the ground, the knees are bent at a 90 - degree angle, sit up straight so that the upper arms hang down naturally close to the torso, and the elbows are naturally bent at a 90 - degree angle. Measure the vertical distance from the tip of the elbow to the seat surface, which is the standard height of the armrest, usually between 20 - 25 centimeters. If the armrests are non - adjustable and too high, you can place a 3 - 5 - centimeter - thick soft cushion. If they are too low, you can remove them or place a footstool under the seat to assist in leveling.
• Front - back: The forearms should be seamlessly connected to the desktop. After adjusting the armrest height, push the armrests forward and backward until the elbow - bending point is on the same vertical line as the edge of the desktop. At this time, the forearms can naturally rest on the armrests, and the wrists can lie flat on the desktop to operate the mouse and keyboard. If the armrests cannot be adjusted front - back, you can make up for it by adjusting the distance between the seat and the desktop.
• Width: The shoulder width should match the symmetry of the armrests. When the arms hang down naturally, the distance between the two elbows is basically the same as the shoulder width. Adjust the width of the armrests so that the inner sides of the armrests fit closely with the outer sides of the upper arms, with a gap of no more than 2 centimeters. For people with a relatively fat build, the width of the armrests should be 3 centimeters wider than the shoulder width. For those with a thin build, armrests with an inward - folding function can be selected.