The IKEA Karlby + Alex drawer desk is the most popular DIY gaming desk for good reason: it provides a massive 74-inch walnut or oak surface for well under the cost of comparable gaming desks. The build takes 45-60 minutes, requires zero tools beyond what IKEA includes, and creates a desk that looks premium enough for any setup showcase. This guide covers the complete parts list, assembly, anti-sag prevention, and cable management.
Why the Karlby + Alex Desk Works for Gaming
This desk combination became the most popular DIY gaming desk for several reasons:
- Massive surface area: 74 inches wide by 25.5 inches deep. Fits dual monitors, a full-size keyboard, extended mousepad, speakers, and a PC tower with room to spare
- Premium look: The walnut Karlby has real wood veneer that looks like a high-end solid wood desk. It photographs beautifully for setup showcases
- Built-in storage: Each Alex drawer unit has 5 drawers for controllers, cables, accessories, and office supplies. No separate organizers needed
- Sturdy construction: Combined weight of the countertop (65 lbs) and two Alex units (50 lbs each) creates a 165 lb desk that does not wobble or shake
- Modular: Nothing is screwed together. Rearrange, replace the top, or add a sit-stand frame later without destroying any components
Step-by-Step Assembly (45-60 Minutes)
Step 1: Assemble Both Alex Drawer Units (30 Minutes)
Follow IKEA’s included instructions to build both Alex units. Tips for smooth assembly:
- Do not overtighten screws – particleboard strips easily
- Attach drawer slides before the back panel for easier access
- Check that all drawers slide smoothly before placing the desktop
- Build both units on their side for easier access to screws
Step 2: Position the Alex Units (5 Minutes)
Place both Alex units where your desk will live. The standard positioning puts one flush with each end of the Karlby countertop, creating a 74-inch wide desk with drawer access on both sides.
Alternative layouts:
- Both on one side: Both Alex units on the left, ADILS legs on the right. Gives more legroom on one side
- One Alex + two ADILS legs: One Alex drawer unit on one side, two ADILS legs on the other. More open layout, less storage
- Inset positioning: Move Alex units 6-12 inches inward from the edges for a different aesthetic with countertop overhang
Step 3: Install Center Support (5 Minutes)
For the 74-inch and 98-inch Karlby, add center support to prevent sagging over time. Options:
- ADILS leg (very cheap): Screw into the center-back underside of the Karlby. The cheapest and easiest solution. Place it toward the back where it is hidden
- CAPITA bracket legs (budget-friendly): Shorter, less visible than ADILS. Mount two in the center for distributed support
- Aluminum angle bracket: A 1-inch aluminum L-bracket from a hardware store screwed along the back edge adds rigidity without a visible leg
Why center support matters: The Karlby is particleboard with wood veneer, not solid wood. Under the sustained weight of dual monitors, a PC tower, and peripherals (30-50 lbs total), the center will bow 5-10mm within the first year without support. This worsens over time and eventually becomes visible. A cheap ADILS leg eliminates the problem completely.
Step 4: Place the Karlby Countertop (5 Minutes)
Set the Karlby on top of the Alex units. Place rubber bumper pads on top of each Alex unit before setting down the countertop – these prevent the top from sliding and protect the Alex units’ surface.
The countertop’s weight keeps it securely in place. You do not need to screw, bolt, or glue anything. This modular approach means you can lift the top off for moving, rearranging, or replacing without damaging any component.
Cable Management
Karlby Finish Options
| Finish | Look | Maintenance |
|---|---|---|
| Walnut (mid-range) | Dark, rich brown. Most popular for gaming setups | Oil 2-3x/year or seal with polyurethane |
| Oak (budget-friendly) | Light natural wood. Scandinavian/minimalist | Oil annually or seal |
| Birch (most affordable) | Very light, almost blonde. Budget option | Minimal maintenance needed |
The walnut Karlby is the gaming community favorite because its dark tone contrasts beautifully with white or black peripherals and RGB lighting. It photographs well and hides minor scratches better than lighter finishes.
Maintenance: Keep Your Karlby Looking Great
- Oiling (walnut/oak): Apply butcher block oil or mineral oil every 3-4 months. Wipe a thin coat across the entire surface, wait 30 minutes, wipe off excess. This prevents the wood veneer from drying, cracking, and looking worn
- Alternative: Polyurethane seal: Apply 2-3 coats of water-based polyurethane for permanent protection. Eliminates the need for ongoing oiling. Slightly changes the look (adds subtle sheen) but provides the best scratch and moisture resistance
- Use a desk mat: A large desk mat or mousepad protects the surface under your keyboard and mouse from wear and scratches. This is especially important for the walnut finish which shows scratches more than oak
- Avoid water pooling: Wipe up spilled drinks immediately. The particleboard core swells if water penetrates the veneer, causing permanent damage
Alternatives to the Karlby
If the Karlby is out of stock or you want different options:
| Alternative | Size | Material | Best For |
|---|---|---|---|
| IKEA SALJAN (budget) | 74″ or 98″ | Laminate (no real wood) | Budget alternative, lower maintenance |
| IKEA EKBACKEN (budget) | 74″ or 98″ | Laminate with stone or concrete look | Modern/industrial aesthetic |
| Home Depot butcher block (mid-range) | Various | Solid wood (birch, acacia) | Real solid wood for heavier loads |
| Custom cut lumber yard (varies) | Custom | Solid hardwood | Exact dimensions and wood species you want |
Common Mistakes to Avoid
- Skipping center support: The 74-inch Karlby WILL sag without a center leg or bracket. Add one from day one, not after you notice bowing
- Choosing mismatched colors: White Alex + walnut Karlby is the classic combo. Black Alex + walnut also works. Avoid mixing white Alex with oak Karlby – the tones clash
- Forgetting rubber pads: Without rubber pads between the Karlby and Alex, the countertop slides when you lean on it. Bumper pads are very cheap and prevent this completely
- Placing the PC tower on the Karlby: A heavy gaming PC (20-30 lbs) on the desk adds to the sag load. Place the PC on the floor or on a small stand beside the desk if possible
- Not oiling the walnut finish: The walnut Karlby’s wood veneer dries out and cracks within a year without oiling. Set a quarterly reminder to oil it, or apply polyurethane once and forget about it
Decision Framework
- Budget build: SALJAN countertop + 2 ALEX units + ADILS leg. Laminate surface, less maintenance, slightly less premium look
- Classic build: KARLBY walnut + 2 ALEX units + ADILS leg. The build that most setup photos use
- Premium build: KARLBY walnut + ALEX + SIGNUM cable tray + desk mat + LED bias light. The complete optimized gaming desk setup
- Want sit-stand capability: Skip the Alex units. Buy a sit-stand frame (Flexispot E7) and place the KARLBY on top. Best of both worlds
- Small room: 49-inch KARLBY + one ALEX + two ADILS legs on the other side. Compact but still functional
2026 update: Sit-stand desks have dropped in price enough to be the default recommendation for new setups. Integrated cable management is table stakes.
Frequently Asked Questions
How much does the IKEA Karlby + Alex desk cost?
The total varies by countertop size and finish, but it comes in significantly cheaper than comparable 74-inch gaming desks. The walnut Karlby plus two Alex units plus a center ADILS leg and rubber pads adds up to a budget-friendly complete setup. Check current IKEA prices for your region.
Does the Karlby countertop sag?
The 74-inch and 98-inch can sag without center support. Add a cheap ADILS leg in the center-back to prevent this. The Karlby is particleboard with wood veneer, not solid wood. Center support is essential for heavy setups.
Should I screw the Karlby to the Alex drawers?
No. The 65 lb countertop sits securely through gravity. Use rubber bumper pads to prevent sliding. Not screwing allows easy rearrangement, moving, or swapping components later.
What size Karlby for gaming?
74-inch is the sweet spot for most gamers. Fits dual monitors, keyboard, large mousepad, and PC tower. 98-inch for shared or super-wide setups. 49-inch for small rooms with single monitors.
Do I need to oil the Karlby?
Walnut: oil 2-3x/year with butcher block oil. Oak: oil annually. Or apply polyurethane once for permanent protection. Without maintenance, the walnut veneer dries and cracks within a year.
Sources:
Related Guides
- IKEA Alex Desk Gaming Setup Guide
- Best Gaming Desk
- Standing vs Sitting Desk for Gaming
- Best Budget Gaming Desk
