Plastic vs Aluminium Keyboard Cases: Which Is Better for Your Custom Keyboard Build?

Building a custom mechanical keyboard is one of the easiest ways to level up your desk setup - from sound and feel to pure aesthetic vibes. One of the biggest decisions you’ll make early on is keyboard case material.

If you’re choosing between a plastic keyboard case and an aluminium keyboard case, this guide breaks down everything you need to know — sound, feel, weight, price, and overall setup style - so you can build a keyboard that actually matches your space.

Whether you’re building your first custom mechanical keyboard or refining a premium setup, this comparison will help you choose the right case for your build.

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🧠 Why Keyboard Case Material Matters

Your keyboard case isn’t just cosmetic. It affects:

• Typing sound and acoustics
• Overall weight and desk stability
• Build quality and durability
• Price and upgrade path
• Aesthetic style (minimal, pastel, cyberpunk, cosy)

For custom builds - especially 60% keyboards, 65% keyboards, and 75% layouts - the case material plays a massive role in how your keyboard feels day to day.

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Plastic Keyboard Cases Explained

Pictured: Akko 5075B Plus VIA ISO Mechanical Keyboard

 

What Is a Plastic Keyboard Case?

Plastic cases are typically made from ABS plastic or polycarbonate. They’re widely used in entry-level and mid-range custom keyboards and are perfect for lighter, more flexible builds.

Pros of Plastic Keyboard Cases

✔ Softer typing sound
Plastic absorbs vibrations, producing a muted, thocky sound profile — ideal if you like quieter keyboards.

✔ Lightweight & portable
Great for smaller desks, laptop pairings, or moving between work and gaming setups.

✔ Budget-friendly
Perfect for first-time builders or experimenting with switches and keycaps without committing to premium prices.

✔ Flexible typing feel
Slight case flex can make longer typing sessions feel more comfortable.

Cons of Plastic Keyboard Cases

✖ Less premium feel
Compared to aluminium, plastic cases can feel less solid.

✖ Lower durability
More prone to scratches and wear over time.

✖ Fewer high-end finishes
Limited anodised or metal-style textures.

Best For:

• First custom keyboard builds
• Budget mechanical keyboards
• Quiet office setups
• Pastel, cosy, or minimalist desk aesthetics

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Aluminium Keyboard Cases Explained

Pictured: AKKO MOD 007S v2 DIY Kit

 

What Is an Aluminium Keyboard Case?

Aluminium keyboard cases are CNC-milled metal cases designed for premium custom mechanical keyboards. They’re heavier, sturdier, and offer a more refined build experience.

Pros of Aluminium Keyboard Cases

✔ Solid, premium build quality
Heavy and rigid — your keyboard won’t move during intense gaming or typing.

✔ Crisp, clean sound
Produces a sharper, more defined sound profile, especially when paired with foam mods.

✔ High-end aesthetic
Anodised finishes, clean edges, and modern colours elevate any desk setup.

✔ Long-term durability
Resistant to wear, warping, and cracking.

Cons of Aluminium Keyboard Cases

✖ Higher price point
Aluminium cases are a bigger investment.

✖ Louder acoustics without tuning
Can sound hollow or pingy without proper dampening.

✖ Heavier weight
Not ideal if you move your keyboard often.

Best For:

• Premium custom keyboard builds
• Enthusiasts chasing sound perfection
• Gaming setups that need stability
• Minimal, industrial, or cyberpunk desks

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Plastic vs Aluminium Keyboard Case: Quick Comparison

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Which Keyboard Case Should You Choose?

Choose a plastic keyboard case if you want:

• A budget-friendly custom keyboard
• A quieter typing experience
• A lightweight, cosy setup
• Your first mechanical keyboard build

Choose an aluminium keyboard case if you want:

• A premium feel and finish
• A stable keyboard for gaming
• Long-term durability
• A high-end desk aesthetic

There’s no “better” option - only what fits your setup goals.

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Pro Tip: Case Material + Mods Matter More Than You Think

Your keyboard case works best when paired with:

• Foam mods (case foam, PE foam)
• Quality switches
• PBT keycaps
• Proper plate material

A well-tuned plastic case can sound incredible - and a poorly tuned aluminium case can sound awful. Build smart, not just expensive.

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Final Thoughts

Choosing between a plastic vs aluminium keyboard case comes down to sound preference, budget, and setup vibes. Both materials can deliver an amazing custom mechanical keyboard experience when built properly.

If you’re building a keyboard that feels as good as it looks - and fits your desk aesthetic - the case material is the foundation.

For UK-designed desk accessories, keycaps, and setup upgrades, shopgalactica focuses on aesthetics, performance, and clean desk vibes - built for both gaming and everyday setups.