Mode Designs: Makers of Mechanical Keyboards

Envoy Foam Kit: How to Layer It with Other Dampening Materials

Envoy Foam Kit: How to Layer It with Other Dampening Materials

By Modedesigns | Published: 2026-08-03

Category: How-to Guides

Learn how to layer the Envoy Foam Kit with other dampening materials to achieve the perfect sound profile for your custom keyboard build.

When building a custom keyboard, the sound and feel are just as important as the aesthetics. The envoy-foam-kit-320340">Envoy Foam Kit is a popular choice for dampening unwanted noise and adding a satisfying thock to your typing experience. But did you know that layering it with other dampening materials can take your build to the next level?

In this guide, we'll explore how to combine the Envoy Foam Kit with other materials like case foam, plate foam, and even tape mods to fine-tune your keyboard's acoustics. Whether you're a beginner or a seasoned enthusiast, these tips will help you achieve the perfect sound profile.

Understanding the Envoy Foam Kit

The Envoy Foam Kit is designed to fit the Envoy keyboard case, providing a layer of sound dampening between the PCB and the case. It typically includes pieces for the bottom case, and sometimes the plate area, depending on the kit. The foam is made from a soft, porous material that absorbs vibrations and reduces hollow sounds.

Before layering, it's essential to understand that the Envoy Foam Kit is just one part of the equation. By combining it with other materials, you can control the balance between sound absorption and resonance. This allows you to customize the acoustics to your preference, whether you prefer a deep thock or a quieter, more muted sound.

  • The Envoy Foam Kit is specifically cut for the Envoy case, ensuring a perfect fit.
  • It is typically placed between the PCB and the case bottom to reduce echo.
  • The foam's density and thickness affect the sound profile significantly.

Materials You Can Layer with the Envoy Foam Kit

Several materials can be layered with the Envoy Foam Kit to enhance sound dampening. Common options include case foam (like the Eighty Poron Base), plate foam, and even simple materials like masking tape or shelf liner. Each material has its own properties, and layering them allows you to target specific frequencies.

Eighty Poron Base
Eighty Poron Base

For example, Poron foam is a high-density urethane foam that provides excellent impact absorption. Layering a Poron base with the Envoy Foam Kit can add a softer, more cushioned feel to the bottom-out, reducing harshness. Similarly, adding a thin layer of shelf liner between the PCB and the plate can help eliminate ping and metallic resonance.

  • Poron foam (e.g., Eighty Poron Base) is great for bottom-out cushioning.
  • Shelf liner or EVA foam can be cut to fit between the plate and PCB.
  • Tape mods (masking tape on the back of the PCB) can add a subtle change in sound.

Step-by-Step: Layering the Envoy Foam Kit

Start by gathering your materials: the Envoy Foam Kit, your chosen additional dampening material (like the Eighty Poron Base), and your keyboard tools. Begin by disassembling your keyboard, removing the keycaps, switches, and PCB from the case. Clean the case interior to ensure good adhesion.

First, place the Envoy Foam Kit into the case bottom. Make sure it sits flat and covers the entire base. Next, if you're using an additional layer like Poron, cut it to fit on top of the foam or between the foam and PCB. The order matters: typically, the denser material goes closer to the PCB for better impact absorption.

After layering, reassemble your keyboard and test the sound. You may need to adjust the thickness or placement to achieve your desired sound. Remember, more layers don't always mean better—too much dampening can make the keyboard feel mushy. Start with one additional layer and experiment.

  • Always test the fit before final assembly to avoid misalignment.
  • Use a thin layer of adhesive or double-sided tape to keep materials in place.
  • Keep the switch openings clear to avoid interference with switch installation.

Tips for Achieving the Perfect Sound

The key to successful layering is balance. If you want a deeper, more resonant sound, consider using a less dense material like the Envoy Foam Kit alone, or pair it with a thin tape mod. For a quieter, more muted sound, add a dense foam layer like Poron.

Also, consider the plate material. The Loop Plate, for example, is a popular choice that can affect the sound profile. Combining the Envoy Foam Kit with a different plate material can change the resonance. Experiment with different combinations to find what suits your typing style and preferences.

  • Try layering the Envoy Foam Kit with a tape mod for a subtle change.
  • Use the Loop Plate for a different sound signature when layering.
  • Record your typing sounds before and after to compare the differences.

Layering the Envoy Foam Kit with other dampening materials is a simple yet effective way to customize your keyboard's sound and feel. By understanding the properties of different materials and following the steps above, you can achieve a professional-grade typing experience. Start with the Envoy Foam Kit and experiment with additional layers to find your perfect setup.

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