Wooden Keyboard Wrist Rest

GMMK 3 Bottom Cases

GMMK 3 Bottom Cases

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Swappable cases let you effortlessly redesign your GMMK 3's look, so you never have to settle for a single style.

Note: Wireless GMMK 3 keyboards are only compatible with metal bottom cases.

  • Shipping truck icon Free Shipping on Contiguous US Orders $99.99+
  • Shield logo One Year Warranty
  • Black return arrow logo 45 Day Returns
  • Metal: CNC-machined Aluminum
  • Plastic: Injection-molded ABS
  • All Metal Colors (Excl. Matte White): Anodized Finish
  • Matte White: Electrophoresis Finish
  • Comes Fully Assembled with USB-C Daughterboard
  • Wireless Battery Not Included
  • 1 × GMMK 3 Bottom Case Assembly
  • 1 × Set of Case Feet
  • 1 × Set of Case Screws

Find everything you need to get the most out of your wrist rest.

Self-Service Support

Premium Quality

Elevate your build with metal or plastic cases, each crafted from durable materials and precision-machined for a flawless fit and finish you can see and feel.

Swapping Made Simple

Replacing your GMMK 3's existing bottom case is easy and intuitive using the screwdriver included with your keyboard (Phillips #00).

Mix & Match Freely

Plastic and metal top and bottom cases are compatible, giving you the freedom to create your ideal case combination. Note: Plastic bottom cases are only compatible with wired boards.

Bottom Case Compatibility

Metal

All metal bottom cases are compatible with both wired and wireless GMMK 3 keyboards.

Shop Limited Edition Metal Bottom Cases

Plastic (Wired Only)

Plastic bottom cases do not have a cutout for a wireless battery, making them only compatible with wired GMMK 3 models.

Pair with a Top Case

Create your ideal configuration by choosing a matching top case to complete the look.

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Complete the Look

You Design It, We Build It

With over 1 billion possible combinations, you can design the keyboard of your dreams, and Boardsmith brings it to life. It’s hand-built in Dallas, and ready to use right out of the box. From typing experience to performance and aesthetics, you’re in the driver’s seat—without lifting a finger.
Start Designing

Overall rating: 4.625 / 5 from 8 reviews.

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Review highlights

Reviews

Heavy and well made. Super

"Heavy and well made. Super happy with my purchase."

— Alejandro O. (5/5)

Customer Service was amazing!

"We had a keyboard break and reached out to customer service for help. They were absolutely amazing! They quickly helped us identify the exact part we needed to fix the problem and even sent us a detailed step-by-step guide for the repair. Their support made the whole process easy, and we really appreciated their knowledge and excellent customer service. Highly recommend!"

— Sonya S. (5/5)

Vivid color case

"Despite it being the bottom case, the brilliant color is noticeable from the sides and I love it. I picked the metal material and light blue color, which goes well with other parts of my keyboard like my keycaps and coiled cable, both made by Glorious. On a separate note, my top case is also metal so it all shines well together. No scratches or dings in the past year. The metal adds to the heftiness of the entire build, which is what I wanted."

— Husein (5/5)

This thing is Solid Kryptonite

"This thing is Solid Kryptonite"

— Brayden M. (5/5)

Great service

"Great service"

— Daniel M. (5/5)

Makes for a SOLID base

"Purchased this to replace the plastic bottom case on the Boardsmith GMMK 3 HE I ordered with only the aluminum top case. After holding the keyboard in my hands afterward, I should have just ordered it in all aluminum to begin with! This feels HEFTY in a complete aluminum case. I also appreciate the built-in force-break mod the case essentially has by having little donut rings milled at the corners around each screw hole to hold the included O-rings. The only tricky part is plugging the PCB in. The daughterboard cable is really stiff, so it takes patience. The machined channel for the cable is just super precise though, so no worries once you have it in place. Really happy with this purchase and with how my GMMK 3 HE feels after placing it in this case!"

— JCC (5/5)

I ordered a white metal

"I ordered a white metal top case. I was sent a midnight blue top metal case. Makes sense."

— Anthony B. (2/5)

"Beautiful . I love everything about this"

— Laura (5/5)

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