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Custom Koi Resin Keycap

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The legend of Koi Fish

Legend has it that once in a distant mountain, there was a magnificent waterfall dropping from a towering cliff. Imposingly standing on a mountain peak is a gate to heaven.

Custom 1u keycap
Mechanical keyboard artisan keycaps

Swimming upstream against the torrent is an impossible mission that no fish can complete. After a long time of waiting, a marvelous, unexpected thing is witnessed: a strong Koi fish surged forward, surpassed the torrent, passed through the gates, and became a dragon.

After the victory, because of the one successful and precious carp and its ability to swim upstream, the Koi fish now represents courage, luck, victory, great and benevolent, magical power. It is also a symbol of fortune, luck, and success.

Artisan spacebar keycaps
Custom artisan spacebar keycap made for mechanical board | hirosart

Our Koi resin keycap comes in a variety of colors with sizes from 1U to 6.25U. Each Koi keycap will have its own unique and distinct fluid effect, so the only common thing they share is the color option. No single keycap will bear a similar look to any other ones with their signature color ray imprint.

The process of making a resin keycap is complicated, but we enjoy it….

We produce the Koi fish in these mechanical keyboard artisan keycaps by casting them through shaped molds. We do not have them easily printed in 3D and just like that, the details of the Koi resin keycap come straight out of a machine. Everything is done by the hands of our artisans, preparing the molds, pouring resin, and coloring the details.

Custom spacebar keycap
Custom spacebar made for mechanical board | hirosart

Ultimately, this painting step is hands down one of the hardest things we faced during the production of Hirosart. Molds in the collection are very small, so it’s very challenging to paint the details and keep them spirited as much as possible. We had to apply 3 - 5 layers of paint for each keycap so the colors can have a certain thickness and be clearer to our eyes. We hope you can wait patiently to receive our keycaps!

Made from durable resin hand-painted in eye-popping colors by our artisans, each little toad is painted by hand to ensure it lives up to our high standards. This will obviously add some more inspiration to your work corner and keep you more creative to do what you love and love what you do.

Tech specs:

    • Material: Resin
    • Size: 1U; 1.25U; 1.5U; 1.75U; 2U; 2.25U; 6.25U
    • Profile: SA & OEM
    • Colors: We can custom any color you want
    • Compatible with Cherry MX switches
    • Designed and hand-painted by Hirosart

Inside the package:

      • 1 Koi resin keycap by Hirosart
      • 1 card
      • 2 rubber finger gloves


    • Every product was 100% handmade. The final product may differ slightly from the original photos. We would love to ask you to tolerate any reasonable differences.
    • For a long time use, please keep this product away from heat and water. Don’t soak it into the water. Wet tissue is acceptable.

All items are made-to-order. This means that when you place your order, we make that item just for you, one at a time, for the best quality!

We process orders on business days, which are Monday through Friday, Eastern Standard-Times. We exclude holidays observed by the Post Office: New Year’s Day, Presidents’ Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas.

The time frame for order delivery is divided into two parts:

Processing time:

Orders will be shipped from Vietnam

The majority of orders are produced and shipped within 7-10 business days.

With custom orders such as: Pokemon keycaps, custom wrist rest… the processing time is 3 – 4 weeks.

Shipping time:

🇺🇸 United States:

Economy: 8 -15 business days

🇨🇦 Canada:

Economy: 12 - 20 business days.

🇬🇧 United Kingdom:

Economy: 10 - 15 business days.

🇦🇺 Australia & New Zealand:

Economy: 15 - 20 business days.

🇪🇺 European Countries:

Economy: 10 - 15 business days.

Other Countries: 

Economy: 15 - 20 business days.

To determine your spacebar size, you need to measure the length of the spacebar keycap in millimeters and divide it by 19. This will give you the unit size of your spacebar. For example, if your spacebar is 114 mm long, then your spacebar size is 114/19 = 6u. Our spacebar size ranges from 5.57u to 7u, so you can choose the one that fits your keyboard best.
Our keycaps are compatible with Cherry MX switches & clones in terms of switch types and SA/OEM in terms of keycap profile. These are the most common and popular types of switches and profiles in the mechanical keyboard market. However, some keyboards may have different layouts or sizes that may not match our keycaps. To provide you with better support, kindly email us with your keyboard model and we will check the compatibility for you.
A "keybcap profile" typically refers to the physical shape or design of a keyboard, particularly the arrangement and height of the keys. Different keyboard profiles can affect the typing experience and ergonomics, with common profiles including flat, low-profile, and sculpted designs. Additionally, in the context of mechanical keyboards, "keyboard profile" may also refer to the shape of the keycaps, such as OEM, Cherry, DSA, SA, or other profiles, each offering different keycap heights and shapes.
For custom orders such as Pokémon keycaps, custom nightlights or wrist rests, the processing time extends to 3 to 4 weeks.

Reviews 1

  1. Marie

    The keycap is absolutely perfect! I also specifically asked for the orange on the left and the blue on the right and the seller created it perfectly!

    Custom Koi Resin Keycap
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