WELIGHT Guitars began with a simple assumption. Lighter materials would create a lighter guitar.
In 2015, we built our first aluminum prototype. It was unexpectedly heavy. We then tried stainless steel. The result was nearly identical—around 5kg. That was when we understood: Weight is not defined by material alone.
In 2017, after introducing welding technology, we redesigned the structure itself. The weight dropped dramatically to around 2.2kg.
At the same time, our understanding of aluminum evolved. Initially, we painted it. But we realized aluminum was not something to hide—it was something to express. We transitioned to anodized finishes, allowing the material itself to define both texture and color.
But solving weight revealed a deeper challenge. Sound.
We began experimenting with neck materials. Softer woods provided stability, but lacked clarity. Harder woods improved tone—but introduced new risks. In 2021, a prototype shipped to Europe arrived with a broken neck. In 2022, another arrived twisted due to the natural behavior of wood.
Despite these failures, one fact became undeniable. A stiffer neck produces a stronger, more defined sound. Around this time, we had the opportunity to place our instrument in the hands of a world-class guitarist. His response was simple: "The tone is solid. It's very defined." This confirmed our direction.
In 2023, we turned our focus inside the instrument. We discovered that the aluminum cone and aluminum body were resonating at similar frequencies, causing vibration to disperse throughout the entire structure. Energy was being lost. So we redesigned the internal structure. Not to increase resonance— but to control it.
We also made a counterintuitive decision. We reduced the size of the body. By minimizing internal space, we limited how vibration could disperse, increasing density and forward projection. Less space. More focus.
Finally, in 2025, we re-engineered the neck. By combining laminated bamboo with Richlite, we achieved both rigidity and stability. We also introduced CNC machining for the neck and fingerboard. Not for mass production— but for precision. Every angle, every surface, every contact point is engineered to ensure consistent vibration transfer.
For the first time, we were able to control the flow of vibration across the entire instrument. From the cone, through the body, into the neck.
This is not just a lightweight guitar. It is a system engineered to control sound.
Handcrafted in Kyoto. Played Worldwide.
Custom Order Deposit / カスタムオーダー デポジット
This product is a deposit required to begin production of your custom instrument.
このプロダクトは、カスタム楽器の制作を開始するために必要なデポジット（内金）です。
Applicable Product Name / 対象商品名
SIPLA SERIES / [X] Eternal / Special
Applicable Models / 対象モデル
ET Special / SE, ET Special Cutaway, ET Special Pickup, ET Special Cutaway Pickup
About This Model / このモデルについて
Eternal Limited Edition is derived from the Eternal model and explores a more expressive design direction. While maintaining the balanced body shape and resonator character of Eternal, this version introduces distinctive finishes and color combinations that highlight the visual presence of the instrument. Produced in small numbers, each Limited Edition emphasizes individuality while preserving the lightweight aluminum construction and modern resonator concept of WELIGHT.
Eternal Limited EditionはEternalモデルをベースにした特別仕様のモデルです。基本設計はEternalのバランスを継承しながら、無骨さとは異なる個性的なカラーリングや仕上げを組み合わせることができます。少数生産により個体ごとの個性を楽しめるモデルであり、WELIGHTの軽量アルミ構造と新世代レゾネーターの思想をそのまま表現しています。
Your deposit secures your order and allows us to begin preparing materials and scheduling production.
デポジットのお支払いにより、ご注文が確定し、材料の準備と制作スケジュールの調整を開始します。
The remaining balance will be invoiced and paid before shipping.
残金は出荷前にご請求・お支払いいただきます。
If you cancel before production begins, your deposit will be fully refunded.
制作開始前のキャンセルの場合、デポジットは全額返金されます。
Custom specifications can be adjusted until production starts.
カスタム内容は制作開始までであれば変更可能です。
Custom Order Process / カスタムオーダーの流れ
1 Place your deposit order / デポジットをご注文
2 Confirm your custom specifications / カスタム仕様の確認
3 Production begins / 制作開始
4 Final payment before shipping / 出荷前に残金をお支払い
Learn more about the custom order process / カスタムオーダーの詳細はこちら
Custom Order Process
Important / ご注意
This deposit secures your place in our production schedule.
デポジットにより、制作スケジュールへのご登録が確定されます。