Stag V2 - 3D Printed OTT/TTF Slingshot

锹甲二代 Stag V2 是一款以锹甲虫外形与力量感为灵感设计的 3D 打印弹弓。它像一只蓄势待发的锹甲，将昆虫甲壳的坚硬感、生物造型的张力，以及手工器械的实用结构结合在一起，因此取名为“锹甲”。作为初代锹甲的改进版本，二代保留了原有的仿生造型与结构设计，并进一步优化了握柄的人体工学曲线，带来更加舒适、自然的握持体验。

该弹弓采用 25 mm 宽大的撑头设计，能够适配绝大部分常见皮筋。中央 U 形大开口提供了良好的弹丸兼容性，可用于泥丸、鱼镖以及较大尺寸石子的使用场景。两侧叉头采用侧向嵌入螺母的结构设计，适配 M5 螺母，在增强固定强度的同时，也让整体造型呈现出厚实、稳定的几何块面感。

撑头同时支持 OTT 过顶式 与 TTF 穿叉式 两种绑法。过顶绑法可使用扎带或琥珀带固定皮筋，也可搭配打印夹片使用；穿叉绑法则需要配合对应夹片。

相比初代，锹甲二代最主要的改进集中在虎口推握区域。 新版本重新调整了虎口支撑位置的曲面与握柄之间的过渡，使其更加顺滑、圆润，也更加贴合手部的自然轮廓。优化后的握柄能够更舒适地承托虎口，减少局部突兀的接触感，使整体推握姿态更加自然，进一步改善了握持舒适度与支撑感。

握柄整体延续了锹甲甲壳般的圆润隆起与流线型收束，在机械感与生物感之间形成平衡。下方把手保留了初代饱满厚实的造型，能够充分填满手心，为虎口推握提供扎实的手掌支撑。

整体而言，**锹甲二代 Stag V2** 在保留初代仿生风格与功能设计的基础上，更加注重人体工学与握持体验。它既是一款兼具实用性与雕塑感的 3D 打印弹弓，也是一件融合昆虫仿生设计与人体工学理念的个性化作品。

Stag V2 is a 3D-printed slingshot inspired by the shape and powerful presence of a stag beetle. Like a stag beetle ready to strike, it combines the hardness of an insect shell, the tension of biomorphic design, and the practical structure of a handmade tool. As the second generation of the original Stag, V2 retains its distinctive biomimetic appearance and functional design while introducing improved ergonomic contours for a more comfortable and natural grip.

This slingshot features 25 mm wide fork tips, making it compatible with most common slingshot bands. The large central U-shaped opening provides excellent projectile compatibility, making it suitable for clay balls, fishing darts, and larger stones. Both fork arms use a side-inserted nut structure designed for M5 nuts, improving fastening strength while giving the overall form a thick, stable, and geometric appearance.

The fork tips support both OTT / Over-the-Top and TTF / Through-the-Forks band setups. For the OTT setup, the bands can be secured with zip ties or amber bands, or used together with printed clamps. The TTF setup requires the corresponding printed clamps.

The main improvement in Stag V2 is the redesigned thumb-web support area. The curves around the push-grip contact area have been refined to create smoother, more rounded transitions between the upper grip and the handle. These changes allow the grip to follow the natural contours of the hand more closely, reducing uncomfortable pressure points and providing a more natural, comfortable, and supportive push-grip experience.

The handle retains its shell-like rounded contours and flowing design language, maintaining the balance between mechanical structure and organic form. The lower handle also preserves the full, solid shape of the original Stag, filling the palm comfortably and providing firm support during a push-grip hold.

Overall, Stag V2 builds upon the original design by placing greater emphasis on ergonomics and comfort without sacrificing its distinctive biomimetic character. It is both a practical 3D-printed slingshot and a personalized design that brings together insect-inspired aesthetics, functional structure, and ergonomic refinement.