The Crown Grip - Assistive rotating shear grip

See image for print settings

Crown Grip is an ergonomic design concept created for professionals in the hair industry. It is a functional accessory designed to explore alternative hand positioning and grip stability when using traditional shears. By providing additional spacing, it allows for a more open hand position which may improve comfort during extended use.

One common challenge with traditional shears is achieving certain cutting angles that typically require specific wrist or shoulder orientation. Crown Grip features a modular design that allows the thumb position to rotate, enabling a variety of cutting angles with an alternative ergonomic approach.

The goal of this project was to create a versatile design that can be adapted to various shear styles. While it may not be compatible with every model, the design can be scaled up or down in your slicer to improve fit and compatibility.

Components The device consists of three separate functional components:

1. The Crown: Crafted from TPU 95A, the Crown features flexible geometry designed to interface with standard shear finger holes. The spacing allows the material to conform to the shape of the hole while maintaining a secure fit.

2. The Sceptre: Also made from TPU95A, this extension balances flexibility and stiffness for control. The design is customizable, allowing users to modify the opening to suit their personal preferences.

3. The Throne (Optional): This component is printed in PETG to provide structural rigidity. It serves as a support piece to help limit the rotation range of the Crown based on the user's specific technique and force application.

Print Settings:
Rafts: No
Supports: No
Resolution: 0.2 mm
Infill: 30% (Gyroid)
Wall count: 4
Filament material: Crown (TPU95A), Sceptre (PETG), Throne (PETG)

Support and Updates:

This design is a work in progress. If you would like to support future Tryspire projects, consider visiting Ko-fi.

Website: https://www.tryspire3d.com/
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Usage and Licensing These designs are shared for personal, non-commercial research and evaluative purposes only and should not be sold. If you modify the model, please credit the original work.

⚠ LEGAL AND SAFETY NOTICE

• NOT A MEDICAL DEVICE: Crown Grip is an experimental ergonomic prototype. It has NOT been evaluated, approved, or endorsed by any medical or regulatory body (such as Health Canada or the FDA). It is not intended to treat, cure, or manage any medical condition or physical limitation.

• SHARP TOOL HAZARD: This accessory is used with sharp cutting instruments. A failure of a 3D-printed part could lead to a loss of control of the shears, resulting in serious injury. Always inspect the device for cracks or wear before use.

• USER IS THE MANUFACTURER: By downloading this file, you acknowledge that you are the manufacturer of the physical object. You assume 100% responsibility for material selection (e.g., PETG/TPU), print settings, and safety testing. 3D-printed parts are not as strong as molded plastic and can fail without warning.

• TERMS OF USE: Downloading this file constitutes your agreement to the full Tryspire Terms of Use and Disclaimer: https://www.tryspire3d.com/disclaimer-and-terms-of-use