Toastal Relief

Project Overview

Toastal Relief is a one-handed, toast-shaped gua sha tool designed to make gua sha self-massage fully accessible to people who don't have a free hand or the mobility to hold a traditional scraper. This concept replaces the two-hand requirement of conventional gua sha with a single anchored surface, allowing the tool to stay fixed in place while the user works with just one hand.

Instead of relying on a second hand to hold the tool steady, I adapted the idea of body-anchored stability to the shape of a gua sha scraper. The goal was to create a functional design that explores how wedging a tool against the body, rather than gripping it, can remove the barrier of needing two functioning hands for routine self-massage. 

Design Focus

The project centers on a dual-use anchoring system engineered to stay stable without a second hand:

• Thigh-Anchor Edge: The board is sized to wedge securely between the thigh and the seat of a chair, with a working edge left exposed. Placement works under either the outer or inner thigh, whichever is more comfortable, letting the user's own body weight hold the tool in place while they scrape or massage.

• Handle-Hole Grip: A hole through the center of the board doubles as a handle, allowing the tool to also be held and used directly when anchoring isn't practical or preferred.

• Toast-Shaped Housing: The outer silhouette is shaped like a slightly mangled, bitten piece of toast, keeping the tool visually approachable and easy to recognize.

The Assembly System

• The Board: The single tactile core of the design. PETG, the board holds the anchoring shape and handle hole with the dimensional stability needed to stay wedged securely and hold up to repeated scraping pressure.

Functional Breakthrough

Shifting gua sha from a two-hand technique to a one-hand, body-anchored one was the turning point for this project. Using the thigh and chair as a natural clamp, paired with a handle hole as a backup grip, creates a tool that works whether the user wants hands-free anchoring or direct hold, without sacrificing the scraping motion gua sha depends on.

Reflection & Tools

• Key Lesson: Designing for one-handed use means rethinking where stability comes from. Shifting the anchoring role from a second hand to the user's own seated body weight solved the primary challenge of hands-free operation without adding any moving parts.

• CAD: [Plasticity] | 3D Printing: [Prusa] 

Disclaimer & Safety

• Not a Medical Device: Toastal Relief is an experimental prototype, shared as-is. It has NOT been evaluated, approved, or endorsed by any medical or regulatory body (such as Health Canada or the FDA), and no claims are made about its effectiveness, safety, or suitability for any particular use.

• Hygiene: as with any 3D printed object, the layer lines in the surface can harbor bacteria if not cleaned properly after use, especially on a tool that contacts skin. Clean it thoroughly after each use, and stop using it if the surface becomes damaged or difficult to clean. Use at your own risk.

• Stop If Issues Arise: if using this causes any pain, irritation, or other health issues, stop immediately.

• Fit and Stability Vary: whether and how securely this stays in place depends on your own chair, body, and setup. There is no guarantee of fit or performance for any individual.

• Consult a Professional: consult with a medical professional, such as your OT or PT, before using this tool, especially if you're considering it as part of a rehabilitation or accessibility plan.

• User is the Manufacturer: by downloading these files, the user acknowledges they are the manufacturer of the physical object and assumes 100% responsibility for material selection, print settings, fit testing, and safe use. Use is entirely at your own risk.

• For full safety information, disclaimers, and terms of use, visit: www.tryspire3d.com/disclaimer-and-terms-of-use

Evolution of the Design