Tristovery - Wrist Rehab & Strength Trainer

After injuring my wrist during an ill‑fated attempt to lift a samurai Benkei spear, I decided it was time to leave that in the past and focus on getting rid of the lingering wrist pain. The result is Tristovery (twist + wrist + recovery), a first‑version prototype designed for safe, controlled wrist rehabilitation and strengthening.

Key Features

• Extended safety zones around the rotating section to help prevent the rope from slipping or wrapping around your wrist.
• Light knurling on the handle to provide a slight increase in friction and a more secure grip.
• Oversized handle design to comfortably accommodate a wide range of hand sizes and thumb over grip.

Models

Tristovery is available in two exercise types, each with a choice of 15 mm or 20 mm handle radius:

• SP-R15 / SP-R20 - for supination/pronation
• FE-R15 / FE-R20 - for flexion/extension

SP - supination/pronation
FE - flexion/extension
R - handle radius in mm

Training & Uses

Tristovery is suitable for a variety of wrist exercises, providing a more constant load through the full range of motion. It can be used for:

• Pronation
• Supination
• Ulnar deviation
• Radial deviation
• Extension
• Flexion

It’s intended both for rehabilitation and general wrist strength training, especially after strain or injury.

Printing Instructions

• The model is split into two parts to eliminate the need for supports.
• After printing, insert the alignment pins and bond the parts with superglue.
• Allow the glue to fully cure before attaching any rope or adding load.

Use at your own risk and start with light resistance, gradually increasing as your wrist becomes stronger and more comfortable.