Create Your Personalized Edge
Create Your Personalized Edge
Upload a photo of your hand to generate a custom-fit climbing edge.
How it works
- Place a credit-card-sized card on a horizontal surface (do not show any sensitive information).
- Place a single hand flat near the card, without touching it.
- Keep fingers close, with a small gap between the fingertips, palm facing up.
- Make sure all 4 fingers are flat — all joints and tips in contact with the surface.
- Hold the phone roughly 1 m above the hand, parallel to the surface, centered on the hand.
- Use a flash. If you don't see the creases in the photo, the software won't either.
✓ Good — phone above, parallel to the surface
✗ Bad — too close, angled shot
Tips for a good photo ▸
- Use your phone's highest-resolution camera (12 MP+).
- Avoid notched or irregularly shaped cards.
- Exact distance is not critical, focus on keeping the phone parallel and centered.
- Prefer optical zoom — avoid digital zoom.
A fully automated pipeline that generates a custom 3D-printed climbing edge from a single hand photo. Computer vision software measures your hand and a unique geometry is generated for you.
Since hand morphology varies significantly between climbers, a standard edge puts every user's fingers in a different position, often into hyperextension or causing uneven joint loading. This custom edge puts every finger in the same position.
- Consistent joint angles: comfortable, healthy joint positioning across all morphologies.
- Secure grip: the geometry keeps fingers in place without chalk while form is maintained.
- Longer sets: the comfortable geometry and the grip let you hold 30s+ sets, bringing finger training into the time-under-tension ranges used in tendon rehab and hypertrophy protocols, compared to the 6–10s a standard edge allows.
- Targeted recruitment: open-hand or crimp-specific training (FDP or FDS muscles respectively), with effective pinky engagement.
- Warmup: the fit keeps a cold-to-max ramp comfortable each session.
Mainly recruits the Flexor Digitorum Profundus (FDP), the muscle that flexes the fingertip joint (DIP). It does so while keeping pulleys within a safe range, which makes it a good choice for rehab, prehab, and long sets. In climbing, the FDP engages whenever you're in an open-hand position, digging into a small hold, or otherwise flexing the fingertip.
Recruits the Flexor Digitorum Superficialis (FDS), the muscle that flexes the middle finger joint (PIP). This puts the fingers in a strong position, so the Crimp model holds more load. A single symmetric part works on either hand. In climbing, crimping emphasizes the FDS, particularly in a full crimp.
Open Hand Position
A different position may allow heavier weight but increases injury risk.
Crimp Position
Training Protocol
- Volume: 3 sets of 30–240 seconds.
- Onboarding: Start slowly without reaching failure.
- Chalk: Do not use — slipping means you can't maintain proper form.
Open Hand Troubleshooting
- Crimp Compensation: Reduce intensity and focus on form.
- Pinky Curling: Try moving the pinky laterally along the edge. The curl may actually be due to the ring finger crimping (weak FDP), effectively bringing the pinky hold up.
Crimp (FDS) — up to your bodyweight recommended load
- Infill: 100%
- Material: PETG or PLA
- Orientation: Default
- Support: Auto · manual for stability
Show example
Manual supports (green) added under the trainer for stability on the bed.
Open Hand (FDP) — up to 60 kg recommended load
Lower due to the weaker recruited muscle.
- Wall thickness: 1.7 mm
- Infill: 20%
- Material: PETG or PLA
- Orientation: Flat or default
- Support (Flat): None
- Support (Default): Auto
Flat is easier to print and has too much friction, while default is more comfortable and better overall.
Cord
- Rig with accessory cord at the diameter you entered: thread it through the trainer and close the loop with a fisherman's knot or a figure-eight loop.
Safety
- Material: PETG is generally preferred over PLA for engineering use. It has a longer shelf life and holds up better in humid environments, though either will make a functioning part.
- Open Hand model: heavily over-engineered — failure is extremely unlikely.
- Crimp model: dimensioned for a 5× safety factor over your bodyweight and set at a strengthening angle to account for variations in print quality and degradation over time. Warning: Lowering the infill below 100% for Crimp model leads to unpredictable strength. This model depends heavily on wall thickness, which slicers handle inconsistently in tight corners.