One edge per finger, shaped to your hand.
Your fingers are not the same length, so why train on a straight edge? Enter how much longer your ring, middle and index finger are than your pinky, and how wide each finger is. FingerPrint shapes each edge to match, shows you the result in 3D and gives you an STL to print or a STEP file to edit.
All values in mm. Total width: 79 mm
STL to print · STEP to keep editing in CAD
More ergonomic. Fewer injuries. More training.
On a straight edge your longest fingers do most of the work while the others hang along. FingerPrint gives every finger its own edge at its own length, so all four fingers grip the way your hand is built.
Ergonomic grip
Each edge sits exactly where that fingertip lands, so your hand stays in a natural position instead of bending to fit a straight line.
Load spread over every finger
Every finger carries its own share. No single finger has to take the peak load while the others barely touch the edge.
Calluses spread evenly
The skin load is shared too, so calluses don't build up on one finger the way they do on a straight edge.
Spares your A2 pulleys
The A2 finger pulleys aren't loaded in this grip, so you can train hard without worrying about that pulley.
More training volume
Because the grip is ergonomic and less stressful on your fingers, you can train more: more sets, more sessions, less time recovering.
Carries over to real holds
Every finger is trained to its own maximum, which translates much better to three-finger drags and two-finger pocket holds.
Measure your hand in 4 steps
Trace your hand
You only need to measure one hand: the other is usually the same. Lay it flat on a sheet of paper, fingers relaxed and together, as you would hold an edge, and trace around the fingertips with a pencil held vertically.
Measure the lengths
Draw a line through the tip of your pinky, square to your fingers. That line is 0. Measure how far the ring, middle and index fingertips stick out past it, in millimetres.
Measure the widths
Measure each finger across its last joint, where the fingertip is widest, with a ruler held flat over the finger. Do this for all four fingers. If the fingers feel cramped side by side on the edge, add 1–2 mm to each.
Enter your numbers
Type the three length differences and the four widths in the designer above. With the lock closed, both hands get the same values; open it if your hands differ and enter each hand separately. The 3D view updates as you type.
Each length is the distance between the pinky edge and that finger's edge, measured square to the 5° edge face. The original FingerPrint uses 23.9 / 27.9 / 12 mm (ring / middle / index) and edge widths of 20 / 21 / 20 / 18 mm (index / middle / ring / pinky).
Everything except the edge positions and widths: the 17 mm front lip, the 5 mm and 3 mm fillets on every edge, the cord channel, the load hole and the mounting eyelets. If an edge gets too close, the load hole shrinks around its centre.
A printed part can fail without warning. Never hang more than you can control, keep your feet close to the ground the first time, and replace the print as soon as you see layer cracks.