Finger extensor exerciser

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This simple finger extensor muscle exerciser may be exactly what rock climbers need to achieve better balance between their extensor and flexor muscles - numerous claims suggest that such equilibrium can actually help prevent tendonitis. To assemble, print the top and bottom layers, then join them at the prominent central circle by gluing (or screwing) together. Using ABS as the printing material and ABS juice for gluing proved to be a winning combination. Subsequently, you can place a rubber band between the pairs of posts simply by bending the exerciser slightly - this might require some effort. You may need to loop the rubber band several times to achieve the perfect tension, and it's possible that adding an extra rubber band for your thumb will be necessary. Adjusting the tension between fingers as needed is crucial. It's worth noting that you can easily modify the dimensions of this exerciser to fit your hand perfectly. Remember, this device is not a medical tool - under no circumstances should it be used for therapeutic purposes without first consulting a qualified doctor or licensed therapist.