This project is fully customizable! You can make it fit perfectly to your fingers or make it smaller to play with your kids :) Here's quick tutorial on changing parameters.

First, take a “comfortable riding position” with your fingers, don't stretch them too far as it can get a little uncomfortable while riding. Paste that dimension as a “finger_dist” parameter in fusion 360.

Second step is measuring diameter of your fingers. It's better to take a dimension of your wider finger. Then paste that into “finger” parameter in fusion 360.

You can also change rest of the parameters if needed:

• "board" - length of both sides of your board
• “lift” - It determines length and sublime of board lips as well as cups for your fingers, so be carefull with that
• “width” - width of your board

sometimes fusion 360 have problems with changing parameters, if you have this problem change “finger_dist” to lower value and then change it back to final value.