About this 3D model
https://youtu.be/wMkb9hvUgqY Be careful before printing this race car know that this one is extremely fast.So make sure you can control this beast of race in any circumstance. I printed the car with PLA but for the axles if you have a stronger material it will be better.The screws and the axles have to be printed with a resolution of 100%.If the parts don't fit together, your best friend will be the sand paper.If you have some problem let me know in comment, maybe I can help.