Gears Plane

I've recently been learning to use Fashion360 software to create gears. I watched many videos and realized that the center distances of spur gears and helical gears with the same module are actually different. Initially, I made many single sets of gears for testing. Then, I created a modular gear tray for my child to play with, I have tested my screw fasteners and the clearance of gear rotation with A1 series, P1 series, and X1 series printers WITH PLA and PETG , so you can print with confid