I made a Gear Mechanism that changes Torque/Speed depending on which axel is spin

This is a educational design, meant to example of how torque can be increased, using bevel gears to have the same plane.

I recommend that you print the rods separately, as it helps in quality

Use supports for the base.

I will provide the G-code for all gears, and shafts(print one at a time)

But for the base, use a brim, and supports.

I have changed form circular axel, to square.

I have tested the new axel, and make sure your bed is leveled, ideally use a brim for rods, or use a very low speed initial layer, I use that to print very small stuff, and it comes out good.