How to consistently fall through a platform

[sjb.dario]

Really dumb question here.

Despite having a good amount of time put into smash 4, I am still really confused on how to fall through a platform consistently. Obviously, I know that you have to press down on a platform to fall through. But sometimes, whenever I hold down, I sometimes crouch and other times I fall through.

Also, I seem to have more trouble falling through the platform while I'm walking on it.

Because of this inconsistency, I usually end up running off the platform to go below it. But I really want to know:

How do I consistently fall through a platform?

 

[MarioManTAW]

You need to tap down to go through. You're probably just not pushing down hard enough or fast enough.

 

[Crystanium]

You know, I actually don't think about how to go through a platform, yet I do it. As MarioManTAW has said, press down. Practice if you need to.