Been helping a few fellow members out with this tip so thought I would share with the rest of my brothers and sisters.
The biggest reason why snaps fail is the fact that some snap tools won't flare the post out enough and you only roll the post over.
You will need a Philips head screwdriver, once your snap is together place the tip of the screwdriver on top of the post then hit with a hammer.
You can now see the post has been spl