I´m sure others have figured this solution out but nobody posted
it here but i wanted to share it.
I got tired of the blends nespresso offers and gave it a go to try to refill them with other blends,
and well yes im a cheap bastard also since they do cost much x capsule.
I tend to use the capsules 2 or 3 times since they poke new holes in the back but most times i seem to manage put it in so it uses the same holes again without even trying to do that.
Step 1: Preparation
Take the capsule and carve off the metallic film following the inner ring and then empty and rinse it.