Worth a watch for anyone who collects error Pokemon cards. I’ve actually been wondering about this for a while and also counting crimp bumps on cards that “seemed” more than likely real. Lots of good info in this video:
Very unfortunate they can also be faked while still in the clear cellophane promo packs. 
Lot of good info here. Unfortunate that people want to ruin some good fun, but where theres a premium there will be people trying to game the system. Thanks for sharing. 
Interesting video.
I always wondered about this, I have lazily collected sealed crimps assuming it would be much harder to fake but now ill be more cautious.
Thanks for posting.
I suspect they are using these for resealed or fake packs also. I’m curious if packs require heat or if the gear is sufficient.
Doing this at scale is much more accessible than many would like to think