Guild Wars 2

A critical success in crafting can either grant an experience bonus or refund some of the materials used but does not add to the value or stats of the item crafted.

Q: Does this involve crafting exotics and such? If you get a crafting critical success on them will it refund like some of the lodestone’s and such?

I’ve reached master crafter and not once did I receive materials back in a critical success. As far as I’ve experienced, all you get is extra xp when you get a critical success. I’m not sure if the wiki’s right on that one, but then again my luck could just have been terrible :P

If it actually is possible to be refunded some of the items when crafting, I see no reason why exotics would be excluded.