Oh crafting is by no means the worst of the RNG game. Over-melding is the worst.

45% success rate and 7 fails in a row?
24% success rate and over 20 fails in a row?
I've had both.

Over-melding is the biggest pain in this game. Especially when your progression absolutely requires over-melding. You either suck it up and keep counting your fails while having absolutely no way to help the chance, or you give up on progressing any further on crafting (and gathering, for that matter).

Thank the Twelve this problem is getting addressed with token gear for crafters and gatherers in Heavensward.