I appreciate your reply but respectfully, I think you missed my point. I know how to craft runes but there is a limited and finite amount of those materials available in the game unlike all other crafting materials which replenish themselves. Once you have closed all the fade rifts you can no longer get them anymore. Bioware is continuing to release DLC which includes new weapon schematics but for all the people who have completed the game and closed the rifts, there is no way to get more of these materials to make more runes.
I understand that people have discovered an "exploit" that allows you to close a rift, not loot everything, leave the zone and come back for more loot but most people would not have known to do that as rifts are meant to be closed and looted.
So if I've completed the main game and closed and looted all rifts I'm forever out of luck and will never be able to craft new runes for any new schematics from any current or future DLC which doesn't make sense since all other crafting materials can respawn and be harvested again.