thank you cyberStep

Hello. You may want to have a look at this topic :
http://onigiri.cyberstep.com/_/forum/viewtopic.php?f=15&t=5328

According to them, you have to complete the "Crafting the Oninodachi" quest at the beginning of the game.

If you previously were able to craft but suddenly are not able to now, you may want to send in a ticket to the GM. Good luck.