If I shut down the store to do so after each customer then yes.
no I mean, first you will have a bit of a hassle, but as soon as you have enough to prepare blades for each type (3 each) you should be good to go. I managed to get all mithril, 6 of each type, in 2 RL days, 30+ ingame days :)
So at day 15 I think I already was prepared with some copper weapons so I could just throw them when the customer told me what he wants, and during the next spawn, I re-assembled the weapon I just handed out out of raw materials (blade, grip, guard) I had lying around already