I've got plenty of the coppers and silvers but not nearly enough time to craft the platinums. 1 per 2 hours is ridiculous. I can't play every single hour of the day.
But thanks for your kind help anyway. It looks like I will get the Gold Pheasant dragon with only a couple of hours to spare, so no time to send it on quests. At least I'll get the extra 750 parts.