I just got done with my oven build and shot a couple things for a friend. The small parts I did in my toaster oven and the big parts in the new oven. The toaster oven parts came out nice and bright white while the big oven parts are a “off white”. So, I shot two scrap parts and put one in each oven. The big oven parts got much hotter, 420* vs 330*, even though I had them both set at 400*. Is it possible the parts got too hot and “burnt” the powder a bit? I attached a pic.