My toaster oven has two oven racks. I have the OEM tray that I use to bake my pc boolits on one of the oven racks. I would like to make a tray/basket for the second oven rack to double my rate of baking. What is an ideal material to use to make the tray out of? I looked at "rabbit cage wire" and it was 1/2" grid, which is too large for 9mm boolits. The tray is about 6 X12" in size. What did you use to make a tray?