These three gears are very large and need to be used with a mammoth gear set, or in some cases you could get away with an enormous gear set. Either way, these big gears are going to make to tremendously large art.
Page 1: a 350 gear with a 200 cutout
Page 2: a 378 gear with a 270 cutout
Page 3: a 330 gear with a 240 cutout
These design images will be updated with actual product pictures as soon as possible, by late May ideally.