There are 3 different sizes of Octagon cookie cutter available for download, 3 inch, 4 inch and 5 inch, each can be scaled in your slicer for specific sizes as needed. 

Each cookie cutter has a thick brim to help with rigidity and strong surface to push on when cutting dough or fondant. 

Print Settings:

-No Supports needed

-Print with brim down

-These were printed at a .15 layer height. 

***If a 3D printed part is going to be in contact with food it is always recommended to use a food-grade PLA or PETG filament, also print at a higher resolution such as .12-.2mm layer height, and seal the final print wiht a food safe epoxy or polyurethane. I recommend this food safe craft resin available on Amazon:https://www.amazon.com/dp/B07YCVVYFK?tag=3dpriner-20&ref=ppx_pop_dt_b_product_details&th=1&geniuslink=true ***