Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2585541.

My wife needed some spikes for a hat that Bowser from Nintendo would wear. I designed this in Tinerkcad with some holes in the bottom, no supports needed they are small, to allow hot glue to hold better. We then used silver spray paint. The spikes are 1 inch wide by 1 inch tall.

Filament is Makergeeks white hot white:

https://www.makergeeks.com/collections/pla-filament-1-75mm/products/maker-series-pla-3d-filament-175mm-white-hot-white-1kg