Hi! Nice project - we need a .step file of your comb, as well as a few images of how you made it (for example your sketches and parametric modeling timeline). Additionally, you don't seem to be requesting a grant for this, and the project isn't built, so please either request a grant to get it 3D printed if you do not own a 3D printer or resubmit this as a Build Review once it's built! Thanks!