Abstract: The present discussion relates to the design fabrication and use of synthetic scaffold structure for bone growth. In certain implementations the scaffold structures are comprised of a plurality of repeating structures each defined by a local topology. The local topologies are defined at a subset of points in their respective volumes by various parameters including, but not limited to, shape index, curvedness, mean curvature, and Gauss curvature.

Abstract: Examples are disclosed that relate to grills and methods of adjusting airflow through a fuel bowl of a grill. In one example, a grill includes a cooking grate and a fuel bowl configured to removably support the cooking grate. The fuel bowl includes an ash grate at a bottom surface. A base supports the bottom surface of the fuel bowl. The base comprises a first base side wall that defines a first base venting aperture, and a second base side wall opposite to the first base side wall that defines a second base venting aperture. A venting drawer is slidably received within the base, with the venting drawer comprising a first drawer side wall that defines a first drawer venting aperture, and a second drawer side wall opposite to the first drawer side wall and defining a second drawer venting aperture.

Abstract: Examples are disclosed that relate to grills and methods of controlling airflow into a grill. In one example, a grill comprises a cover comprising a grilling surface at a first end and a plurality of vents at a second end opposite to the first end. The grill further comprises a circular base configured to seat the second end of the cover. The circular base comprises a planar surface and a plurality of protrusions extending upwardly from the planar surface. The cover is rotatable relative to the circular base when seated on the circular base, and the protrusions are configured to selectively block and expose the plurality of vents in the cover upon rotation of the cover.