Photogrammetry Pencil Sharpener

3D printed shell pencil sharpener.

Small pencil sharpener, seashells, lamp, phone camera, foam board, wooden dowels, 3D printer.

Get a shell that has a decent amount of depth.

Set up a plain background that is white, grey, or black. I had the most success with a white background. For optimal results, take pictures in 5-degree increments, if done correctly you should end up with approximately 70 pictures.

Upload your images to Agisoft Metashape and generate your model.

Make a mesh that conforms to the pencil sharpener of your choice and combine it with your shell mesh in Meshmixer.

Print all of your parts and assemble them using any strong plastic adhesive. I used hot glue but Epoxy would be better.

Test out your new sharpener!