One of Nic Bonne’s tactile models in action. Their website contains files for downloading 3D printable models, lesson plans, and a best practice guide for engaging with visually impaired audiences. In its third and final form, the model disc is now completely fragmented into patchy clouds. He encouraged them to include more visually impaired people in the design process, and to seek feedback from them at all times. This could be avoided if accessibility projects were a larger part of mainstream astronomy, since both sighted and visually impaired audiences would be involved at the same level.