Parametric "The Shoe Last Tree"

This is a fully parametric, 3D-printable shoe last / shoe stretcher (also called a shoe tree). Regardless of the name, it's designed to maintain the shape of your shoe when not in use. It's most commonly used for leather shoes, but there's no rule here.

It consists of two main parts - a front (toe) section and a heel section - connected by a central telescoping threaded mechanism. By rotating the mechanism, the distance between the toe and heel increases, allowing you to stretch shoes from the inside.

The model is optimized for FDM printing with no supports required thanks to flat bottom cuts and teardrop-shaped sockets. It supports left/right versions with asymmetric toe shaping, multiple sizing systems (EU/US), and adjustable proportions.

It has a lot of parameters to set in customizer - you can literally fit it like a glove, like a shoe I mean ;-)