This project came from my wife.
A special microscope exists on the market, what has heated bed. It can be used to examine samples from old artifacts before restoration. It specifically used for leather objects in our case, but it can be used for other things also.
The goal is to determine the exact temperature when certain change happen in the material.
This is a time consuming task, the currently used equipment is fairly old, and limited in functionality.
I decided to design and build a new one.