I have a penchant for customizing everything i have and in everything that i do. And 3d printing just exacerbated this.
I am an engineer by trade, have a BS in electronic engineering and come home from work and engineer, well, whatever i want.
I have a Prusa with a few custom mods.
Printing 3mm, PLA from a wades extruder onto a kapton covered plexiglass that has a mirror finish.