I needed a M12 handscrew to fit a new project, a telescope pier attachment.
Based on the samyp design (thanks, samyp !!!), I made my own project on Cubify Design, avoiding the need of supports and making it shorter (the space to install it is very limited, so I coud not have a tall head).
Printed in ABS, 0.3mm layer, 4 perimeters, 25% infillvery, so very strong !