Not sure how to name this object, even in Spanish (my native language) I do not know how to call it ... Well, check the pictures and you will understand everything. It is just some kind of stand to add a sheet of paper or thin cardboard in order to have a good and clean background for your pictures (do not limit your pictures to a white background, try everything you can think of). Now I do not have to worry anymore about my messy and scratched table.
I designed this object because I downloaded similar things from other sites I did not like them, I could not add three perimeters correctly. I like to work with three perimeters, this almost always allows me to print with no filling. So I designed my object to be able to print it with three perimeters (0.40mm per perimeter).
I design and share this for free but a donation is always welcome, you can't imagine how much plastic I waste making prototypes! Gracias!