I am the owner of 3D Printerly, an internet site dedicated to simplifying 3D printing. Printed more than 900 posts and made a newbie's course. I believe in 3D printing and its capability to transition people from exclusively people to producers. Powder coated PEI steel sheets are a great choice https://gunnermpufo.blogars.com/28977539/multicolored-3d-printer-options