Делаем 3д принтер сами. С чего стоит начать?!

Very often I hear questions about the independent production of 3D printer. On this occasion, I was already tired of telling everyone and decided to make a series of videos on this topic. Well, as usual, I think it is worth starting with things that should be determined before you start buying something. I think it will be useful to know my opinion. Sincerely, Smirnov Sergey