This study aims to investigate the experiences of librarians/staff members who are responsible for facilitating makerspaces in public libraries, including their works and core competencies, their needs and experiences of training, and future plans in makerspaces. To do that, we carried out semi-structured interviews with 11 librarians/staff members and 1 library director from 7 public library makerspaces. Findings show that the participants received financial supports from the government agencies or/and relied on their library budget to run makerspaces. They identified competencies such as technology literacy, domain knowledge, teaching/programming, willingness to learn and curiosity, communication skills, leadership, and design-thinking. They have future plans for expanding spaces, purchasing equipments, program development, and so on. We believe findings could be useful for those who currently manage or plan to implement a public library makerspace by understanding practical issues and training needs in makerspaces.