About this 3D model

No screws or other complex hardware, all snap-fit installation. Please print using the 3mf file. Print size requirements are strict! Please print the first test file first, check if the snap-fit can fit properly. (If there is a problem in this step, please do not continue printing, please raise the problem in time, until the problem is solved.) Assembly required materials only: 1. European standard 2020 aluminum profile. 2. Spring or rubber band or other elastic wire. 3. This model printed parts Assembly required tools: 1. Small screwdriver or steel ruler. 2. Grinding tool (only a small number of parts need slight grinding) No screws or other complex hardware, all snap-fit installation. Please ensure safe use! Take responsibility for safety, do not modify, do not commercialize, do not point at people.