About this 3D model

Part are designed for 3d printing. It is best to use resin material, and some hand work is necessary to make it work well. More models: https://cults3d.com/en/users/Tanerxun/3d-modelsThe parts should be smooth enough,so usually you need to sand some areas.If you use PLA/ABS material,you need to try to make the part as smooth as possible.Some M2X6 （4pcs） and glue are needed to assemble the parts.Before using glue between parts "bottom drive-UP" and "bottom drive-DOWN", you should try to test if the mechanism work well. When you drive the part "bottom drive",the 4 blades open or close gradually. When it is open,the "mouth" diameter is 25mm.STL and STEP format files are included.There is a video on Youtube which shows similar structure. https://youtu.be/3dwmSeUinQE?si=qy1KigJATOmfR0rG