About this 3D model

This is my second version of the camera slider with follow function BOM list: 1M( 15mm) carbon fiber tube ×2 1M (12mm)carbon fiber tube ×1 4135mm bearing ×8 M4 butterfly nut ×2 AB glue ×1 M435mm screw ×6 M425mm screw ×2 M410mm screw ×1 GT2 2mm Belt （2m） ×1 M310mm screw ×5 M3 nut ×1 12V gearmotor : https://www.dfrobot.com/index.php?route=product/product&search=motor&description=true&page=6&product_id=1460