About this 3D model

I modeled this method feeder for easy printing and reliability without supports requirement. Tubing insert in photo #5 is recommended. Link: https://www.aliexpress.us/item/2251832653078063.html?spm=a2g0o.order_list.order_list_main.11.21d61802Sipw7t&gatewayAdapt=glo2usa Your feedback is appreciated.