The file '105mm Flak Projectile 3D Printer Model' is (STL) file type, size is 22.7MB.
This is a high explosive projectile fired by various 105mm guns used by Germany during WW2, mostly anti-aircraft (Flak), but also the deck gun of Type IX U-Boats. It's designed to be crimped onto it's shellcase, so not compatible with field guns firing 2-piece ammunition.
The nose fuze is a separate Thing:
https://www.thingiverse.com/thing:5023000
105cm_base_plug.STL | 14.9MB | |
105cm_driveband.STL | 147.3KB | |
105mm_50.7mm_thread_x_20.STL | 10.6MB | |
105mm_base.STL | 4.7MB | |
105mm_base_thread.STL | 10.6MB | |
105mm_base_upper_shelled.STL | 175.1KB | |
105mm_middle.STL | 1.1MB | |
105mm_nose_shelled.STL | 1.1MB | |
105mm_shelled_joiner.STL | 65.7KB | |
105_nose_thread.STL | 5.2MB | |
Zdlg.-holder.STL | 593.9KB | |
Zdlg.-holder_rim_thread.STL | 5.7MB |