WW2 German 3.7cm Flak 18 Anti-Aircraft Shell

UPDATE: 12-4-24 (improved STL file quality)

Full size imitation of the 3,7cm anti-aircraft shell used by Germany during WW2. This was fired from the 3.7 cm Flak 18 autocannon, of which over 20,000 were made during the war and used for both anti-aircraft and ground support roles.

Comes with a detailed fuze and correct profile of projectile + cartridge case using dimensions taken from technical drawings, plus crimping grooves and a separately printed primer.

Prints in 5 major pieces plus 3 printable hex rods which secure and align the parts. Test fit before adding glue to permanently lock everything together. I also added an STL for the complete case if you have a large enough printer that can print it in one go (265mm Z-axis space required for that).

Approx. complete size: 367mm (14.5") high and 49mm (1.9") max diameter.

Great for display in a WW2 collection or for use in re-enactment.

You can find my autocannon shells collection here on Cults!

(Note: This is a cosmetic imitation only, it cannot function or be made to function as a real device. I am not responsible for any mis-use of the printed items. The renders showing paint colours and markings are for
illustration purposes only.)

Minimum 135mm Z-axis (height) print space required!

If you have a large printer with at least 265mm Z-axis space you can print the case as one part, use the STL file named 'cartridge complete'.

Use 0.20mm layers or larger for the case parts and hex rods. Use 0.12-0.16mm for the primer, fuze and projectile. Suggest reducing the infill of the case parts to between 5-8% to save some time and material.

Print HexRod1 two times (used to assemble the case + projectile) and HexRod2 once (used to attach the fuze to the projectile).

All parts have been pre-oriented in best printing position and do not need supports.