United States M67 HEAT Shell Cutaway

UPDATE: 16-4-24 (STL file quality improved)

*Note: this is intended for people with moderate-to-advanced experience in 3D printing. It will require some fit and finish and you should expect that some parts will require supports and clean-up to get a good finish.

Full size imitation of the United States 105mm M67 anti-tank HEAT shell. This could be fired by M2A1 or M101A1 howitzers, which were used in the Korean and Vietnam wars, as well as being mounted in some variants of the Sherman and Pershing tanks.

I designed this using original engineering drawings of the projectile. It can be built as either a complete shell or as a cut-away showing the internal details: hollow ogive, copper liner and M91 fuze. The ogive and fuze thread into the body, I made the threads with extra clearance and tested them at 0.16mm layers which worked very well for me.

Note that the fuze uses left hand thread!

For the cut-away version, the 'filler' STL is intended as a template to show you how to represent the HE filler charge which is in the in the bottom half of the body beneath the liner. You could use a modelling clay or something similar to fill this cavity in.

Approx size of complete assembly: 508mm (20") and 107mm (4.2") max diameter.

Great for display or use in a re-enactment setting or even to use as an educational aid!

(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 225mm Z-height print space required in order to print the ogive (nosecone)!

0.16mm or smaller layers recommended for the threaded sections, everywhere else can use 0.20 or larger layers.

The complete body STL measures nearly 283mm in height, if your printer is not big enough, I split the body in two halves which are just under 150mm height each.

I pre-oriented the parts in best printing position but you should expect that supports will have to be used in some places along with clean-up and post-processing.

Reminder: Fuze uses left hand thread!