This is a 40mm mortar made for a potato cannon with a barrel made of 1.5in 40sch PVC pipe. This uses a #209 shotshell primer. Use a 1/2in flathead common nail. Set the primer and glue in the stopper, then fill the inside with the explosive of your choice, glue it up, stick a nail in it and fire!

Disclaimer: This is for prop use only! I am not responsible for any actions and consequences you take from this 3D model, including what it is intended for (prop use).

Note: This was inspired by a TKOR video, RIP Grant Thompson.

Note: I have printed this and the pieces do not not fit together due to high tolerances, I will put the link to the tinkercad if you need to modify the dimensions: https://www.tinkercad.com/things/6P2xIpWIuqS-15in-mortar-shell-40sch-pvc

Potato Cannon Mortar Shell for 1.5in 40sch PVC

mortar shell 2.0.stl

This is a fin-stabilised armor piercing round for a potato cannon with a 1.5in 40sch PVC barrel, the barrel shouldn't be rifled, as that would most likely break the fins.

Ender 3 S1 Pro:

80% infill
6 perimeters
Brim
No supports

Note: These have not been specifically tested, but I have a lot of experience printing rounds and this should work.

Disclaimer: I'm not responsible for any consequences that result from this model. What you do with this is your responsibility and your responsibility only.

Note: Please credit me if you use this in any online content, and if you reupload you have to put a link to the original model page, and put my username in the description.



Potato Cannon AP Fin Stabilised Round 1.5in 40sch PVC pipe

stabilised potato cannon round.stl

This round was created for a 40mm diameter potato cannon (1.5in schedule 40 PVC), I've put angled fins on the bottom of the projectile to aid in stability and sabot separation, and I've added grooves in the sabot to increase drag and decrease TTS (Time To Separation) once the projectile leaves the barrel. 

DISCLAIMER: I'm not responsible for any actions and their consequences resulting from these models.

Potato Cannon 40mm APFSDS Round with Sabot

APFSDS Round.stl

I created this round for my potato cannon, it's designed for long-range shots and stability. It should be printed with supports on the print bed, otherwise, it's a pain to remove supports.

DISCLAIMER:
I'm not responsible for any actions and consequences resulting from this model.

Potato Cannon AP Rifled Round

Version 2 changes the diameter from 40.46mm to 40mm so it fits into the cannon better.

I designed this round for my potato cannon. It has a diameter of 40mm. You can print this without supports, but you should use a brim, as it is relatively tall. Set the first layer height to 0.35mm (If you're using 0.2mm layer height) to prevent elephant's foot.

The flat bottom round is printed without supports, however, if you want something more aerodynamic you should use the aerodynamic version (print with supports).

Version 2 changes the diameter from 40.46mm to 40mm so it fits into the cannon better.

DISCLAIMER:
I do not accept responsibility for any actions taken and their consequences.

Potato Cannon AP Shrapnel Round for 1.5 Inch 40 Schedule PVC Pipe

I designed this round for my potato cannon.

AP Shrapnel Round for 1.5 Inch 40 Schedule PVC Pipe

Potato Cannon 40mm AP Shrapnel Aerodynamic Print With Supports.stl

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Potato Cannon Mortar Shell for 1.5in 40sch PVC

Potato Cannon AP Fin Stabilised Round 1.5in 40sch PVC pipe

Potato Cannon 40mm APFSDS Round with Sabot

Potato Cannon AP Rifled Round

Potato Cannon AP Shrapnel Round for 1.5 Inch 40 Schedule PVC Pipe