12 Pounder by Carnyrex - FINISHED - 1/8 scale - shoots nerf darts

[Carnyrex]

Title says it all. I design muzzleloading nerf stuff, and after building a 3d printed french 12 pounder I wanted to do a "quick" modification to use the same cannon on a naval carriage. The goal is to try and balance making a fun toy, an historical model, and an educational exercise. At 1/8th scale, and printed in plastic, it's large enough (but cheap enough!) that you can actually play with it, and the goal is to be able to not just shoot, but let you play with the REALLY fun parts - rigging, gun laying extc!
 

The scale is... rough. In addition to simply using the "wrong" cannon as a model, the cannon's dimensions are slightly warped to accomodate the internals of the nerf mechanism. I've used the HMS Victory's 12 pounder carriages as a starting point, but it is slightly stretched to accomodate the warped dimensions, as well as numerous compromises to keep it as a snap fit model.
 

Attached is a render with an unfinished gun deck, a test print, and current progress with a wood-fill / iron-fill PLA "Fancy" version which I'm hoping will be worth the effort!



Test print, with original barrel taken from last design. Maybe a bit too colorful, but packs a punch!


Test print for pulley blocks - works with 5mm "cable"

Close up of barrel before polish, and post danish-oil carriage. Note Kebab skewer of drying wheels.



Carriage after sanding, before oil

[VTHokiEE]

This is very cool, do you have a clip of it in action?

[Carnyrex]

Yep - or at least, I have a bunch of video of my  original cannon which uses the same mechanism:

Using some nerf darts - 

Using some printed chainshot - https://www.instagram.com/p/CJUa2dHhfco/

 

[Carnyrex]

Okay, done - here it is in action: 
 

<iframe width="560" height="315" src="https://www.youtube.com/embed/Pf4Z_lr6-LA" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

Files below:

Files:
https://www.etsy.com/shop/CarnyRex
Print guide:
https://docs.google.com/.../1_OaWsQT4hwaDKnjps7Dh.../edit
The vid:



And of course, a cardboard gun deck...

Edited August 2, 2021 by Carnyrex

[thibaultron]

Great idea!! 

 

The print guide link doesn't work.