US Coast Artillery - 12in Mortar Model 1908 3d model/print

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EPOCH3
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Posts: 624
Joined: 30 Jul 2006 22:22
Location: RI USA

US Coast Artillery - 12in Mortar Model 1908 3d model/print

Post by EPOCH3 » 04 Jul 2020 20:15

Hi - I wanted to do something different/easy so I started a couple of 12" mortar
projects to 3D print. Little did I know these things were more complicated that I thought.
Attached are a pics of my Initial 3D model of the US 12inch Mortar model 1908
As fielded at Battery Geary, Corregidor, Philippines and captured by Japanese
forces at the beginning of WWII. I will post some pictures of the 3D printed version
as they finish printing. Happy modeling
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EPOCH3
Financial supporter
Posts: 624
Joined: 30 Jul 2006 22:22
Location: RI USA

Re: US Coast Artillery - 12in Mortar Model 1908 3d model/print

Post by EPOCH3 » 05 Jul 2020 03:39

For anyone interested, the 12" model 1908 was quite an interesting and unique design.
There were actually two sets of trunnions (inner and outer) and two elevation mechanisms;
a standard conventional one used for the main cradle elevation (the big assy with with the springs
and cylinders) and a separate segmented one for just the barrel. It took me a while to figure out
how this worked. The barrel could be quickly dropped (by the foot switch up front) into a horizontal
position for reloading and then be brought back to the firing position that was already set up/established.
The inner trunnions allowed the barrel to rotate independent of the cradle. Going up the cradle and barrel
would move together. There were two curved arm like parts on either side of the barrel that had a sort of
sliding wheel at its end that when the barrel was released, would allow it to slide into the horizontal
position (following the inside curve of the main elevation gear). This sped up the time to reload and
get it returned to firing position. Just for fun :)
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EPOCH3
Financial supporter
Posts: 624
Joined: 30 Jul 2006 22:22
Location: RI USA

Re: US Coast Artillery - 12in Mortar Model 1908 3d model/print

Post by EPOCH3 » 16 Feb 2021 18:33

I finally got around to start printing my 12" Mortar m 1908 project.
Fairly simple parts but actually quite large in 1/35th scale.
Made a mistake so that barrel can't be inserted as-is and need
to reprint the cradle. Pretty cool piece though.
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