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  1. #1
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    2-inch Trench Howitzer bomb manufacture

    Images of the manufacture of 2-in Trench Howitzer bombs are not commonly seen, so here is one of the bomb head casting shop. They were cast in pairs in sand boxes, and the photo shows the emptying of the boxes in a Falkirk works.




    Tom.
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    I am so glad someone documented these activities.

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    How did they cast them to be hollow --

  5. #4
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    They most likely had a sand core that was suspended in the mold.
    ___HAZ/
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  6. #5
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    Quote Originally Posted by M8owner View Post
    I am so glad someone documented these activities.
    Many companies documented their activities, but unfortunately much of that documentation has been binned and lost over the years.



    Quote Originally Posted by Gspragge View Post
    How did they cast them to be hollow --
    As Hazord says, a sand core was used which forms the cavity when the molten metal is poured into the mold. Another image attached, this time of core setting, in which the sand core is carefully placed into the drag (the lower half of the mold). Once in position the cope (the upper half of the mold, in the immediate foreground) is placed on top of the drag, exact alignment being maintained by the vertical locating pins.

    Once cast and all the machining processes done, and tested for leaks, the raw bomb was washed and thoroughly dried and then painted. The second image shows the yellow ochre paint being painted on by brush in the paintshop.




    Tom.
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