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  1. #1
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    3-inch HE Bomb Restoration Advice

    Hi,


    I have this incoming semi-relic 3-inch HE bomb as a restoration project. (seller's pictures) I'd now appreciate some advice on how 'doable' this is as British mortars are a fairly new area for me.


    The obvious problem is the missing fins. How difficult would it be to transplant on a replacement? (It believe they were tack welded) It occured to me that an unrotted fired tail unit might be a good donor. Alternatively, how rare are complete tail units?


    Then onto fuzes. I believe a No.162 fuze is correct for this and there's also a fuze adaptor? How difficult / expensive are these to find?


    Thanks,
    Mark
    3-inch mortar - 1.jpg3-inch mortar - 2.jpg3-inch mortar - 3.jpg

  2. #2
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    That item appears to hardly need any work at all. Just sand blast and paint. Making a new fin is easy also. Just simple metal working and welding skills required.
    Last edited by M8owner; 24th February 2020 at 02:01 PM.

  3. #3
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    The fins come up now and then. The fins are spot welded to the center in a jig. It looks like you need an adapter for the 162 fuze which do come up now and then. Plenty of fuzes about still with their cardboard packing. As for finish, if you want a HE version you need to clean back the body and fin till its shiney new as if it came out of the press, as to say, factory finished before painting and shelac it by spraying to give a light to dark brown finish and oven dry it, as they done the originals. I believe the windage band was not coated, not sure but at least one coat, and then banded green and red on a rotating jig by hand with a paint brush and hand stenciled with the usual markings etc.

  4. The Following User Says Thank You to BMG50 For This Useful Post:

    peregrinvs (24th February 2020)

  5. #4
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    That looks a good one i would just get it back to bright steel and just use shellac of finish it, it will look like this.
    Attached Images Attached Images

  6. The Following 3 Users Say Thank You to Andysarmoury For This Useful Post:

    BMG50 (24th February 2020), peregrinvs (24th February 2020), wichitaslumlord (25th February 2020)

  7. #5
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    Just the perfect picture.

  8. #6
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    To be strictly correct you should obtain Fuze DA No 162 Mks 1/2, 1/3, 4, 4/1, 4/2, or 8. All other Marks were either for Bombs 4.2, for India only or were never produced.
    The tail units may be arc welded, spot welded, projection welded or brazed.
    Most of the spot welded tails had 5 spots and the projection welded tails had 8 welds.

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    peregrinvs (25th February 2020)

  10. #7
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    Now received and here are some pre-cleaning pictures. I’m not currently thinking of trying to fabricate replacement fins as I simply don’t have that sort of metalworking kit. My initial plan is to clean it back to bare metal and unscrew the tail unit. I can sort out the shellac finish and paint markings while I wait for the other parts to turn up.
    850BC3F2-2E63-40C2-AF34-0E29CC87B9BA.jpg64F2BC30-97B2-4DC0-BAD2-C6F38EA688C5.jpg37EAF0B0-051D-46BA-9B0C-F18CD95CFE4C.jpgB0B6BBE0-590A-4BCD-9737-A5B9CCFBFF1A.jpg

  11. #8
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    At last!

    The tail unit really didn’t want to come off and this is the end result of a great deal of heat, penetrating oil and brute force. (Especially the latter) I can now proceed to fully restore the body pending sourcing the other parts at some point. Of the latter, I have had no success at all, so all leads very gratefully accepted.

    A few questions:

    - Was the metal band around the middle left bare?
    - Was there a fuze socket filler plug for these?
    - Is shellac or walnut varnish better for the body finish?

    Thanks,
    Mark

    58AEA080-4DE5-47FE-AE96-206971418246.jpg7AE33DB3-CEC1-4E53-A38B-7721A182CDD7.jpg94CF855E-126D-41A3-85FA-4A9ED750DB91.jpg

  12. #9
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    Cleaned, polished and coated in shellac. It’ll look a bit more interesting when I’ve put the red and green filling bands on it. I’ve also found a chap on eBay who does 3” HE mortar stencils.

    Still curious to know if there was a fuze socket plug for these? It would be an improvement over an empty hole if I don’t find a fuze.
    Attached Images Attached Images

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  14. #10
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    My Australian fuze plug is black bakelite and is 65.5mm long.
    No 6 AUST 1E 1952. Quite common so you should find a UK example for your mortar.

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    peregrinvs (22nd March 2020)

 

 
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