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Any members who can turn brass? 25 PR Drill round.

Quatermass

Well-Known Member
I have a 25 PR Mk II drill missing the dummy percussion fuze and cap. Are there any members who (or can direct me to somebody that) could machine the missing treaded rod?
Obviously happy to pay.

P.S. I was surprised to see that the drill cap was slightly larger than a standard No.117 fuze cap.

Thanks.
 

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I have an Australian rubber Mk2 Drill 25Pr but the nose cap is steel and not brass.
Made 1942 by cMc = Commonwealth Moulding Co P/L, Sydney.
Dimensions are :-
36mm overall length. Head is 27mm long and 28.5mm diam. Base hole is 28mm deep x 15mm diameter.
Thread is 22.1mm (0.875") outside diam. x 18 TPI. This seems an odd size so check your dimensions.
You could try a 22mm x 1.5 pitch . 1.5 seems to match 18 TPI? or lathe cut to suit your projectile.
I have noticed some diameter differences with normal fuze caps. 28.5 to 29mm and different knurlings.
Metric is 60 degrees and Whitworth is 55 degrees threads so not really compatible.
 

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Last edited:
I have an Australian rubber Mk2 Drill 25Pr but the nose cap is steel and not brass.
Made 1942 by cMc = Commonwealth Moulding Co P/L, Sydney.
Dimensions are :-
36mm overall length. Head is 27mm long and 28.5mm diam. Base hole is 28mm deep x 15mm diameter.
Thread is 22.1mm (0.875") outside diam. x 18 TPI. This seems an odd size so check your dimensions.
You could try a 22mm x 1.5 pitch . 1.5 seems to match 18 TPI? or lathe cut to suit your projectile.
I have noticed some diameter differences with normal fuze caps. 28.5 to 29mm and different knurlings.
Metric is 60 degrees and Whitworth is 55 degrees threads so not really compatible.
Thank you Ron, excellent information and pictures.
 
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