Time to fess up I guess :wink:
This is around 27 years old and comes before the days of political correctness gone mad (well, actually not too mad when I think about it....). This was my GSCE metalwork project, to design and make a full steel shell with working fuse. Obviously would have been MUCH easier if the internet was around as I was going off images id seen in Hogg's books and a few quick visits to the Imperial War Museum. Fuse is a centrifugally locked impact device (which of course would never bloody work, but for a 15yr old it was damn hard to make, stainless steel collars, sliders and housing in phosphor bronze, cast alli cone, boy I remember it well!). Dug it out the other day and was rather pleased with it, so have re-installed it in my collection as a bit of an oddity! The calibre of 105mm was only chosen on the basis of what thick walled tube I could find (we had no foundry capability so everything apart from the aluminium bits had to be machined!). And yes, the biohazard sticker was something my son had kicking around so I temporarily stuck that on the other day as a bit of a curve ball :tinysmile_twink_t2:
Hope it was a bit of fun! Some metalwork project!