Regarding your series on, " Making up a usable No4 sniper" in part 2, the Plate used for securing the No4 body was this something most Armourers would produce themselves?
Regarding your series on, " Making up a usable No4 sniper" in part 2, the Plate used for securing the No4 body was this something most Armourers would produce themselves?
I know I'm not PL, but here's my Bubba fixture. Works well if you DON'T consider it a jig. Some supplemental alignment has to be done.
Make sure the rod is a snug fit in the raceway. Otherwise the center in the end won't be of any help.
Yep, same meat, different gravy with JM's fixture. The difference is that because the backsight axis pin is the datum for all squareness, that's why mine is clamped to the jig by that hole
Most Armourers would have no need for the jig as they wouldn't be making up a replica No4T. I made it just for the article. However, it is based on a similar jig that we had for re-engraving body numbers 'on the square' so to speak as we were not permitted to stamp, delineate or otherwise mark the body except by engraving
Thanks Peter, Didnt think you were all knocking up replica No4T,s just thought it may of been part of the apprenticeship, we made all kinds but the tool makers clamp I made is still in use today.
JM that looks an easy approach also.
I've used it mostly for odd repairs and just for checking odd things. A twisted action is immediately apparent!
The good actions that have been checked show good parallelism between the action body bottom and the rear sight cross pin. Sometimes a little out, but no more than a few thousandths. I suspect the action bottom was a clamping datum surface for the drill and ream jig.
BTW, that's the real lost info. Forget rifle/aircraft blueprints. The TOOLING blueprints reveal the nature of the beast.
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