Sean Powell wrote:Mac wrote:
Today, I will be reducing the ends of these guys to form the pivot/rivet shanks.
Mac
I'm guessing that you stick them in the chuck of the drill now that the 'flag' is narrow enough to fit between the chucks and you file the diameter down, or maybe you do it on the lathe... but you could have a way of pinch and elongating the steel that I haven't thought about.
Sean
Sadly, it never works to try to chuck them by the end with the flag. The shank is too far off of cylindrical after all that hand work, and a three-jaw just won't hang on to them.
Just to check my memory against reality, I tried doing one that way in the lathe, and the first time the tool tried to dig in, it tore the work out of the chuck and ruined it.
I did the rest of them using my "new toy". I scored some collets, an adapter, and draw bar for my lathe at the model-steam-engineer's-convention last month.
http://www.cabinfeverexpo.com/ This allowed me chuck up the other end of the turning pins very reliably.
It took a narrow tool and a lot of overhang...
.....but I got them done well enough.
I should really start with longer rivets, so I end up with more shank to hold on to, but this is the only size I stock. The turned down shanks are long enough that I can nip off the remnant... but just barely.
Sure. It's probably cheating to use a lathe, rather than a file. But these fittings are another example of the sort of thing that armorers would have bought from locksmiths. I will try to live with the shame.
Mac