16 Dec
2014
16 Dec
'14
9:30 p.m.
Do investigate Pexto hand and arbor punches. These do not require a
pilot hole and, in, at least in the case of aluminum, have an
interesting property.
I don't, as yet' have an abour press, although it is another luxury I am
considering. But one advantage of the bolt-up type (Greenlee, Qmax)
is that you can put a hole anywhere, in any size bit of metal, it doesn't
have to fit in the press.
[Filling a hole]
The trick was apparently that the slugs that come out
of the arbor punch
come out a bit concave. Pressing them into place causes the diameter of
the slug to expand slightly, locking it in place.
I suspect that's true of Qmax cutters too in that their slugs are dished when they
come out and are a tight fit in the die. Not that I have ever tried it (and of course
those slugs have a central hole)
-tony