In any punch and die setup the punch is normally parallel and the
die is also parallel for the 1st 2 mm then it tapers away toward
the die bottom so that as the punch pushes the cut metal through
the parallel part then is free to fall away once the die is bigger
than the punched metal. This is obviously not the case in the
Lindstrom 2.5mm hand tool you sent back. They are probably a far
eastern copy of the genuine Swedish made tool.
I think you have hit the nail on the head. The pliers I had were
Swanstrom, not Lindstrom just to set the record straight but I have
bought many Swanstrom tools which have always been good quality, but
these pliers were such poor quality, I was shocked. Plus, they
didn't work at all. When I finally did get the little disc out, it
had a large rolled edge on the back side as if the punch were very
Now I have to admit something that is a little embarrassing, but I
will go ahead. I have a hole punching plier that looks like the
Roper Whitney but I had put it away and forgotten about it as it is
very heavy. I can use it to punch the 2.5mm hole but have not tried
the bigger punches. But it works quite well and the little disc
falls right out. Now I wish I had the genuine Roper Whitney but
didn't know about it at the time.
But I did want to reply to your post and say "thank you" for taking
the time to help me out. I do appreciate it.