Jim Wilkins wrote:
"Michael A. Terrell" wrote in message
...
...
I have cut dozens, if not over 100 with an Audel hand nibbler.
I've worn out three of them in the last 45 years, plus a half dozen
of the crap ones that Radio Shack used to sell.

When an Adel nibbler starts to dull I remove the compressed washer,
spring and stripper plate, disassemble it and grind the cutting edges.
I leave the stripper off when reassembling it so it doesn't mar the
surface around the cut and gets into tighter spaces.

They are slightly harder to use because the stripper spring helps
retract the punch if it isn't oiled, such as for modifying assembled
aluminum chassis boxes I can't easily wash.

http://www.adelnibbler.com/Step_by_S...el_Nibbler.htm


The frames broke on these, near the die. I wore out a lot of
punches, before the frame died of metal fatigue. I used to do a lot of
prototyping, with hand tools. Trimming fiberglass circuit boards to fit
into a case was the worst for wearing out the tool.

--
Never **** off an Engineer!

They don't get mad.

They don't get even.

They go for over unity! ;-)