"BobH" wrote in message
.. .
Ed Huntress wrote:
"Wes" wrote in message
...
"Ed Huntress" wrote:

I'm not sure I followed that last paragraph. 'You want to read it again
and
see if it's you or it's me?
nexts = nests. My bad on spelling. The nest fit the show side of
headliner and used
vacuum to hold the part to it, the cut lines had SS blast deflectors to
protect the rest
of the nest.

The portions of the profile that I had to dwell on to get a sharp corner
tended to have
their blast deflectors wear though soonest. At first we made new ones,
later we just
welded them up, quicker and easier.

Wes

Waterjet seems to have a lot of tricky, unanticipated issues. The early
ones were hellishly loud, and you had to wear hearing protection when you
were in the same room. Is that still true?


I watched a demonstration of an abrasive waterjet system cutting 1/8"
aluminum and the pump made some noise, but the cutting was under water and
did not make noise that I remember. The whole workpiece was under a few
inches of water that got pumped in before the cutting started and pumped
out to below the workpiece when done.

BobH

That's interesting. I don't remember many details about the waterjets I saw
a few decades ago; they were still a curiosity and I didn't spend a lot of
time with them. I do remember the noise, however. It was fierce when they
were cutting metal. Maybe the underwater cutting came later?

--
Ed Huntress