At 10:59 AM 2/23/04 -0600, Keith Turk wrote:
>Okay so I was a bit overly optimistic on how well that sand blasting thing was
>going to do on the chassis... that my friends is a radical understatement....
>you can blast to your hearts content.. and Nothing or dang little will
>happen...
>Keith
Well, Yes & No
the degree of effectiveness varies with the type & grade of grit and the
air pressure driving the grit.
we used to use glass beads to remove paint without damaging the underlying
metal.
for removing porcelain enamel overspray already bonded to the oven hangers
we used a very hard grit. a little of that grit would cut right thru sheet metal
( eats the dickens out of the spray nozzles too)
I've seen metal bent by playing too long on a spot or area, expanding the metal
same as use of a ball peen hammer.
We even used that technique to expand metal plugs into a hole in sheet metal.
(learned that from a old welder that used to work for the Naval Ordnance station
here in Louisville,
He worked that out, to fill holes in armour for the gun mounts they reworked.
expand it with shot blasting and then weld , that reduced the tendency to crack
in the high strength armour/steel.)
Also used sand blasting to drill holes in tempered glass.
( boy, this list brings back a lot of memories of years in machine shop.)
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