Baking soda is very nive media for sheet metal. Commercial operators
sometimes wet blast it, so there's no heat buildup. It is very gentle to
metal, but it still takes up paint efficiently.
I like to use it for home blasting. It doesn't get in your eyes and mouth
like grit, and cleans up very nicely with a garden hose. You can also use
it right out of the box for small jobs.
Nut shells are supposed to be bad for paint prep because they deposit oil in
the metal.
Regards,
Grant S. gls@4link.net
-----Original Message-----
From: Tibbers <tibbers@earthlink.net>
>I have seen blasting done with almond and other nut shells for that reason
>as well. Also used is a white powder....I want to say it is something
>appearing like baking soda that also takes off paint or rust, but doesn't
>work harden the material.
>
>Gordon
>
>-----Original Message-----
>From: owner-oletrucks@autox.team.net
>[mailto:owner-oletrucks@autox.team.net]On Behalf Of Perry Smith
>Sent: Sunday, January 16, 2000 8:59 AM
>To: oletrucks@autox.team.net
>Subject: [oletrucks] bead blasting
>
>
>Deve
> Before you bead blast the sheatmetal look into plastic media blasting. In
>industrial terms, bead blasting means shot peening, it hardens the surface
>of
>the metal, on sheetmetal parts bead blasting can cause brittleness and
>reduce
>the flexibility of the metal, this can result in the formation of stress
>related cracks that can destroy an otherwise perfect and rare or
>nonreplaceable part. I have had one vehicle done with the plastic media and
>the results were very good. The cost may be a little more but the results
>are
>worth it.
>
>Perry Smith
>'58 GMC Fleetside
>Phoenix, Arizona
>
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|