Re: What car is the best buy?

["Fred Munro" <munrof@isys.ca>]

Jeff;

    I use a 100 lb capacity siphon feed sandblaster I bought at Sears for
$70 many years ago. It works fine for spot repair and small areas(~1 square
foot) - anything larger takes a long time and lots of sand. Pressure
blasters use less sand and are more efficient, but they cost around $400 -
Princess Auto carries pressure blasters in Winnepeg.
    Sandblasting is the most effective way to completely remove rust and it
leaves an excellent surface on the metal for mechanical paint adhesion. You
can grind away the rust with an abrasive disc, but this removes too much
good metal and can leave the panel thin, weak, and prone to buckling in that
spot. It also tends to leave small pockets of rust intact at the bottom of
the pits. Sandblasting completely removes the soft rust and leaves the
harder good metal intact ( it also does a nice job of raising grain on wood
if you are into artsy woodworking, but that's another story ...). It leaves
the metal surface mechanically and chemically clean, and the metal will
immediately start rusting, so treatment with the acid metalprep is a
requirement for a lasting repair.

HTH

Fred Munro
'91 200q  257k km
-----Original Message-----
From: Ron Mruss <rmruss@pangea.ca>
To: 'Fred Munro' <munrof@isys.ca>
Date: Sunday, September 13, 1998 12:34 PM
Subject: RE: What car is the best buy?


Fred,

Thanks for the info.  I think that the joints on the passenger side rear
wheel well are rusting just as you described.  I'm kind of appaled at the
repair job that the bodyshop did.  It looked great on the surface, but look
a little deeper and...not so great.  Oh well.

All this is new to me so forgive this next question:  is a sandblaster
suitable for bodywork expensive?  I have access to a paint sprayer, but I
don't know anyone who has a sandblaster.

Thanks again.

Jeff