Re: Paint primer questions....

[chris gonzalez <chris24g@yahoo.com>]

> So, what's etching primer do??
all i know (which is not much) is that etching primer will make a
chemical bond (as opposed to a mechanical bond) with bare metal.
"Regular" primer depends on a mechanical bond (i.e. sanding scratches)
to stick. FWIW.

oh, and the best thing to get a jump on the rust is to prime as each
part is blasted. kind of a hassle, yes, but as you know, oxidation
starts as soon as the metal is exposed. 

i also just bought the harbor freight special (the 40 lb. pot). what
sand did you use from home depot? i think the finest that have is like
60 mesh? 

and um, where did 2000 lbs. of sand go? is your yard a sandlot now? :^P


got pics?

chrisg
http://www.dublife.com




--- Shawn C Meze <skerocdriver@juno.com> wrote:
> 
> On Tue, 29 May 2001 19:53:51 -0700 (PDT) chris gonzalez
> <chris24g@yahoo.com> writes:
> 
> >as for paint, i would spend the extra money for Glasurit, Sikkens,
> or
> >PPG. Give me the brand of primer, and i can ask him to make a whole
> >schedule for you to follow.
> 
> 
> I asked him about it and all he could tell me was that it was a
> competitor brand of PPG so....... I'll ask what it is exactly. He
> said he
> would give me clear coat as well. hopefully its a quality brand. Ill
> ask
> him for more details. Thanks!
> 
> 
> >now i have a question. i've been thinking about pressure blasting my
> >76, but people have told me that the friction and heat generated
> from
> >the sand could warp (i.e. cause ripples) in the sheet metal. who did
> >your car and what media did they use?
> 
> 
> Depends on alot of conditions. I did the work myself and for me, I
> use a
> cheap sand blaster (from Harbor Freight, $60) and the sand blasting
> medium is from Home Depot. So far ive used over 2,000 lbs of sand and
> I
> still have the hood to finish. 200 lbs more should finish the job
> before
> some small fill jobs and priming followed by days of wet sanding. I
> just
> want to get something on it before the rust sets back in. 
> I checked the temp of the metal with my thermo gun while blasting.
> Nothing more than +5 to10 degree increases and im not staying in one
> spot
> for very long. keep it moving and it doesn't have time to heat up. I
> have
> a huge compressor which keeps the pressure in the 90 psi range which
> seems to both keep temps down and make the sand last a little longer.
> 
> So, what's etching primer do??
> 
> 
> Shawn Méze
> 86' Jetta GLi 8V       84' Scirocco 8V           88' Corvette -SS 30-
> 82' Scirocco GTi -FSP 54-     79' "Project FSP Scirocco"
> The Fastest, Quickest, Cleanest and best looking Scirocco in all of
> San
> Diego!
> http://www.Geocities.com/MotorCity/Speedway/1308/index.htm
> 
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