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Re: [Tigers] dry ice blasting

To: jodyfkerr@gmail.com, FHSLOTH13@aol.com
Subject: Re: [Tigers] dry ice blasting
From: Rollright@aol.com
Date: Sun, 17 Feb 2013 13:15:23 -0500 (EST)
Cc: tigers@autox.team.net
Delivered-to: mharc@autox.team.net
Delivered-to: tigers@autox.team.net
Full-name: Rollright
Hello,
 
If it can get it cold enough, the 350 psi blast pressure and the CO2  
pellets should make short work of it.
They haul these rigs out to sites like where graffiti people "Tag"  
buildings. This is just one of their uses and work/money streams. So going to a 
 
car otherwise immobilized shouldn't be a problem.
 
Jim Armstrong
 
 
In a message dated 2/17/2013 11:23:22 A.M. Eastern Standard Time,  
jodyfkerr@gmail.com writes:

I wonder  how well that would work for stripping off thick undercoating?

On Sun,  Feb 17, 2013 at 9:16 AM,  <FHSLOTH13@aol.com> wrote:
> When I  worked in a margarine plant we used a frozen carbon dioxide   
system;
> a high pressure pump blasted the equipment to be cleaned.  All  the 35 
years
> of paint came off without affecting the metal  parts of the  machines. It
> would, however, destroy any plastic  parts or other materials such  as
> insulation.
>
>  Fred Baum
> 9470768
> 382002353
>
>
> In a  message dated 2/17/2013 10:25:10 A.M. Eastern Standard Time,
>  Rollright@aol.com writes:
>
> Hello,
>
> When I bought  my Tiger in 1976, I didn't realize how  rusty it was under
> that  brand new coat of paint.
> in 1979, the  rocker bubbled and I  tapped the area with my finger. Right
> through...
> So, all  around the car fresh metal. Cost nearly as much as  the car.
>  Another
> complete paint job and rust removal after being hit in   the rear in  2000
>
> The trunk floor had been painted (when  I bought  the car) with a tarry
> substance to cover the surface  rust there.  Over the years, I've thought
> about
> haw to  tackle the trunk and bring  it up to the standard of the rest of  
the
> car.  Recently, I committed  to an attack. In the last  month I tried
> chemicals
> (paint thinner,  lacquer thinner,  then acetone) and just made  a mess. 
Then
> tried a  stiff  putty knife in a cold garage and got  down to rust and
>  original  paint. But, this approach would take forever and leave   the
> paint,  rust
> and traces of the tarry stuff. I thought  about media   blasting but the
> resultant "stuff'" would be  there for ages. And get  painted  in.
>
> This weekend I  stumbled on a new (to me) system of  blasting: Dry Ice
> blasting.  This would make the now dried-out tarry  stuff very brittle and
>  take
> the trunk area down nicely. And no  residual media (Black  Beauty, glass
> beads,
> and the like) to worry   about.
>
> Anybody done this? Any comments?
>
>  Jim   Armstrong
> Mk 1A
> 382002083
>  LRXFE
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http://www.theymightberacing.com/

1953 Studebaker Champion   1960 Austin Healey 3000 (BT7L/5479)
1974  Jensen Healey MKII (14291)   1974 Jensen Healey MKII (18854)
1978  Triumph Spitfire (Mum's)         1981 Triumph  TR8
1970 MG MGB                 1980 Triumph  TR7
"Human beings, who are almost unique in having the ability to  learn
from the experience of others, are also remarkable for their  apparent
disinclination to do so."
--Douglas  Adams
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