[DeTomaso] thick metal spray on Fontana block?? Help?

[Daniel C Jones]

I had a set of A3 high port heads like that.  Iron filings in some sort of
a epoxy base to fool the magnet.  I used wire brush wheels on a high speed
hand held die grinder.  Took some experimenting with the wire material and
coarseness but I was able to get it all off.  I used some special pinky
diameter brushes to get into tight spots.  The surface was somewhat
smoother than "as cast" when I was finished.  I then scrubbed the surface
with red Scotchbrite 3M pads soaked in PPG DX-533 (a phosphoric acid based
aluminum cleaner and pre-paint conditioner).  Hose it off with water and
blow dry or it will water spot.

Good Luck,
Dan Jones

On Fri, Sep 11, 2015 at 3:54 PM, Ed Mendez <edducati at mac.com> wrote:

> Anyone have any idea how to get this metal spray coating off my Fontana
> block? It is some sort of metal spray coating to fool people into thinking
> it is an iron block when in fact it is an aluminum block. The coating is
> magnetic.
>
> The machinist in Downey, CA, says after hot tanking this is what it now
> looks like, the power coater won’t touch it due to liability, a sand
> blaster won’t touch it for the same reasons. I was thinking walnut media
> blasting?
>
> How do I get this crap off? Grinding? but that will screw up the finish…
>
> Any help would be greatly appreciated.
>
> Ed
>
> Ps. If you don’t get a picture I will send to you directly, something up
> with Mac mail and our mailman server.
>
>
>
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-------------- next part --------------
   I had a set of A3 high port heads like that.A  Iron filings in some
   sort of a epoxy base to fool the magnet.A  I used wire brush wheels on
   a high speed hand held die grinder.A  Took some experimenting with the
   wire material and coarseness but I was able to get it all off.A  I used
   some special pinky diameter brushes to get into tight spots.A  The
   surface was somewhat smoother than "as cast" when I was finished.A  I
   then scrubbed the surface with red Scotchbrite 3M pads soaked in PPG
   DX-533 (a phosphoric acid based aluminum cleaner and pre-paint
   conditioner).A  Hose it off with water and blow dry or it will water
   spot.A
   Good Luck,
   Dan Jones

   On Fri, Sep 11, 2015 at 3:54 PM, Ed Mendez <[1]edducati at mac.com> wrote:

     Anyone have any idea how to get this metal spray coating off my
     Fontana block? It is some sort of metal spray coating to fool people
     into thinking it is an iron block when in fact it is an aluminum
     block. The coating is magnetic.
     The machinist in Downey, CA, says after hot tanking this is what it
     now looks like, the power coater wonat touch it due to liability, a
     sand blaster wonat touch it for the same reasons. I was thinking
     walnut media blasting?
     How do I get this crap off? Grinding? but that will screw up the
     finisha|
     Any help would be greatly appreciated.
     Ed
     Ps. If you donat get a picture I will send to you directly,
     something up with Mac mail and our mailman server.
     _______________________________________________
     Detomaso Forum Managed by POCA
     Posted emails must not exceed 1.5 Megabytes
     DeTomaso mailing list
     [2]DeTomaso at poca.com
     [3]http://poca.com/mailman/listinfo/detomaso_poca.com
     To manage your subscription (change email address, unsubscribe,
     etc.) use the links above.

References

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   2. mailto:DeTomaso at poca.com
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