[DML] Re: Undercarriage rust/epoxy removal
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[DML] Re: Undercarriage rust/epoxy removal



It's been tried. The problem is that blasting won't cut the epoxy 
that isn's already loose from rust (at least not in a reasonable 
amount of time!). The epoxy is pretty amazing stuff requiring heat to 
let go, and just rubbery enough that the blast material sort of 
bounces off. Actually true sandblasting even has a hard time with the 
epoxy coating that's firmly bonded. That's what drives people to 
chemical or heat-based processes. If you are paying an hourly rate 
for such blasting and treatment, a replacement OEM frame (salvage) or 
even a stainless replacement frame gets pretty cost effective 
amazingly quickly. 

I've seen blasting used sucessfully to clean up the rusty parts, but 
if you want a completely clean frame to start with its not effective. 
There are also many boxed-in areas that you can't blast, and are also 
difficult any other way too. 

Iknow from experience that even a terribly rusty frame will still 
have a very high percentage of the epoxy very well bonded. 

Dave S


--- In dmcnews@xxxxxxxxxxxxxxx, "Gekko West Coast Base" <gekko@...> 
wrote:
>
> I have not seen any discussion of glass bead blasting of the 
undercarriage
> to remove epoxy and rust.  Has this been used and is/was it a safe 
and
> effective method of cleaning up the undercarriage of these cars?  
The glass
> is non-conductive, non-corrosive, non-dirt based so I would think 
that with
> proper pressure control and techinque, it would be faster, safer 
and more
> effective than sandblast, chemical or hand scraping.  Any 
experiences/ideas?
> 
> Thanx,
> 
> Craig
> 07181
>









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