[AT] Classic Blast

[james deardorff]

Dear ATIS
Received your comment on the problem with walnut shell plugging oil passages, ect.  
Abrasvie contamination is always a concern for anyh type of snadblast operation.  This is why there such a good market for the baking soda blasters.  I rarely have a problem with my blasting process for the following reasons.  
-I use low pressure 35 to 45 psi
-I have developed a very good masking system to protect no-blast parts
-I feel there is very little impact loss of the walnut shells at low pressures
-I recommend that car, tractors, ect be taken completely apart for the best results
-I recommend that after blasting is completed, the parts be washed down with a 
   soluble salt rinse (I use Chlor-rid).  This removes abrasvie particles, paint dust, 
   and sulfates that result from exhause funes espcially in diesel engines. I mix 
   Chlor-rid one part to 100 parts with water.  This will not produce rust in metal for more
   information on chlor-rid see www.chlor-rid.com
 
Jim Deardorff


		
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