Re: Sand Blaster Questions

Posted by david on October 11, 2002 at 06:20:53 from (205.204.242.23):

In Reply to: Sand Blaster Questions posted by TJ on October 10, 2002 at 13:05:28:

TJ,

We refinish at least a two dozen tractors in our ag mechanics program each year. I try to avoid sand blasting at all costs. Huge mess, sand in nooks and crannies (and engine/hydraulics). Silicates can also be a problem. If you sand blast indoors a lot of silicon gets into the air and I've never been able to paint in the same area where I've done a lot of sand blasting.

Steam clean, remove all sheet metal, wheels. Steam again. Sand (I like 240 with a D.A.) all steel parts, wire brush (brush in air drill) all castings, prime, wet sand, prime and topcoat over wet primer.

If I have to blast I use a Harbor Freight blaster with extra fine blasting sand and do it outdoors on removed parts only.

DAB

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