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...unless you use a very fine pencil tip on your blaster and switch to soda media. The soda is super fine and works well with tiny orifice holes, leave the sand for the bigger guns. Soda does a very nice job on rust since it penetrates deeper into the pits and is gentler on the material, burning through is nearly impossible with soda.
Give it a try and see if your compressor can keep up at 90 psi with a fine tip.
Little tip, the Arm and Hammer soda at the grocery store is the same thing you get bulk.
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Outlawed tunes from outlawed pipes
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