Sand blasting works so well. After all the wash and sanding I use a steel brush for the final cleaning and that cleans the edged of the perforations real well. Then soap wash and final rinse in DI water, dry and paint.
I saw a hand held laser beam on you tube that can remove rust so well. That looks very interesting!
I scrubbed them with a toothbrush for the most part and some spots I had to wet down a little with windex and scrub and q-tip to really get the funk off.
It's hard to say how it sounds with the Lasonics because the sound is compromised already on this blaster. If you have to compare Lasonic woofers to original M90 woofers, there is no comparison. M90 woofers outblast Lasonics.
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