Rust
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**It's caused by water in the air compressor line, as sand will harbor some moisture. Also, compressed air contains moisture. And, sand has salt in it.A moisture trap in the line should solve the problem with the water in the air line. | **It's caused by water in the air compressor line, as sand will harbor some moisture. Also, compressed air contains moisture. And, sand has salt in it.A moisture trap in the line should solve the problem with the water in the air line. | ||
**Even high grade epoxies and finishes are not 100% impermeable to water and air. | **Even high grade epoxies and finishes are not 100% impermeable to water and air. | ||
− | *POR is largely considered a " | + | *POR is largely considered a "duct tape fix". It may be OK for the home hobbyist, but it's not considered the "right way" or the "professional way" to handle rust. |
− | *Brands: POR-15, Zero Rust, Eastwood Rust Encapsulator. | + | *Brands: POR-15, Zero Rust, Eastwood Rust Encapsulator. These are not rust "converters", they don't alter rust, etc. They are a coating intended to seal out air and moisture. |
*One recommendation is: after sandblasting, remove some more of the surface metal by sanding with sandpaper. This is done to remove the salt, sand, moisture, etc. from the surface. | *One recommendation is: after sandblasting, remove some more of the surface metal by sanding with sandpaper. This is done to remove the salt, sand, moisture, etc. from the surface. |