Originally Posted by
TerraWombat
I can attest to the durability and effectiveness of POR-15. I bought their "starter pack" about a year ago to use on an old, rusty trailer that was sitting in some weeds in my backyard and the results were amazing. I brushed it on to eliminate wasting paint due to overspray (POR-15 isn't cheap) and like millman said, the brush marks are non existent. This stuff also goes on THICK and covers very well so you can usually get away with a single coat. Be warned that it is light sensitive and its color will dull if left in direct sunlight, but its corrosion/rust protection properties remain.
I bought it to use on a truck dump body. POR-15 recomends the primer be top coated with another product to protect from sun damage.
The primer WILL NOT remove from skin if it dries there either. You literally have to wear it off.
POR 15 might be overkill for a plasma table in general but for a water tray..... Build it set it outside & let turn orange from light rust & REMOVE ALL MILL SCALE. Dry off & coat with POR-15 primer. I think it would be a nearly forever finish.
If it works.....Don't fix it!