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Old 09-10-2005, 05:02 PM
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Should I etch prime under POR-15?

hey guys havent posted in a while. finaly bought a POR-15 starter kit. i wanted to know if it is best to put an etch primer under it or just use the POR-15. also would the POR-15 be the best thing for me to use on the frame for where my windsheild goes. its a bit pitted in areas. one more question, how is the por patch stuff if anyone has used it?
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Old 09-10-2005, 05:51 PM
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Definitely use the POR15 by itself. In fact, it works best on slightly rusted steel - bonds perfectly. When used on shiny rust free steel, it acts like any other paint and will chip off. Use it anywhere there is rusty steel that is still sound. Rusty body channels is a prime location to use the stuff.
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Old 09-10-2005, 09:04 PM
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do not prime under por15 just use their metal ready product
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Old 09-16-2005, 06:54 PM
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ive heard alot of stuff about por-15 so i decided to buy it and try it. but i still have a few more question that i would like to know before i go useing it.

~ Can i put bodyfiller over por-15?

~ If i can put bodyfiller over it than what do i do after i sand the filler and it sands into the por-15?

~ Do i reapply more in the areas that got sanded of?

~ Last but not least do i sand the por-15 flat so that my paint job comes out flat and not have paint brush strokes in it?
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Old 09-16-2005, 08:38 PM
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I wouldn't use POR15 under a fine paint job. It is a rust binder primarily so is intended for those places where the great looking paint won't be, frames, inside doors, window channels, floor boards, inside the firewall, etc. For the sheet metal, clean it to white metal, prime sand and paint it as you should. There are much better alternatives for bare, clean metal primers like epoxy. If you need POR15 on the sheet metal before painting, your metal is in pretty tough shape and should be de-rusted properly before proceeding with the finish.
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Old 09-16-2005, 08:39 PM
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~ Can i put bodyfiller over por-15? YES but you need to apply it as soon as the POR 15 is dry to the touch.

~ If i can put bodyfiller over it than what do i do after i sand the filler and it sands into the por-15? As long as you don't sand through to the bare metal no problem.

~ Do i reapply more in the areas that got sanded of? Not necessary unless you went all the way to bare metal.

~ Last but not least do i sand the por-15 flat so that my paint job comes out flat and not have paint brush strokes in it? You can sand it smooth if you like but POR 15 doesn't usually leave brush strokes because it flows very well. You can also spray POR 15 if you like.

I also agree with Willys and wouldn't use it under a fine paint job. It is best suited for frames, and under body areas.
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Old 09-17-2005, 08:59 AM
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If you spray POR 15 BE CAREFUL this stuff can kill you if you breath it. No need to be afraid to spray it just read the warnings and HEED them. POR is worse than ISOs in paint because it is moisture cured any that you breath can remain in your lungs forever. Whatever you do DO NOT spray this stuff without an approved respirator.
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Old 09-17-2005, 07:38 PM
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Quote:
Originally Posted by oldred
If you spray POR 15 BE CAREFUL this stuff can kill you if you breath it. No need to be afraid to spray it just read the warnings and HEED them. POR is worse than ISOs in paint because it is moisture cured any that you breath can remain in your lungs forever. Whatever you do DO NOT spray this stuff without an approved respirator.
I agree completely. I sprayed the frame on my '53 pickup with POR-15 but I did it outside and used a particle mask. Worked very well actually. If I was spraying it inside I would definitely use a respirator.
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Old 09-17-2005, 09:27 PM
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I Sprayed It With A $20 Detail Gun I Got At Harbor Freight Worked Fine Used A Paper Mask Out Doors . Its Uv Sensitive It Comes Out Gloss Black Needs A Topcoat According To My Local Paint Shop Smittys
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