 4dr 57
"6th Year" Silver Supporting Member
Posts: 2738
Loc: The Texas Hill Country
Reg: 11-10-04
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05-06-12 06:32 PM - Post#2223243
I just read a poster asking about a rusty floor and all the responses were about using POR.
Doesn't anyone use Ospho any more? Why not? Thanks.
Stan
| Wife: "Don't race the Police car, Stan!" |
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56sedandelivery
Valued Contributor
Posts: 2551
Age: 61
Loc: Everett, Wa.
Reg: 02-26-08
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05-06-12 06:47 PM - Post#2223251
In response to 4dr 57
Ospho comes in rust remover, and rust converter applications. The POR-15 is "more" like the rust converter, but is used to seal the rust primarily; that and to build up weakened, rusted, pitted metal (think along the lines of a fiberglass resin). Without a rust converter, rust continues to do it's damage. POR-15 is also used to prevent rust, by being a barrier to moister. With the nephews 51 Bus Coupe, we used a fiberglass resin, and 1/8" thick rayon type matting to strengthen his pitted floors. Hard as a rock, and solid now, and he's painted the entire floor in red primer. Better than the chicken wire and roofing sealant I found in one car I bought many years ago (63 Ranchero). Butch/56sedandelivery.
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4dr 57
"6th Year" Silver Supporting Member
Posts: 2738
Loc: The Texas Hill Country
Reg: 11-10-04
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05-08-12 06:31 AM - Post#2223715
In response to 56sedandelivery
ok, Thanks 
The best rust proofer I've found is Etching Primer over bare metal. I think a lot of new car Mgfrs. still use and recommend this process, although even some good restorers will argue for epoxy primer over bare metal. oh well
Enjoyed your bio. Got any posted pics of your SD 
| Wife: "Don't race the Police car, Stan!" |
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rons50chev
Forum Newbie
Posts: 99
Reg: 04-19-12
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05-09-12 07:01 PM - Post#2224318
In response to 4dr 57
I have never heard of ospho what it it and where can I find it thanks. Ron
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 Tgoss
"3rd Year" Silver Supporting Member
Posts: 136
Loc: Brunswick Georgia, USA
Reg: 02-08-05
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05-10-12 01:18 PM - Post#2224515
In response to rons50chev
Ron, ospho is the brand name for phosphoric acid. I just bought a gallon jug from Home Depot but it was under a different brand name. Just ask for phosphoric acid in the paint department in Home Depot. Tom
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Mike JW
Contributor
Posts: 911
Loc: Arroyo Grande, CA
Reg: 01-19-06
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05-10-12 04:46 PM - Post#2224580
In response to Tgoss
Ospho, is great stuff, just be sure and ware rubber gloves and some eye protection. First time I used it about 25 years ago I was working on a 36 Ford sprayed the under side of the car with it. Where ever it dripped on the concrete floor it ate the concrete up. Be careful with it. burns the hell out of skin. Ask me how I know. Good luck Mike
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