Sandblast or Wire wheel Frame?

Coat of Por15 didn't last more than a few months of an Alberta winter and peeled/flaked off. Bunch of surface rust starting to form. Gonna jack the truck up and thinking of either buying a small portable sandblaster to do the frame, or the other option would be to wire wheel & angle grind it off. Is one better than the other? Then will apply a coating + additional layer fluid film.

 

just fluid film the surface rust, the por15 is not helping its hurting. its trapping water, the fluid film should be as close to metal as possible.

 

My experience with cheap sandblasters (<$100) has been very poor and you need a 30gal+ compressor to keep up with a job like that... and it's going to make a massive mess. You'll definitely want a respirator.

I'd actually do a combo of flap discs and silicon abrasive wheels.

Like @saint277 said, fluid film is the way to go and por-15 has been known to trap moisture. Hell, rustoleum is probably better.

 

Steel-it paint worked pretty well for me this past winter, then use fluid film over it.

 

Sand blast and use Eastwoods rust encapsulator followed by their top coat frame coating. It resists UV rays and is superior to POR 15 in my opinion and easier to apply. Its all about the prep work. The areas on the frame I did over a year ago still look new.

 

I am looking to remove surface rust, and coat the places that have surface rust so that the rust doesn't come back. I originally thought I was gonna sand the entire underbelly of the taco just a good 2 days of straight sanding until I am satisfied, and once everything is to my liking I would coat with POR-15. Or so that was my game plan bc I really want to maximize this Tacomas life. But now that I've heard that POR-15 actually is not good, im not to sure what to do anymore. What is the best product to use...

 

oil based undercoats are the way to stop rust, you don't need to remove surface rust. Oil based undercoats absorb into rust and stop it from spreading. apply twice a year with Fluid Film, cosmoline or some other similar product.

 

Sounds good. Couple questions I am still new, what are some good oil based undercoats that I could use, and how would I use it with another coating product like fluid firm? like first the oil based undercoating, and then after that has set, I apply the fluid firm????

appreciate the explanation and help

 

so fluid film does not harden, it stays fluid like and creeps into all the nooks and crannies that rust likes to hide in. You apply fluid film before winter, and after winter you look at the undercarriage of your truck and touch up any places its washed off, repeat before the next winter. There is no premiant solution to rust, it is a constant battle.

 

Any small portable sandblaster I ever tried was 1) worthless and 2) required giant amounts of air for the little amount of work you got done.
If you have a typical homeowner type compressor you will be working it way too hard.

"Sand" is actually hazardous to your health -- silicosis. If you go that route make sure you have a proper rated respirator for the job.

 

I'd go with a combination of wire wheel and stripping disks, followed with a rust converter/inhibitor and coated with por15 or similar. If you're in a rust state, fluid film yearly.

 

Cheap Media Blasters are a waste of money!!

Clean the surface the best you can get all the loose flakes off Prime and Paint Fluid Film every fall.

 

I'm currently wire wheeling the rust, converting with Rust Kutter (phosphoric acid) and then painting with black spray paint. I'll fluid film everything once I'm done. I'm only painting for looks on the rear differential, the rust kutter makes it look shitty. See pic.

 

I've been debating this as well. as mentioned you need at least a good CFM compressor to keep up with the media and that's going to run you several hundred, plus a decent sand-blasting setup which is another couple hundred

I think I've resolved down the wire wheel flap disk route myself as it will do most of the work and cost significantly cheaper. I am actually looking at a product from KBS that's got some good reviews.

I may just have to wait for the wheels to get blasted when I need new tires in a few years

 

In the past I've had great luck with Por 15, but it has to be on rust itself or it peels off. It chemically bonds to rust but will not adhere to paint or any smooth surfaces for long. It's very thin too, I always liked to fill the rusty cavity of the frame and see it come out of the holes. The other spots that had paint left I would scuff up a bit and brush on semi gloss Rustoleum black or use fluid film. But, even my replacement frame seems to be made of crap recycled metal and I probably need to get under there and get it coated...