Sand Blasting and Painting Implements and Trailers

[Egon]

Black is one of the hardest colours to keep clean. The off white will e much easier.

 

[blackrams]

Black is one of the hardest colours to keep clean. The off white will e much easier.

It's been my experience that black and white are the two colors hardest to get and appear to look clean. They obviously aren't any dirtier than the other colors but, they do show the dirt and grime more. The off white or almond won't show the dirt as much IMHO. Doesn't matter really, it's more about rust/corrosion prevention. This is a custom built trailer built to my specifications, the cost of not maintaining it or replacing it with another trailer built to similar specs would exceed any off the shelf mass produced trailers. I knew what I wanted when I had it built and it has served it's purpose for many years.

If the sand blasting vendor does his job and cleans up the corrosion currently showing (that I am aware of) and primes, paints it as well as the other work I saw at his facility, then I should have no problems for years. I will provide him with a lot of good free advertising with a good job. If he doesn't, I'll be sure to let anyone know.

I participate on four different internet forums, a car forum, a farming forum, a motorcycle forum and this tractor forum. There is a lot of potential free, good or bad advertising that could come from this project. I got a very good price due to a holiday special he was running. I've had a bunch of folks show interest in how this project turns out. Guess we'll see when I go back to TN to get my trailer back next week.

Rams :drink:

 

[Langanobob]

Don't use any type of acid products if you are planning to use epoxy primer unless you know how to properly neutralize the acid. If your project has seams or areas that the acid may be difficult to remove, it wouldn't be wise to use it at all. I wouldn't recommend acid for anyone that does not have a lot of experience with prep and paint work. The consequences can be disastrous.

I've been using phosphoric acid and epoxy primer for many years. The phosphoric acid is intended to be a paint prep product and it's always worked well. Maybe you are thinking of much higher strength acids?

 

[D2Cat]

Here's what I use and never had a problem with paint failing. Rust Inhibiting Coating SKYCO OSPHO 1 Gallon - Whitehead Industrial Hardware

 

[blackrams]

Here's what I use and never had a problem with paint failing. Rust Inhibiting Coating SKYCO OSPHO 1 Gallon - Whitehead Industrial Hardware

Well, shoot. Had I known about this product before I took my trailer to the sand blaster, I would have enquired about it. If it does as advertised, it would be well worth the investment. It is what it is. I'm normally a dollar short and a day late.

Rams :drink:

 

[Deere Dude]

Here's what I use and never had a problem with paint failing. Rust Inhibiting Coating SKYCO OSPHO 1 Gallon - Whitehead Industrial Hardware

I put that on my barn roof this summer. I had a bunch of rusted galvanized corrugated steel and it was super easy to brush on. Just like brushing on colored water. Hope it works like advertised. A few people I talked to said it will, but only time will tell..

 

[ray66v]

If you want to acid etch, and I highly recommend it, the easiest way is a spray on, vinyl wash primer. I do not prime bare metal without it.

I've sprayed hundreds of gallons of wash primer. And, nothing I have ever used it on has ever had any adhesion problems.

It's very economical. It only takes one thin coat, under a good epoxy sealer, to give you the best of both worlds.

Though they are constantly used over bare metal, most epoxy primers are NOT made for direct to metal application. The wash primer will make up the necessary bond coat.

Top coat with industrial enamel, (Rustoleum), in a wet on wet application. With some hardener in the top coat. The hardener will give you a molecular bond between the sealer, and the top coat, which increases chip resistance.

Industrial enamel takes forever to cure, (months), because of the cheap solvents used. But, it is very durable when it finally cures, if used as described.

Want faster gratification? Use the aforementioned automotive single stage urethane, instead of Rustoleum, for about 4x the price.

 

[Egon]

Keeping clean.
[video]http://www.best-auto-detailing-tips.com/car-paint-colors.html[/video]

 

[3Ts]

Ospho works. I ran a test in Florida. I had several light poles with a steel plate holding the lamp to the post. I did 3 of the steel plate with Ospho, followed by cold galvanizing spray paint, followed by an inexpensive top coat from a spray can. Another 3 I did the same way but left the Ospho step out. Results after 3 years: The ones with the Ospho showed no signs of corrosion. The ones without was showing the beginnings of corrosion. 7 years later (10 total) the ones with Ospho still did not show signs of corrosion. The others needed to be redone. I sold the house before I ever found out how long the Ospho protected them. I also found that after sandblasting, if you'll allow a very light coat of rust to form before applying Ospho, the Ospho works better. It appears to work by converting the iron oxide to iron phosphate which clings very tightly to iron whereas iron oxide (rust) just flakes off.

 

[Deere Dude]

Ospho works. I ran a test in Florida. I had several light poles with a steel plate holding the lamp to the post. I did 3 of the steel plate with Ospho, followed by cold galvanizing spray paint, followed by an inexpensive top coat from a spray can. Another 3 I did the same way but left the Ospho step out. Results after 3 years: The ones with the Ospho showed no signs of corrosion. The ones without was showing the beginnings of corrosion. 7 years later (10 total) the ones with Ospho still did not show signs of corrosion. The others needed to be redone. I sold the house before I ever found out how long the Ospho protected them. I also found that after sandblasting, if you'll allow a very light coat of rust to form before applying Ospho, the Ospho works better. It appears to work by converting the iron oxide to iron phosphate which clings very tightly to iron whereas iron oxide (rust) just flakes off.

I was unsure about using Ospho on my barn roof, but feel better after reading your post. Thanks.

I would not suggest the OP let his trailer rust up a bit after sandblasting. He would shoot me.