BUICK 1964 Skylark Coupe Project

[joesregalproject]

Today I re-wet the test areas with Rust Mort, then scrubbed and then took the whole car outside and hosed it off to neutralize it. The Rust Mort did work, and it did great on the light surface rust, as you can see by the roof section and the passenger side of the package tray.

It did turn the darker rust black as it is supposed to but it didn't remove it as much as I hoped. The section of rust on the right is treated and the section on the left is untreated.

I'll give regular Ospho a try but from what I can tell based on the SDS and TDS, they are identical.

While I had the hose, I pulled all the body plugs and hosed down the car inside and out. I rinsed out a ton of muck from inside the trunk drop downs, the rockers and the doors. There was a whole mouse nest inside the drivers rocker.

 

[CopperNick]

In terms of what the active ingredient is, you're right, it being phosphoric acid. The main difference, from what I have learned through this thread, is that if you purchase the Oxalic Acid, the main ingredient, in powder form, and mix it with water to dilute it, you can increase the percentage by volume, and consequently the efficiency, of the solution, making it more effective in killing off the rust. For a supply of the Oxalic stuff, you may have to pay a visit to a chemical supply house or may be a Farm supply dealer.



Nick

 

[joesregalproject]

Busy weekend but I still carved out some time for the Buick. I removed the hood letters, the cowl panel, the wheel arch moldings, the front fender side moldings and the rear windows and regulators.

I bought a gallon of Kleen Strip Etch and Prep from Home Depot, I think it is basically the same thing as Ospho. It is not the same thing as Rust Mort. They look the same and have the same consistency, but Rust Mort smells strongly like vinegar. This stuff has almost no smell until it begins reacting with metal. I applied it opposite of the Rust Mort test areas and it seems to be stronger as it achieved the same results in less applications. However it still failed didn't get through the pitted areas.

So I began researching different options for cleaning metal. Media blasting is great except it is super messy and I am limited by my compressor. Then I saw this pressure washer wet blasting attachment from Eastwood.

Eastwood Dustless Liquid Media Blaster

Dust-Free abrasive blasting with your pressure washer

www.eastwood.com

It looked promising but I was hesitant to spend $100 on something that might not work, so I found a $30 knockoff on Amazon. It arrived today and I did a test on one of the inner fenders with some old glass bead media I had sitting around and it works really well. It would probably work even better if I had a dedicated 5 gallon bucket to siphon the media from instead of the cardboard box I was using. I don't know if I'd want to blast a whole car with this setup, but I'd have no problem blasting a core support or these inner fenders.

These spots took me about 10 minutes of playing around. I sprayed them with the phosphoric acid afterwards to prevent flash rusting. I'm going to pick up some coal slag or aluminum oxide media and I should have no issues cleaning any of the hard to reach areas on this car.

 

[Supercharged111]

Busy weekend but I still carved out some time for the Buick. I removed the hood letters, the cowl panel, the wheel arch moldings, the front fender side moldings and the rear windows and regulators. View attachment 216469
View attachment 216466
I bought a gallon of Kleen Strip Etch and Prep from Home Depot, I think it is basically the same thing as Ospho. It is not the same thing as Rust Mort. They look the same and have the same consistency, but Rust Mort smells strongly like vinegar. This stuff has almost no smell until it begins reacting with metal. I applied it opposite of the Rust Mort test areas and it seems to be stronger as it achieved the same results in less applications. However it still failed didn't get through the pitted areas.
View attachment 216468
View attachment 216467
So I began researching different options for cleaning metal. Media blasting is great except it is super messy and I am limited by my compressor. Then I saw this pressure washer wet blasting attachment from Eastwood.

Eastwood Dustless Liquid Media Blaster

Dust-Free abrasive blasting with your pressure washer

www.eastwood.com

It looked promising but I was hesitant to spend $100 on something that might not work, so I found a $30 knockoff on Amazon. It arrived today and I did a test on one of the inner fenders with some old glass bead media I had sitting around and it works really well. It would probably work even better if I had a dedicated 5 gallon bucket to siphon the media from instead of the cardboard box I was using. I don't know if I'd want to blast a whole car with this setup, but I'd have no problem blasting a core support or these inner fenders.
View attachment 216465View attachment 216464
These spots took me about 10 minutes of playing around. I sprayed them with the phosphoric acid afterwards to prevent flash rusting. I'm going to pick up some coal slag or aluminum oxide media and I should have no issues cleaning any of the hard to reach areas on this car.

Got a link for that Amazon thing? I want to try it out. Been thinking about getting some stuff dry ice blasted but if I can use my pressure washer I'd just as soon go that route

 

[pagrunt]

I'm going to pick up some coal slag or aluminum oxide media and I should have no issues cleaning any of the hard to reach areas on this car.

Not sure who would have it near you but they supply shop I was working at was selling Black Beauty in place of the sand they did carry.

 

[Streetbu]

I've used black beauty on heavily rusted parts and it works great. Might be a bit too coarse for that rust, especially on visible body panels.

 

[UC645]

Not sure who would have it near you but they supply shop I was working at was selling Black Beauty in place of the sand they did carry.

Tractor Supply carries coal slag from Black Diamond Abrasives.

If you run that, get the fine stuff, the medium sized stuff is at minimum .100 of an inch in diameter and will clog any abrasive gun that uses 1/2 hose or smaller.

 

[joesregalproject]

Got a link for that Amazon thing? I want to try it out. Been thinking about getting some stuff dry ice blasted but if I can use my pressure washer I'd just as soon go that route

Here it is. The hose is short so I'm going to go over to home depot and see if I can find a longer piece of PVC tubing.

Selkie Pressure Washer Sandblasting Kit - Wet Abrasive Sandblaster Attachment, with Replacement Nozzle Tips,Protect Glasses, 1/4 Inch Quick Disconnect, 5000 PSI https://www.amazon.com/dp/B086W4TNQC/?tag=gbody-20

Not sure who would have it near you but they supply shop I was working at was selling Black Beauty in place of the sand they did carry.

I've bought it from West Penn Laco in the past.

I've used black beauty on heavily rusted parts and it works great. Might be a bit too coarse for that rust, especially on visible body panels.

Yeah I know aluminum oxide is very aggressive. This glass bead i had laying around worked well, I can't even remember where I bought it.

Tractor Supply carries coal slag from Black Diamond Abrasives.

If you run that, get the fine stuff, the medium sized stuff is at minimum .100 of an inch in diameter and will clog any abrasive gun that uses 1/2 hose or smaller.

I've never used coal slag but it is cheep compared to everything else.

 

[ck80]

You know, you need this in your life to move this Skylark around....

https://m.facebook.com/marketplace/item/8768081829900233/

 

[CopperNick]

Ever given any thought to Soda blast material for doing that stripping? Way finer than Black Beauty.



Nick