How to convert rust inside a Box Chassis Frame: Boroscope, 90° long Pliers, Phosphoric Acid Gel Time

"early 20th century: from French châssis ‘frame’, based on Latin capsa ‘box’ (see case2)." In Spanish "box" is Caja - fascinating!!
I hit a limit where I was creating NEW rust after I had converted the old rust. Because the phosphoric acid on plain metal creates rust while the phosphoric acid on rust converts it to iron phosphate. Since I could not precisely control the direction of the spray of the phosphoric acid - then I was converting as much rust as I was making new "surface rust."
So I had to stop but my final rust conversion spray was with the RustMort pint - that is expensive since it is 80% concentration! I wanted to make sure I converted as much rust as possible....
So now I will just rely on the "rust converter" spray paint - which with Rustoleum is a zinc oxide layer that creates it own zinc rust layer - to prevent any new rust.
The Eastwood Rust converter spray paint has a weak tannic acid in it that is to convert any remaining rust on the metal. So that will come with the internal frame spray wand - that also goes with the Eastwood internal frame coating paint. That paint has mineral oil in it to "cover" the rust.
Finally I then will apply the SEM Wax "Rust Preventer" that comes with the 360 degree Aerosol Wand. That wand is no longer produced but I found one in stock online. So that wand will attach well - unlike another product of wax in a spray can - with a wand. That other product, the reviews say, has the wand LEAK HALF of the wax. I just had that messy experience trying to use the Eastwood wand on the Rustoleum Rust converter spray can - so the wand attachment is a critical key component - it has to fit perfectly.

[voidisyinyangvoidisyinyang]

OK I just ordered an SEM 360 degree wand that I had used before - it's not made by SEM anymore - so I found a distributor that still had one in stock. Then I ordered their SEM internal frame wax coating spray. So I know their 360 degree wand does fit well on the spray can.

[voidisyinyangvoidisyinyang]

Then I ordered the Eastwood Rust Converter (with tannic acid) and the Eastwood internal frame coating paint (with naptha mineral oil). That also comes with wand sprayer. That is the SAME wand sprayer I just tried to reverse engineer into a Rustoleum rust reformer spray paint can. haha. I made a mess! but as I already posted - that Wax wand sold also makes a mess on the KBS product. So I don't feel so bad about making a mess - their wand WILL fit their own Eastwood spray cans.

[loveyahshayah]

I like harbor freight 😁 some stuff breaks but good return policy. Anyways be careful w that acid. Got a mini fight club acid burn. That prob hurt. Thanks for sharing 🏄

[rebornkingofthule]

Careful they got lifts so they can lift the car up to like your shoulder level.
They also have the original specs on the car. Half the time it's some one who literally used to work at a dealership anyways.
So they can take apart all the pieces around it pretty easy.
You try to do that on the fly you're going to be there for like 10 hours and you got to remember exactly where every screw came from.
Endless it's one piece an it's visible like a brake pad or oil change I don't touch it.
Literally been stuck with like seven backyard mechanics switching an engine on a Honda or Acura.
To me that was like some version of a limbo before hell haha. Just wiggle it another dozen times till it fits on the bolts it's not fitting on lol.

[voidisyinyangvoidisyinyang]

Klean Strip Concrete and Metal Prep is 30% to 60% phosphoric acid - so I just sprayed that into the inside of the frame since the Rust Dissolver is 25% to 50% phosphoric acid and it didn't seem to be getting the job done. I'm not sure if the phosphoric acid is CREATING rust by sitting on the metal with the water in the gel. I don't think so. I may have to get the 1 gallon food grade phosphoric acid at 80% concentration....

[rebornkingofthule]

Even on these YouTube videos by professionals so called.
When they're taking stuff apart half the time they fast forward the video and they don't show you what they're doing.