Rust Kutter - Stops Rust and Converts Rust Spots to Leave A Primed Surface Ready to Paint, Professional Rust Repair Manufactured in USA – Sprayer Included

This stuff is amazing, bar none. And really, the price isn't bad when you consider the price of buying the ingredients separately and mixing it yourself would only save you a few bucks per gallon and probably not work as well. Basically this consists of ~%35 phosphoric acid, ~%5 citric acid, and some surfactants (alcohol and NP9.5) to help the solution penetrate the rust and scale. The citric acid helps dissolve the loose rust and make it water soluble, and the phosphoric acid reacts with the rust (iron oxide) converting it into iron phosphate, which is actually an anti-rust coating that is commercially applied to some steel products. If you prep properly by removing the loose rust and paint and making sure the surface is free of oils, you'll end up with all the rusty brown spots turning a satisfying black color, and the excess acid drying up to a white powder. Then you just rinse off the excess and optionally paint to protect the bare steel that didn't get converted. I bought this after watching a YouTube video that compared most of the "rust converting" products on the market, including the primers, aerosols, and acids. This blew the competition away. I had to try it for myself and I'm glad I did! You should wear gloves and eye protection while using it, as while it's the consistency of soapy water and comes in a household spray bottle, the spray will definitely sting your eyes, and if some spray dribbles out of the bottle onto your hands you can feel it dissolving the top layers of your skin like bleach (your fingers get slippery). However, it doesn't stink and it washes off easily with water. Note that this is not a "quick fix", the solution takes one to three days to convert the rust, and on heavily rusted objects you may need to apply two or three times, allowing the solution to dry in-between. But the results are amazing. My bottle saved a totally trashed wheelbarrow, protected another wheelbarrow that was starting to rust in the basket, fixed up my super rusty cast iron digging bar that I've had to previously grind every year, and cleaned up a bunch of rusty lug nuts, wheel mounts, and rims on an old car. And I still have 1/3 bottle left. I still plan to paint most of those objects for extra protection, but I'm a believer and will definitely be buying this again in the future. Now if you'll excuse me, I have some rusty lawn furniture and tools to hit next.

Works very well. On heavy rust you need multiple applications. Allow 24 hrs per application. Allow final application to sit 72 hrs. Scuff, clean with wax n grease remover /lacquer thinner or the like and prime/paint.

First, the actual product itself works great. I sprayed it on a few rusted areas on our car, and the light surface rust vanished and the heavier rust turned black. A few weeks later, I went to try it on another vehicle's rust, and nothing was coming out of the sprayer. After a few more minutes of pumping, the liquid started pouring out of the side of the sprayer, all over my hand and arm (FYI, this stuff BURNS when it gets on your skin). I washed off the sprayer, and removed the cover to discover that part of the sprayer tube had snapped (see pics). This is a very bad design because when ever you rotate the on/off end, it puts stress on the long "tube" part that connects to the main "pump" part. Also, when you pull the pump trigger, it also puts stress at the same point. The result, the plastic snaps at the weak point. I thought I could maybe super glue the pieces back together, but super glue won't bond to the plastic, at all. So, I now need to find a new spray bottle that the product won't eat through, or a new sprayer top that fits the original bottle.

It works. Very thin so spreads great and goes far.

It eats through rust so it wipes off easily with a scouring pad. No elbow grease needed.

Nice easy application. I used spray and brush on a very rusted snow blower. It converted the rust but also peeled an existing cheap paint job at the wire brush marks and along bare edges of the paint. Needed 2-3 applications due to the amount of rust so I ended up having to chase peeling and blistering paint. Had to finally call it good but had no intention of chasing so much bare metal. Be careful with a wire brush on nearby paint. You have to be patient with applying, rinsing and drying.

Incredible product! Works wonderfully!

Works well on rust . Still working with the rust remover on the trailer. Good in tight spaces and crevices.

While this is expensive then it has done its job very well thus far. Have used it over few years and most of it is still left: you don't need much for smaller areas. Another funny thing is that it doesn't evaporate: even a tiny amount will remain in the container where you used it from. So remember to use up all of it or pour what's left back in the bottle.

Me gusta este producto mucho. 👍

This is one of the best rust remover I've tried, the rust won't come back and it's not a paint that only hide rust, this is the real stuff!

Works as well as per my research before purchasing, can also be painted on the next day. Expensive but worth it overall.

Used it on a rusty civic and omg it Works a treat best rust remover/treatment iv ever used RECOMENDED