Chassis Paint Treatment
I have decided to rustproof the chassis before painting it with Rustbuster products - winners of the Practical Classics Best Buy Award 4 times. From left to right we have 2 aerosol cans of Dinitrol 3125 - A chassis wax that can be sprayed in to cavities and box sections. The long nozzle extension is to get right up in to the box sections and it acts like a 'mushroom spray'. Next is the 2 part Weld Thru with thinners. This lets you prime areas that will be boxed in and give them a good coating before welding adding another layer of protection in difficult areas. Lastly we have the Epoxy Mastic 121. This is an epoxy protection that dries a satin finish and self levels in an uneven surface. You could leave this as your paint finish but as I like a little bling I will be using a gloss 2 pack black on top. You can check out Rustbuster here. Below you'll find a few more pics and what Rustbuster say about their products.
"It gave the best anti-corrosion results with no visible signs of rusting along the panel or the score mark - tough enough for a stand alone chassis coating" - OnTest Vedict in Practical Classics March 2Epoxy Mastic is a high build, high solids two pack (has a base and hardener) Epoxy paint coating for the renovation and protection of rusting and pitted steel exposed to severe environments. Epoxy Mastic can be applied successfully over wire brush cleaned steel and still offers the same exceptional performance as coatings applied over blast cleaned steel. Its finish is as hard as iron but flexes with the steel. See photo,s at the foot of this page of a customers VW restoration.
Epoxy Mastic will not flake, peel or blister - even under water. Resists oils, salt water and mechanical damage. Tough penetrating coating that is more flexible than the steel itself. Has six times the penetration and adhesion of single pack products. Does not contain any harmful isocyanates.
So how does it work?
Epoxy Mastic is a two component Epoxy paint composed of nanoscale corrosion protective pigments in short chain molecules with very low surface tension.
This allows the paint to flow into all of the pits and troughs on the steel's surface, ensuring a tough penetrating primary bond.
This is the best kind of bond you can get with a paint finish.The high build epoxy forms a super strong protective barrier over the corrosion inhibiting pigments that hug the steels surface Excellent penetration and adhesion within a high build coating equals exceptional mechanical strength.
Why can't other paints do this?
Single pack paints (paint without hardener) used to protect steel against rust are the most common products. These products have standard sized pigments bound in long chain molecules and as such tend to lay over the pits and troughs on the steel's surface because of their high surface tension, the larger pigments are not able to collect to form a tight pigment matrix. This allows voids to form beneath the paint's surface,the thin film of the coating is not able to offer sufficient barrier protection over the high points on the steels profile, rust pockets form in the voids, the paint blisters and moves onto the next void and so on. The system flakes, peels and blisters.
This scenario cannot happen with Epoxy Mastic using a primary bond. They also tend to have less solid content. This means that the peaks on the steel's profile are soon exposed to the atmosphere and once again rust forms in the void and the system breaks down. Epoxy- Mastic's high solids content of 83% means that the finished dry film thickness is on average 30% thicker than the best single pack paints available.
What is the finish like?
Epoxy Mastic can be brush or spray applied like any other paint. It is supplied with Epoxy thinners to reduce viscosity when painting smaller components. It can be painted over or left alone.
It really is the complete answer, a high performance paint finish that has no equal. It's iron hard when cured but more flexible than the steel its coating. By spray the finish is flat and smooth. By brush or roller you may see some application marks.