Mixing types of epoxy

[rvanstory]

Working on fiberglass top. Used Aeropoxy Light in corners and to blend in the overhead console. Got it looking pretty good, but would like to mix epoxy with micro in a thinner mix in order to smooth out some details even more.

Is there any reason you cannot apply epoxy/micro mix on top of Aeropoxy Light? I didn't know if they have different characteristics that could cause problems down the road.

 

[DanH]

Working on fiberglass top. Used Aeropoxy Light in corners and to blend in the overhead console. Got it looking pretty good, but would like to mix epoxy with micro in a thinner mix in order to smooth out some details even more.

Is there any reason you cannot apply epoxy/micro mix on top of Aeropoxy Light? I didn't know if they have different characteristics that could cause problems down the road.

No adhesion issue, assuming you sand or otherwise roughen the Aeropoxy prior to application of the epoxy/micro.

That said, it's generally a bad idea to do a patchwork application of materials with two different sanding densities. The soft one cuts easily, the hard one does not, and the result is a wavy surface, despite heroic block sanding. That pushes the builder (or painter) into multiple shoot and sand sessions, blocking high-build primer to get it flat again.

A premixed epoxy filler will generally cure soft and easy to sand, while wet micro (a runny epoxy/micro mix) will cure hard.

 

[rvanstory]

Hadn't thought of the hard VS softer material. Makes perfect sense! Thx for saving me the learning lesson!

 

[lr172]

go get some glazing or icing. It is a poly filler that is thinner than std poly filler for applying final coats and the type of work you are doing.

Larry

 

[jacoby]

go get some glazing or icing. It is a poly filler that is thinner than std poly filler for applying final coats and the type of work you are doing.

Larry

Evercoat Easy Sand. Throw in some Dura-Blocks and guide coat and you can get a glass smooth finish. Or go crazy trying!

I've also used their Slick Sand product but you need a large tip spray gun to apply it. The pot life is nothing to stretch out either. It's efficient for large areas (I did a whole car) but has a pretty hard outer layer that you have to break through.