[Charles in SC]

Is Cabosil a solid that stays that way or something that dissolves in the resin?

 

[RV6_flyer]

Is Cabosil a solid that stays that way or something that dissolves in the resin?

Cab-O-Sil is nothing but fumed silica used as a universal thickening agent.

When the Epoxy Resin cures (dries) it and the Cab-O-Sil will be hard.

 

[Charles in SC]

Is Cabosil a solid that stays that way or something that dissolves in the resin?

Thank you! Is Cabosil a solid that stays that way or something that dissolves in resin? I know the mix becomes hard when the resin set up.

 

[G-force]

Its a white powder that is mixed with resin to thicken it up, it doesn't dissolve. The more you mix in, the thicker it gets. Then the resin hardens, trapping the cabosil inside.

 

[Charles in SC]

The reason I ask this is because it seems to disappear after being mixed for a few minutes.

 

[BobTurner]

The reason I ask this is because it seems to disappear after being mixed for a few minutes.

On a microscopic scale the Cabosil is rough, so to your eye it has a 'frosted glass', or white, appearance. But once wetted, the index of epoxy and Cabosil are close enough that there is little reflection, so it's very hard to see.

 

[Charles in SC]

On a microscopic scale the Cabosil is rough, so to your eye it has a 'frosted glass', or white, appearance. But once wetted, the index of epoxy and Cabosil are close enough that there is little reflection, so it's very hard to see.

Thank you! I could not figure out how it could disappear if it did not dissolve.