Devlin Designing Boat Builders - The Devlin Store

Fillers & Additives

Fumed Colloidal Silica (also known as CAB-0-SIL)
For use when an extremely hard solid with high density is needed, i.e. structural bonding, filling and filleting. A small amount of Colloidal Silica ( about a tablespoon per 4 ounces) will add strength to a top coat but still finish absolutely clear. The white color in the mixing cup will disappear when it cures.
Milled Fibers (1/32" milled fiberglass)
For use when epoxy must fill a void and provide extremely high strength and resistance to cracking (i.e. structural filleting, bonding of hardware, and keel bedding).
Phenolic Micro Balloons (organic phenolic hollow spheres)
For use when low density, light weight sandable paint-ready surfaces are required, i.e. when fairing.
Wood Flour
For use when a hard solid for filling and filleting is required.
Cell-O-Fill - - NEW for 2008!
Derived from all natural alpha cellulose, the fibrous ribbons create a matrix with the epoxy and help reduce sagging and slumping. Used in place of Colloidal Silica, it will not billow in the air like silica and you will need half as much to create the same thickness. There are no health hazards associated with Cell-O-Fill and International standards consider it a nuisance dust.