CABOSIL THICKENING AGENT – Fumed Silica (aka Cabosil) is an extremely fine powder used to thicken virtually every liquid material. It is typically used to thicken resin, paint, dyes, and even water. Also ideal to use as a thickener with Pros-aide to create Bondo transfers and Latex to form a Paste. It is great for making fillet putty, thickening epoxy for a better glue consistency, and for use below the waterline.
It is used in approximately a 1:1 ratio to the mixed resin by volume. This will provide a consistency similar to vaseline. You may use more or less to suit your application. It adds a milky white color to the resin.