Gray Mikrosil™ is preferred by other toolmark examiners who photograph the contrast between the light-colored surface and shadows produced from side-lighting. Squeeze an equal length from each tube onto the mixing pad and stir them together with the wooden spatula. Press against the toolmark and wait for a few minutes. The hardened cast will easily release itself from the surface.

• Gray Mikrosil™ casting putty, 7 oz. (200g)
• Catalyst (hardener)
• Mixing pad
• Ten wooden spatulas