The Easiest Brushable Urethane To Mix!

After the 2nd layer is tacky, mix Parts A and B with Ure-Fil 9 to thicken the rubber. The thickened rubber can be used to create a 'cut shim' and fill in undercuts. Add So-Strong color tint to provide contrast to the cut seam, which is applied along an edge to minimize any seam that may be reflected in finished castings. Extend the cut shim to the outer edge of the flange. Mix another batch of Ure-Fil 9 and rubber and use to further build up the cut shim.