| www.smooth-on.com to learn more about concrete casting. Casting a reproduction concrete sink basin by making a 2-part Vytaflex production rubber mold. Step One: Construct Mold Box Measure original sink basin. Use melamine board (formica coated) to make mold box segments, which will ensure easier separation from mold rubber. Step Two: Create Spacer Board Center model on board to use as a spacer board. Create perimeter outline for cutting. Center model on baseboard. Position spacer board and align with baseboard. Mark alignment point on baseboard and spacer board. Use modeling clay to create a gasket. Use non-sulfur based clay only. This will prevent rubber from going underneath model. Modeling clay will fill negative space between original model and spacer board. Remove excess clay. Step Three: Acorn Nuts will be Used to Create Registration Keys Hot melt glue will be used to secute acorn nuts. Place extra key for mold orientation. Step Four: Assemble and Seal Mold Box Screw melamine boards together with dray wall screws. Seal seams with hot melt glue. Step Five: Release Mold Box and Model Apply Universal Mold Release to all surfaces. Step Six: Measure, Mix and Pour VytaFlex 40 Mold Rubber VytaFlex 40 mix ratio: 1 part A to 1 part B by volume. Measure, mix, and pour the liquid rubber. Do not pour beyond sink hole. Let rubber cure for 16 hours at room temperature. Step Seven: Prepare to Make Second Half of Mold Use non-sulfur clay to fill in surface irregularities. Measure ... |
