This mold making tutorial movie demonstrates how to make a brush on mold of a 3 dimensional design applying Brush On 40 urethane rubber.
Stage one: Glue design to foundation.
Stage 2: Utilize SuperSeal sealing agent to all surfaces.
Stage 3: Utilize Universal Mold Release to all surfaces.
Stage 4: Effectively evaluate Pieces A & B. Dispense equal amounts of Brush-On 40.
Stage five: Mix mold rubber.
*** Mold Maker’s Tip: Colour pigment just about every other layer. This ensures complete coverages and assistance prevent skinny places in the mold. ***
Stage six: Utilize mold rubber. Very first layer, or “element coat” is utilized thinly. Thrust or stipple rubber into element. Mix and apply much more substance as needed.
Stage seven: Enable rubber to gel until “tacky” (30-40 minutes at space temperature). “Tacky” indicates sticky to touch but does not come off design.
Stage 8: Mix and apply next layer of rubber.
Stage nine: Enable rubber to gel until tacky.
*** Mold Maker’s Tip: Thicken Rubber with Cab-O-Sil or URE-FIL nine. Use thickened rubber to make parting shims. ***
Stage ten: Add Cab-O-Sil to thicken rubber. Use thickened rubber in undercuts and indentations. Use thickened rubber to build registration keys.
Stage eleven: Mix and apply third layer of rubber. Mix and apply much more rubber as needed.
Stage twelve: Enable rubber to gel until tacky.
Stage thirteen: Construct up parting shims and undercuts.
Stage 14: Mix and apply fourth layer of rubber.
Stage fifteen: Permit all levels cure right away at space temperature.
Stage 16: Making use of the help shell or “mother mold.” Reason: delivers rigid help to flexible rubber mold throughout casting. Attract parting strains. Use modeling clay to make help parting shims. Utilize clay supports to other side. Fill in any open up spaces and easy clay pieces jointly. Total clay shim all-around design. Utilize clay supports on other side.
*** Mold Maker’s Tip: Use sculptor’s instrument or paper clip to carve registration keys into clay. ***
Utilize Sonite Wax about rubber floor, clay shims and foundation. Utilize Universal Mold Release. Measure and mix Plasti-Paste II. Mix ratio: 1A:2B by volume. Mix totally. Utilize Plasti-Paste II to mold rubber. Permit cure about 90 minutes.
Up coming Stage: Take away clay shim. Use clay to make next parting shim. This defines the next and third shell segments. Utilize clay supports and easy edges. Utilize Sonite Wax. Utilize Universal Mold Release. Measure and mix Plasti-Paste II. Permit cure about 90 minutes. Take away clay shim. Utilize Sonite Wax to Part 3. Utilize Universal Mold Release. Measure and mix Plasti-Paste II. Permit cure 90 minutes.
Stage seventeen: Demold. Take away shell segments. Take away rubber mold from design. Use razor knife to lower seam. Fantastic element is captured from the original design.
Stage eighteen: Ready to cast. Utilize Universal Mold Release to all surfaces. “Seat” mold into shell making certain seam is aligned. Secure mold with straps or rubber bands. Mix and pour duoMatrix NEO into mold cavity. Mix ratio: 2A:1B by volume. Add much more duoMatrix NEO as needed. Permit all levels cure for about one particular hour.
Stage 19: Ready to demold. A perfect lightweight reproduction.
Make It Now! with Smooth-On
Post time: 03-14-2016