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Smooth-On Silicone Mold Making, Liquid Rubber OOMOO 30, Easy to Use - Trial Size 2.8 lb
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- MIX RATIO: 1A:1B BY VOLUME - Easy to use silicone rubber compound features a convenient one-to-one by volume mix ratio, no scale is necessary
- SHORE A HARDNESS: 30 - This scale measures the hardness of flexible rubber molds. A 30A hardness is in the soft to medium soft range, between the flexibility of a rubber band and pencil eraser
- POT LIFE: 30 MINUTES, CURE TIME: 6 HOURS - This product cures at room temperature with negligible shrinkage. Best to store at room temperature, see "For Best Results" section below
- LOW VISCOSITY FOR EASY MIXING AND POURING - Great for making simple one- or two-piece block molds, no vacuum degassing is necessary
- PERFECT FOR ART AND INDUSTRIAL APPLICATIONS - Often used for molds to reproduce sculptures and other prototypes, casting plaster, resins, and wax
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Use this silicone mold making rubber for making perfect reproductions that capture intricate detail of original models. OOMOO 30 is easy to use silicone rubber compounds that feature convenient one-to-one by volume mix ratios (no scale necessary). Very low viscosity for easy mixing and pouring and vacuum degassing is not necessary. Cures at room temperature with negligible shrinkage. OOMOO 30 has a 30-minute pot life, with a six-hour cure time.
For the novice mold maker - OOMOO30 does not have great tear strength. They are good for making simple one- or two-piece block molds. OOMOO30 is suitable for a variety of art-related and industrial applications including making molds for sculpture and prototype reproduction, casting plaster, resins and wax.
Mixing Ratio: one to one by volume (100a:130b by weight)
Pot Life: 30 min.
Demold: 6 hrs.
Color: lavender properties (part a and b mixed)
Viscosity: 4,250 cps g/cc: 1.34 Cu. In./Lb.: 20.6
Tensile Strength: 240 psi
Elongation at Break: 250%
Die C Tear Strength: 40 pli
Compression Set: 37%
Shrinkage: .0025 In./In.
Net weight 16 oz. (454 Grams)
For Best Results: Store and use silicone products at room temperature. If material freezes, silicone base will become very thick. Simply allow product to get down to room temperature before use.
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Only now I started searching for long shelf life potting silicone... and came across discussion where they curse smooth-on for short shelf life, and mention decent ones, one of which is GI-1000 by silicones-inc.com. (Correction: someone mentioned GI-1000 has 6 Months shelf life too, so I'd like to scratch the reference to it. I would like to add different example: Dow Corning 3120 RTV Encapsulant - I have it on my shelf for 30 years, still works, dreams are: you can find similar product with similar shelf life today...) Do your own search and get yourself the one with long shelf life of components (unless yours is a single in a lifetime project).
I've worked with silicone for years and this is the worst I've ever used. It tears easily and STICKS to the original - I tried with two separate bottles and bad results both times - I liked the price of this stuff, but saving a buck ruined my original worth hundreds of dollars. Don't be penny wise and pound foolish - a refund won't bring back my original sculpt.
The larger picture on the left shows my completed molds. These were made from the full amount of this product.
I changed the retaining wall height to be lower than the King's mold. The first picture on the right shows two sample Lego molds. 1-A is made the height of 2 standard bricks, like the king's mold. 1-B is the height of one and two-thirds bricks. This uses less mold material, so you can make more molds. I have three separate smaller molds only because I did not know how much more material I would have after filling the main 10" base plate mold. I plan a second set, so will know how to set up the second base plate.
1-A in the image shows a sample mold with the border being two full bricks high. 1-B shows my variation, using 1 and 2/3 height for the mold walls.
The second small picture shows the difference. You don't need to make the entire wall of the 2/3 height, just a section of it that you fill to when pouring the mold. The final small mage on the right shows the depth of the base of the finished mold, and how deep it would have been for the full-two-height wall. This design allowed me to create the smaller molds and so I can make more gummies from one batch.
I have used these molds to make over a dozen batches of candy. They look and feel the same as when I started. So I would give it extra points for durability. I'm having a blast with this stuff!
At the present time, it is listed as free shipping, but will not present the free shipping option on checkout, defaulting to standard shipping.
The product itself serves well for making moderate use molds for soaps. I've bought this through another source, and it cures and stretches as advertised, but does tear if one pushes it too hard. It is excellent at picking up detail.
I've seen enough people use this to know it does it's job well when it's fresh, but my problem with this is how are we supposed to know how long it has been sitting on the shelf before we receive it? There is NO printed date on the box. Unfortunately for me I didn't open it until my Amazon return window was closed so now I'm stuck with a lonely jar of Part B.