Title: Time will tell...UPDATED
Content: UPDATE: As promised, here is my update. As you can see, I increased my rating to 4 stars. This silicone works just fine. Still not a 5 for me because I feel that the price is way too high, and because of the couple things I've already stated below. It works, just not an economical choice if you are making molds for resell. I've been using silicone for years, my business is literally mold making... I've only been using professional Smooth-On products for the past several years, and so I decided to give this a shot to see if it could work for some smaller projects if I'm in a pinch and run out of my go-to silicone. First, I've noticed this product is EXTREMELY thin, which surprised me as I currently use a 10A silicone, and this product, at "supposed" 15A, is considerably thinner. This does help the product degas itself quite easily, which is nice if you don't own a pressure pot or vacuum chamber, but only if the end result is desirable. I poured a mold approx 20mm thick, using an acrylic box frame which I also coated with a thin layer of Inhibit X and mold releasing agent. As of right now, the remnant product in the mixing cup, after several hours, is still quite sticky. With my other silicone, this would have already setup much more...so I am slightly concerned as to how long this will actually take to cure. If it takes longer than the manufacturer states, then that will be the first major issue I'll have with it. A manufacturer should know, and be able to relay, accurate curing times for their product. I do not have excessive heat or cold, and environmental conditions are normal, stable, and compliant with manufacturer guidelines. The mold is thin enough to where it should only take 6-8 hours, based on prior experience working with silicone, to cure well enough to unmold. As of right now, I'm neither impressed or unimpressed, just concerned. This might be a decent silicone to use for very small craft projects, but I'm waiting to see if it can perform well enough to be used for more complex projects. I'll update my review at after I see final results. Also... no where on the package nor in the instructions does it state what this particular silicone's Shore Hardness is. It oddly enough gives a "comparison chart" for different Shore Hardness in the package insert, but nothing to indicate what this particular silicone is....a bit ridiculous. It is made in China, so I overlooked all the odd grammar and English used. I did not appreciate having to come back to Amazon to look/check for product information. An MSDS should also have been included as wasn't. I'll update shortly.