1. When working with Instant Mold, be sure to use slightly hotter water than it states on the package. At 170 degrees Fahrenheit the mold cools too quickly and it may not have enough time to spread over the piece you wish to duplicate. I have found 208 to 215 degrees Fahrenheit works best.
2. With 1 part molds (molds that lay flat on one side) use something to put the piece in so the mold has a shape to conform to. What does this mean exactly? When making the mold often times small areas won't become properly filled in because pressure from multiple sides can't be applied. With an enclosure (ie sides) to force the mold material to stay within a confined area you will be able to apply more even pressure from the top. This will reduce imperfections.
3. Wipe off any excess water after removing the mold material. Imperfections are often caused by the water still sitting on the mold material that has no place to escape when forming around the cast piece.
4. Two part resin CAN be used with Instant Mold. The trick here is to only use it with smaller molds or apply multiple layers so the resin can't heat up to a temperature which will melt the plastic. It takes some experience to know how much is too much. The thinner the piece, the easier it is to cast in one go. Generally I've found that if there are less than 40 drops from each bottle (yes, I count the drops) you won't be melting the mold.
5. When using resin with two part molds, fill both sides to almost the top. Finish filling one side and allow them to cure. Now complete the part by filling the side which has the gap and put the two pieces together. Let the two sides cure together. Complete your piece by removing the two sides and trimming any excess.
If you use these simple tips and tricks, you'll have no problem making some fantastic duplicates. To show I'm actually talking from experience, here are some things I've used the Instant Mold to create.
|Almost all resin|
|Resin bases are prime for recreating|
|Custom daemon base|
|Floating Horror heads|
|Flamers of Tzeentch... entire model 2 part mold|