Polly Plastics invited me to review their Moldable Plastic and Silicone Mold Putty Kit. This kit comes with 10 oz. Moldable Plastic and 1/2 Lb. Silicone Mold Putty. The silicone putty comes in two parts; A & B. The silicone putty is what you use to make your mold. Simply mix together, by hand, two equal parts of A & B. I did my project on wax paper on top of a silicone baking mat.
Once parts A & B are mixed together roll it in to a ball. Then compress the item you’re molding in to the silicone putty. Just make sure that you don’t press it in too far. You don’t want your object to push through the silicone putty. You object needs to be covered by the putty. For this project I used the Inkling Squid amiibo.
If you don’t have an object to clone you can also use the putty to sculpt your object for the mold. For instance I also wanted to make the Splatoon Squid in jumping motion. I used the putty to sculpt this design; top left photo. I used the putty to also create the mold; top right photo. The I followed the remaining directions in this tutorial to completed the last two photos. I’m not finished with this necklace so I don’t have a completed photo to show. I will update this blog once it’s completed.
Once your item is in the putty leave it in the putty for 30 minutes. Once the putty fully dries or hardens you can remove your item. You might have to wipe away some debris from your item but for the most part it comes away clean.
For this next step I’d recommend going to a thrift store and buying and old pot. That way you don’t melt plastic in your good pots and pans. Bring a pot of water to a boil. Pour the desired amount of moldable plastic pellets in to the boiling water. Try to push them together with a spoon.
Once the white pellets turn clear remove them from the water with a spoon or set of tongs. Quickly work the melted plastic pellets in to your mold. I’ve learned that it’s best not to have excess plastic coming out of your mold. It’s better to take a few moments to remove the excess plastic or proportion out the desired amount of plastic. If you have excess plastic you will have to remove it once the plastic hardens. It’s easier to do this while the plastic is still soft. You have about 3 minutes to work with the plastic before it cools too much. You can throw it back in the boiling water if you want to redo it.
Let the plastic set until it’s fully hardened. It doesn’t take too long. The plastic will turn white when it’s fully hardened. At this step I use a crafting knife to cut away the excess plastic. I really wish I had a Dremel tool to smooth the edges. If I continue this hobby I will invest in one. It would be much easier to clean up the plastic with a Dremel tool. For now a crafting knife will do. I did end up using a hair dryer to heat up part of the plastic. I was able to reshape some of the sides and clean up some of the edges this way.
Once you get the plastic how you like it the next step is to paint it. Don’t use a water based paint. It doesn’t work well. I’d use acrylic paints. I’ve honestly not perfected the painting process so if you have a better idea please let me know. Right now I’m using acrylic with a gloss varnish. Here’s my completed Inkling Squid amiibo necklace. (To make a necklace use a Kebab skewer to poke a hole in the plastic before it hardens in the mold.)
For my first attempt and without a Dremel tool I’m pretty happy with how well this Polly Plastics project turned out. I want to try this mold out for making candy. I’d also like to try it out with clay. I think clay might be easier to work with than the plastic pellets.
1/8/15 Update: Here’s a photo of candy making with this mold. I could have cleaned up the edges of the chocolate better but my little one was too excited to eat them .
Easy to use
No excess odors
Great for cosplay
Food grade silicone
Plastic is hard to work with once its hardened especially with out a Dremel tool
Ratings (Out of five stars):
Overall rating: 25 out of 25 stars / 5 Star Average