Katherine of Resin Obsession (http://resinobsession.com/) asked us to clone her dinosaur toy. She wanted to see how we do it, and she thought it would be a great way to show the power of ComposiMold to her customers.
So after she delivered the dinosaur to us, I got busy.
You never know the best way to make a mold. Even the best mold makers need to experiment to find out how they should set it up.
Where should you pour in your resin? Do you need to make a two part mold? Where should the parting lines be?
And that’s where ComposiMold comes in to play… it is reusable. I can experiment without worry, and without wasting materials.
So I did what I always do when starting a new mold making project…I experimented.
I placed the dinosaur into a cup and poured ComposiMold over it to see what happened…
I would like to say it worked perfectly and the mold is done and that’s the end of the story, but it’s not…well sort of…It did work just not the way it was supposed to.
The dinosaur didn’t float, but it didn’t stay on its feet. It flipped over onto its side…oops. Good thing I wasn’t using silicone rubber for my mold! First, I wouldn’t have known that it was flipped over because the silicone is opaque, second I would have wasted $30 on a messed up mold.
With ComposiMold, I placed the mold in the refrigerator to cool off, started to pull out the dinosaur to do it again, when I realized that the mold turned out pretty good.
When it was solidified, I thought that the mold looked pretty good, so before remelting it, I poured a little more ComposiMold over the side to make it a little thicker, cut out the dinosaur and filled it with the epoxy just to see what it would be like…it was difficult to fill the small parts…I used a small wire to push the bubbles out of the hands and tail. So the mold worked. This blue dinosaur is actually a color changing dinosaur. When I add heat, it will turn clearer. (She’ll turn invisible!)
But since that wouldn’t make a good video I decided to do it again. Yes, I know. ComposiMold is cool…no wait, warm, warm when it’s melted. So I remelted the mold and did it again the “right” way so I can have it on video….
First I coat the dinosaur with a thin layer of mold release, and then spray it with Bubble Buster to reduce the chances of bubbles sticking to the part.
To hold the dinosaur in place now that I know it will flip over, I have several options. I can glue it in place, do it as a two part mold, or the way that I chose….I poured a little ComposiMold into a cup and let that solidify first. Then I placed the dinosaur into the cup and poured a little more ComposiMold around its feet and torso and let that solidify. This ComposiMold held the dinosaur in place while we made the rest of the mold. Because we did not cool the first part of the mold or put a mold release in between the layers, the ComposiMold will melt together.
Another advantage of ComposiMold is that it is transparent. We can see where the dinosaur is within the mold. This lets us cut the parting line where we want it to be.
We could also have done this as a two part mold, but this seemed easier. Maybe we can do a two part mold next time… just to show the difference.
I assumed that the people who made this dinosaur originally put their parting lines in good spots, I decided to copy where they put them. But since I used a rubber mold making material, I need less of a parting line. I cut from the top so I could remove the part without damaging the feet and tiny hands.
I used Resin Obsessions Clear Casting Resin…This was my first time using that resin. It was thin for easy pouring and easily colored with different color dyes…also from Resin Obsessions.
I made several dinosaurs with this mold. Then, because I can, and ComposiMold is awesome like this, I remelted it to make a new mold. I made a rabbit to keep the town safe from the Dinosaurs!
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