Mini Fig Chocolates from start to finish

Picture of Mini Fig Chocolates from start to finish
Using a vacuum forming machine, I was able to make candy molds of LEGO men.  They turned out very nice, and I'd recommend the project to anybody else.  I made this at Techshop Pittsburgh.
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Step 1: Create the mold - 1

Picture of Create the mold - 1
First, make sure that you turn on your heating element to warm up.  Your settings will depend on your machine, but I left it on the default settings, which was a uniform heat, and about 80% power.

Then, you must create a mold layout.  With the masking plate down, I laid out all of my mini figs.  They will shake around a little bit from the platform going down and up.  I might try attaching them to a large, flat lego surface, but you must be careful to not cover the vacuum intake.  It worked pretty well without that, though.  Keep them away from the edge by about an inch.

Then, lower the tray.  Since they are plastic, I lowered it quite a bit to make sure that I didn't melt them.

Step 2: Create the Mold - 2

Picture of Create the Mold - 2
Next, lift the mask or clamp on the vacuum molder, and put in your PETG.  I bought my piece at the Techshop for $2.  I had to peel off a protective film on each side of the plastic before putting it in.

!! Do not use a plastic that is toxic!!  PETG is a food grade plastic, and it will not poison you when you make chocolates.

Make sure that the clamps are set before moving on.

Step 3: Creating the Mold - 3

Picture of Creating the Mold - 3
Pull the heating tray over the plastic.  This will automatically begin the timer, which you could have set before.  I experimented with the timer, but in the end I just waited 30 seconds beyond when the plastic rippled and then became still again.  I have uploaded a video of what that looks like.

If you wait too little, then the plastic will not be pliable enough, and the mold will not get into the nooks of the pieces.  You can still use that piece of plastic as long as you don't have holes in it.  Just reset your pieces and start over.

jellyflame1 year ago
Is it hard to make the molds?
MicioGatta1 year ago
Great. I'd love to do this with my Lego Fabuland figures! :)
ThinkbotB (author)  MicioGatta1 year ago
I just did a quick google image search for these. I think that would be cool, but there will probably be a lot of undercutting. They seem pretty big. Maybe if you pushed them into clay, and then cut around the edge very closely it could keep the PETG from being vacuumed into those spaces. I've heard of that, but not done it at all. Good luck!
Great idea
Kdemon1 year ago
These would of been great for my gingerbread house... Next year!
my mom did something similar to this.