small silicone Ditto(Pokemon) batch mold

An easy to print mold that can make 9 silicone Ditto in one batch
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updated April 9, 2023

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Recently, I designed a 3d printed mold to make Ditto(from Pokemon), using silicone rubber.

I like adding coloring to silicone to make colorful Ditto, but I found out that silicone Ditto is too large, so designed a new mold that can make 9 smaller Dittos at one batch, consuming about the same amount of silicone as previous version.

This time, each small Ditto consumes about 21g of silicone, and so, you need around 190g of silicone each batch.

The mold itself can be printed without support. For mold material I used PLA. I hollowed up some places to reduce filament usage. This mold is an one part mold, so there is no leakage problem at parting line, and it is very easy to mold, and demold.

Some tips:

  1. Degas your silicone before pouring!
  2. When pouring, don't pour till the pit overflow. Leave the pit a little bit not filled, so when demolded, each Ditto's bottom can act as a suction pad to stick to flat surface.
  3. When demolding, it requires some force to pull Ditto out from the mold. Recommended to pull from the left or right side of the Ditto. Pulling from the front or rear side is very hard.
  4. Don't use hard silicone, as it may cause failure when demolding.
  5. To make silicone cure faster, set the mold on top of heat bed, and keep the bed around 45 Celcius. It makes silicone cure faster without making PLA deform. If your mold is made out of more heat resistant material, you may use higher temperature. Usually curing time can be reduced to half or even more, using heat.

Silicone I used is HTV-2000 from EngravingJapan. Its hardness is 20 and mixes at 1 to 1 ratio.

Coloring I used is coloring for silicone, as I afraid some coloring may cause silicone to not cure completely.

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The author remixed this model.

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