Welcome to another episode of Tinkerine Experiments!
Today we're going to make a mold with PLA.
We will be using the Smooth-Sil 940 to create our silicone mold.
We've received quite a bit of requests on making a mold with PLA so here we are!
This is our first time making a silicone mold but we do have some knowledge on how to roughly
make one.
We already made our lego rectangle and 3D printed our model for our mold.
First, we have to use some clay to prevent the model from moving when we pour the silicone
in.
So we will put a little bit of clay on the back and place it onto the glass.
Afterwards, place the lego rectangle over the pieces and use the clay to surround the
lego rectangle.
This will prevent the silicone from leaking as well as prevent the lego from moving around.
Here it is!
Now we have to mix our silicone.
We need 7 grams of the part A silicone mixture and 70 grams of the part B silicone mixture.
You will need to have the exact measurements of both to create the silicone mold.
You can adjust the values to suit your needs.
Let's combine the two and mix it.
We have to mix it thoroughly.
Mix it until you see a very smooth pink according to the instructions.
I think that should be good.
Before we proceed to pouring the silicone mixture in, we will have to do a quick spray
with a mold release.
One layer should be good.
Now let's pour it in.
Once the mixture is mixed, there is only 30 minutes before it starts to harden.
Put it in slowly and make sure you cover the gaps and fill it out completely.
Afterwards you can use a tool to tap the lego to help release the air bubbles from inside
the mixture.
It is not a necessary process but it'll help.
It takes roughly 8 hours for the silicone to cure so we will just wait.
It's been 8 hours!
Now we can remove the lego and the clay.
Here is what the bottom looks like.
You can see some of the silicone actually reached under the model but no worries.
Well, there we have it!
We tried making a silicone mold and it came out really nice.
It's a very quick and easy way to make a silicone mold.
Next we will have to test out the mold but that will be another episode!
That's the end of our experiment!
Remember to subscribe below and comment on what experiment you will like to see in the
future.
Thank you for watching.
Tinker Out!