12. Moulding and Casting.
For this week, what we worked on was a model created on the CNC router that would serve as a base to transfer it to silicone and create a piece..
Description of the work process of the week12
To start this week, the first thing I made was a fusion model that took me a little time, since I didn't visualize well how it should be, for this I based myself on some molds that I have at home to make flowers and "bang" I was inspired by them and started doing them.
It also occurred to me to make that same piece, but in 3D, I mean if I already had the model I just had to print it and then just create the casting, although my project this week focuses on the one I made on the CNC router.
Weeks ago we made 2D cuts (straight engraving, B engraving, pocketing, etc.) This time it was time to cut in 3D, but... How would we do this?
From the three-dimensional model, which I realized was a bear face downloaded as an STL file and then passed to the machine, it was destroyed until it reached the shape I required.
The second step to complete this task was to make the silicone mold. For this, what I did was mix the ingredients, the “Smooth on 3030” silicone and the catalyst; Using the following measurements: 100g of silicone per 10g of catalyst, my piece took an average of 72 hours, so that it could have the correct setting, after this time I removed it from the mold.
Finally, I used my silicone piece for a final piece with gelatin, only in the preparation I added more gelatin so that it had a gummy consistency.
reflection and analysis
For this task, what took a little more work was making the piece on the CNC since, being a small piece, I had to take many precautions, especially when attaching it to the sacrificial table. Another thing to take into account is the correct use of measurements in the silicone mixture (100% by 10%); Since this could alter the consistency and drying time of the final piece.