/!\ Neither the mold nor the printing, who appear in this article, will be used in the project. Indeed these were only useful during exhibitions and for that very purpose. Once the new chevron finished and the new mold made, they’ll end up in cold storage. Furthermore the holder of the original chevron where the piece here is taken, asked me indeed not to use it but make my own chevron based on the measures that I have in my possession. /!\
This is a single-use mold. The aim was here to make a reproduction and make it perfect with finishing resin during Comic Con in Paris.
First step, put some plastiline along the piece so that the mold does not extend below.
Second step, a diluted layer of silicone in order to take a precise impression of all the details.
Then, a layer of undiluted silicone.
And a second.
Then, because of lack of catalyst (and my own fault, I put too much of it into the pre-dose), a final coat on the edges.
At this moment a tixotropant agent would be useful for angles. It allows indeed to make the silicon thicker. But I did not bother to order it.
The Chevron rests until I receive my next order, I save it from the dust.
There was no longer enough RTV 3325 silicone that I used, I took a building silicone for the edges. This is a stopgap system, if you can do it differently, that means with a tixotropant agent, do it. It remains a final layer of silicone to hold it all.
When the silicone is dry, I use a plaster tread to stabilize my mold. If this mold should be used more than once, I would have used some resin and fiberglass for the tread (you will see the final mold soon).
This tread is broken there because of its smoothness and lack of reinforcement.
So the second attempt with plaster strips this time is performed by my father, whose job is to make casts in hospital.
This gives us a beautiful mold, very white, so overexposed here in the garden. But it’s beautiful anyway.
For information, this casting is missed, so I’ll repair it at best, (this will allow to prevent me from making more important mistakes), but as mentioned above, it will be of no real use in the project. Before making a new mold, we’ll have to wait that I make my own chevron with forex. 😉
Don’t worry, we speed up inch by inc.