Hello, friends!
I want to share with you a simple and budget way how to make a silicone mold for gypsum. Compared to molded silicone, this method is several times cheaper. And materials for manufacturing can be bought at any hardware store. And with a little dexterity, the forms are obtained no worse than from molded silicone.
Here's what you need:
- Silicone sealant acetic;
- Gypsum or alabaster;
- Liquid soap;
- Cardboard, tape and hot glue.
Step 1.
I made a formwork out of cardboard. I cut out the pieces of the desired size and glued them with wide adhesive tape on one side. This is necessary so that the cardboard does not get wet.
Step 2
Assembled formwork with hot glue.
I made the formwork based on the size of the part from which I will remove the form.
Step 3
I diluted liquid soap in water, then lubricated the part and the formwork from the inside with this soapy water.
Step 4
I'll warn you right away, acetic silicone stinks a lot, so it's best to work with it in a well-ventilated area or even better outside.
I squeezed the silicone into the soapy water and began to knead it. Don't worry, silicone won't stick to your hands in soapy water.
Step 5
I transferred the silicone to the part and began to smear a thin layer over it. The layer thickness is approximately 5-7 mm.
For such a large part, it took me 2 tubes of silicone. In the end, I will calculate how much the form cost me.
Step 6
After 4 hours, the silicone is dry and you can continue to work.
I spread the gypsum and poured it into the formwork over the silicone.
I vibrated a little with my hands so that the bubbles came out.
Step 7
After 2 hours, I dismantled the formwork.
The silicone mold easily moves away from the part.
Step 8
I spread the plaster again and poured it into the mold.
After 2 hours I got the finished part.
The copy turned out just fine, without flaws.
What happened for the price:
- 2 tubes of silicone (I took the cheapest one) - 200 rubles;
- Gypsum for formwork about 2 kg for 10 rubles - 20 rubles;
- I do not consider cardboard;
- Scotch took 10 rubles;
- Soap did not believe it took very little;
- Hot glue 1 rod - 10 rubles;
TOTAL: 230 rubles for a large form.
If you pour liquid silicone, then the price of such a large mold will be approximately 800-1000 rubles. The difference is obvious!
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