It looks very easy to make the silicone mold,but there are many places you need to note when you operate.Here is the ways to teach you how to make the silicone molds.
1.Use the LEGOs or acrylic to make a frame according to the size of the model and brush a layer of glue to prevent the leak out of the rubber.
2.Fasten the model with the clays and spray the properly release agent on the surface to easy to demold.
3.Weigh the slicone rubber and curing agent according to the ratio which write in the instructions
4.Mix the silicone rubber and curing agent,and stirring evenly to prevent incomplete curing.
5.Put the mixture into the vacuum bump to remove the bubbles.
6.Pour the mixture into the frame or brush the mixture on the model.
7.Generally preliminary cured in 2 to 3 hours,it’s suggest to demold after completely cured and put into use after 24 hours.