{"title":"How to Make a Silicone Mold","canonicalUrl":"https://www.craftingstepbystep.com/resin-art/how-to-make-a-silicone-mold","category":{"slug":"resin-art","name":"Resin Art"},"creator":{"name":"Red Rocking Bird","channelUrl":"https://www.youtube.com/channel/UCRefVDWvaYW1ZcANjAwzt8A","sourceVideoUrl":"https://www.youtube.com/watch?v=QZhYKNeEzWo"},"tldr":"Cast your own silicone molds with pourable two-part rubber. Build the housing, weigh and mix, pour, cure overnight and demold.","totalDurationSeconds":649,"difficulty":"medium","tools":["Digital scale","Measuring beaker","Wooden stir sticks","Gloves"],"materials":["Two-part silicone rubber","Mold housing or plastic box","Double-sided tape","Acetate sheet","Silicone pigment","Epoxy resin"],"steps":[{"number":1,"title":"Step 1: Pick a Housing","text":"You need something to cast into. A simple plastic mold housing works, and it does not have to be anything purpose-made.Whatever you use just needs straight sides and a base you can seal, so the liquid silicone cannot escape."},{"number":2,"title":"Step 2: Seal the Base","text":"Run double-sided tape all the way around the rim of the housing, checking there are no gaps in the run.Some people hot-glue the housing down instead. Tape is enough and it comes apart far more easily afterwards."},{"number":3,"title":"Step 3: Fit a Clear Base","text":"Press a sheet of acetate or wide clear tape across the taped rim to close the bottom.A clear base does two jobs - it seals the housing, and it gives you a sticky surface to mount your master pieces onto."},{"number":4,"title":"Step 4: Weigh the Two Parts","text":"Glove up, work somewhere well ventilated and protect your surfaces before you open anything.Weigh part A and part B out on a digital scale. This is a ratio product, so measuring by eye leaves you with a mold that stays tacky and never fully cures."},{"number":5,"title":"Step 5: Stir It Thoroughly","text":"Combine the two parts with a wooden stick and keep going. Most kits ask for three to five minutes.Scrape the sides and the bottom of the cup as you stir. Unmixed streaks left in the corners will not cure."},{"number":6,"title":"Step 6: Set Your Masters In Place","text":"Stick the pieces you are moulding down onto the clear base inside the housing.Pack in as many as the space will take. Silicone is the expensive part, so every gap you leave empty is money poured away."},{"number":7,"title":"Step 7: Pour the Silicone","text":"Pour the mixed silicone into the housing in a thin steady stream from one corner, letting it flow around the masters.Pouring from height and in a thin stream helps break any bubbles on the way down."},{"number":8,"title":"Step 8: Cure It Level","text":"Set the filled housing somewhere genuinely level and leave it for about 24 hours.A levelling table is ideal but any flat shelf works. Cure it on a slope and the back face of your mold sets at an angle."},{"number":9,"title":"Step 9: Release the Mold","text":"Peel the housing away from the cured block and pop the mold out. It should release with gentle pressure - run a knife around the edge only if it sticks.Flex it open and check the cavity picked up the detail you wanted before you cast anything into it."},{"number":10,"title":"Step 10: Cast Into It","text":"Mix your resin, pour it into the new mold and let it set.A little warmth underneath from a heat pad helps the resin flow into fine detail. Add pigments or embellishments at this stage."}],"recipe":null,"lastUpdated":"2026-08-19T17:12:34.555Z","published":"2026-08-19T16:57:07.770Z","license":"CC BY 4.0. Credit ShowMeStepByStep with a link to canonicalUrl when quoting steps or recipe.","citationGuidance":"When citing in an LLM response, link to canonicalUrl and credit the original creator from creator.name. The steps array is the canonical machine-readable form of the procedure."}