---
title: "Making a Silicone Mold and Concrete Casting"
url: https://stacklist.com/card/cce9e1bd-9f97-49cf-9c9d-1bcd8ac24a35
source_url: "https://www.quikrete.com/athome/video-making-silicone-mold-and-concrete-casting.asp"
stack: https://stacklist.com/stack/d24ced05-ab3e-46bb-b32b-fb3dc5a78cbb
summary: "Making silicone molds and concrete castings is a DIY process that allows you to duplicate objects by creating a silicone mold and filling it with QUIKRETE Concrete Mix. The tutorial provides step-by-step instructions using common materials like water bottles, hot glue, and silicone to create decorative concrete items such as vases."
tags: "silicone-molds, concrete-casting, diy-tutorial, quikrete, mold-making, concrete-vases, crafts"
key_entities: "QUIKRETE (organization), Mold Star 30 (technology), silicone-mold-making (concept), concrete-casting (concept), concrete-vases (concept)"
classification: "tutorial"
content_hash: "sha256:74c83c257219a1004b56f1f00580ee7cdb11aa6c063b7b6922e213ef551d04c7"
acp_version: "0.2"
token_counts_approximate: 581
visibility: public
agent_accessible: true
status: "final"
---

# Making a Silicone Mold and Concrete Casting

HOME QUIKRETE® At Home How-To Videos Casting Concrete Vases HOW-TO VIDEOS A great way to view and understand your building or repair project before you get started. Find out just about everything you need to know by watching the video below. MAKING A SILICONE MOLD AND A CONCRETE CASTING Duplicating objects you love can be made easy by making a silicone mold and filling it with a QUIKRETE Concrete Mix. Project Instructions Shopping List Project Instructions When working with cement-based products, always wear eye protection and waterproof gloves. Step 1 Select the object being molded and cast. Step 2 Cut off top of water bottle, and then, make a second cut ½ an inch above the top of the object to make a tube for the mold. Step 3 Cut a 1 inch wide band from the remaining water bottle as a support for the mold. Step 4 Cut a piece of plastic from another bottle, as the base, and hot glue the object to the plastic bottom. Step 5 Hot glue the tube to the plastic base around the object and ensure it is sealed and water tight. Step 6 Pour water into the tube and cover the entire object to ensure it won’t leak. Step 7 Pour that water into the cup made of the bottom part of the water bottle. Step 8 Draw a line at the top of the water to show how much silicone you will need. Step 9 Mix and pour the silicone into the tube and then let cure. Step 10 Cut away any plastic from the outside of the silicone mold. Step 11 Remove the object from inside the silicone mold. Tip: You may need to cut the silicone to help free the object and if so, try to cut the silicone where it will be least visible on the mold. Step 12 Slide the 1 inch plastic ring around the silicone mold to hold it tightly together. Step 13 Mix the concrete, following the instructions on the bag, and pour the mix into the mold. Tip: Make the concrete a little more watery than usual to help it pour easier into the small mold. Step 14 Tap and vibrate the mold to remove as many air bubbles as possible and let cure. Step 15 Remove the plastic ring from outside of silicone mold. Step 16 Cut silicone and remove the concrete copy   Shopping List QUIKRETE Countertop Mix Mold Star 30 Plastic Bottle or Container Hot Glue Gun Knife Mixing Bowl for concrete Wooden Stick and/or Spoon Marker or Pen Pliers Waterproof Gloves Safety Glasses