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How To Cast Anything With This Two Ingredient Mold

Sometimes it’s just fun to play around and create for the pure joy of it — case in point this little concrete pear. When our blog was MIA a few weeks ago, I went into a total downer. And when this girl gets down, she goes shopping for food. Anyone else do that? So while walking around our local store, I spied a plump, little green pear with the cutest butt ever. Weird, I know. If I’m not feeling up tin cans to make a washing board I’m checking out the butts on pears 😀  Anyways she came home with me and rather than chopping her up for a fruit salad, I decided to make a “two ingredient” mold, and turn her into a paper-weight instead.

Ever wanted to make your own silicone molds? All you need is two ingredients and you probably have them at home already. #mold #mould #concrete #DIY

Kinda cute right?!!! She’s been drizzled with a rich copper paint sauce. If I ever master the art of cooking I’d love to make a baked pear dish with a drizzle of sauce. It looks like something that could be served in a 5-star restaurant. Okay, maybe not 😉 So since the only recipes I know how to follow are those that involve a strange mix of ingredients, let me share how to make a mold, using only two ingredients that can be used to cast almost anything.

But before we get to the tutorial, be sure to follow us on Facebook, Twitter, Pinterest, and Instagram. And don’t forget to subscribe to our monthly newsletter so you’ll never miss a post!

Two Ingredient Casting Mold

  • Silicone
  • Maizena or cornstarch

The Other Stuff

  • Whatever you want to mold. I used my shapely pear 😉
  • Plastic knife for mixing
  • Mixing container
  • Caulking gun
  • Sharp knife
  • Super Glue
  • Gloves

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

Prepping the Form for Molding

Wash and dry the pear, or whatever you decide to cast. Since I’ll be filling the mold with concrete once it’s dry, I stuck a pen lid into the bottom of the pear. It helps keep the pear upright while the mold sets and will leave a hole that’s the right size for pouring in the concrete mix later.

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

See what I mean about the cute pear butt 😉 I stuck the pen lid into a bit of polystyrene before mixing up the mold. It’s a trick I learned when painting polystyrene balls 😉

Mixing the Two Ingredient Mold

Put your gloves on and throw some cornstarch into a container. Cut the tip off of the silicone tube and put it inside the caulking gun. Squeeze some silicone into the cornstarch. Roughly the same amount. Then add some more cornstarch on top of the silicone and stir using the plastic knife. It’s probably best to do this outside. Silicone has an incredibly strong vinegary smell. When it looks like it’s almost mixed, start kneading the mixture until it forms a stiff paste that resembles bread dough.

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

If the mixture is too tacky or sticky, add some more cornstarch. If it’s too dry and flaky, like in the piccy above, add more silicone. Once it’s ready, flatten it out a bit and wrap it around the shape you want to cast. About 7 to 10 mm thick is perfect. That’s about 1/4” to 3/8”. Make sure you squish it into all the nooks and crannies.

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

Sit back and wait for it to dry, probably about ½ hour depending on the silicone you used. Use a sharp knife to cut the mold and remove your form. The two ingredient mold is very pliable so you can just peel it off. If you’re molding a pear, please don’t eat it. Rather wash it off again and add it to the compost heap.

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

Use super glue and carefully glue the two halves back together again, and it’s ready for casting.

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

Casting the two ingredient mold

You can either use concrete or plaster of Paris. I didn’t have to add any kind of release agent, I simply mixed up some concrete and poured it inside the mold. Just make sure you shake it around a little to get rid of any air bubbles. Once the concrete sets, carefully cut along the seam lines and remove your form.

Check out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

The two ingredient mold can be reused over and over again, just wash it off, and you’re good to go.

See how to make your own mold using two basic ingredients you probably have at home already. It's easy, fun, reusable and only takes a few minutes #mold #mould #ACraftyMix #concrete #DIY #siliconemold #DIYMold

To finish the pear off, I used some copper paint to create that 5-star restaurant look and added a bent, rusty nail as a stalk. The leaf was cut from a piece of metal that’s been lying outside in the rain for a few months.

See out how to make your own molds using two basic ingredients you probably have at home already. #mold #mould #concrete #DIY

A little bit of rust always works for me.

Ever wanted to make your own silicone molds? All you need is two ingredients and you probably have them at home already. #mold #mould #concrete #DIY

The easy two ingredient mold works really well and can be reused over and over again. And I do so love that combination of concrete, copper, and rust.

Ever wanted to make your own silicone molds? All you need is two ingredients and you probably have them at home already. #mold #mould #concrete #DIY

Just a word of warning. Once you make your first mold, everything looks moldable 😀 We’ve turned an old broken doll into a garden ornament and even created our own Egyptian cartouche using the two-ingredient mold.

And if you like the idea, don’t forget to save it to Pinterest so that you can find it again!

See how to make your own mold using two basic ingredients you probably have at home already. It's easy, fun, reusable and only takes a few minutes #mold #mould #ACraftyMix #concrete #DIY #siliconemold #DIYMold

Let me know what you think. What would you mold?

See how to make your own mold using two basic ingredients you probably have at home already. It's easy fun and only takes a few minutes #mold #mould #ACraftyMix #concrete #DIY #siliconemold #DIYMold

Psssst, if you don’t want to go to all that trouble and find some of the materials we used, we’ve got you covered Disclosure: If you click on the links below, we may receive a commission from Amazon. But don’t worry it won’t come out of your pocket, and it helps us come up with more unique DIY and craft tutorials to share with you  😉

Dap 08641 Clear Silicone Sealant 9.8-Ounce
Corn Starch (4 oz.) by Pure Organic Ingredients, Thickener For Sauces, Soup, & Gravy, Highest Quality, Kosher, USP & Food Grade, Vegan, Gluten-Free, Eco-Friendly (Also in 8 oz,1 lb, 2 lb, & 3 lb)
CTS CEMENT MANUFACTURING 120020025 25LB Cement All Box

And as always hope you have a wonderful week, filled with love and lots of interesting new finds. Thank you for popping in for a visit.

Made with love by a Crafty Mix

Categories:   DIY Tutorials, Home Decor Crafts, Quick & Easy Crafts

Comments

  • Posted: March 17, 2020 14:33

    Kati

    I'm so happy I found your blog. You brought me a ray of sunshine on this dreary rainy day. I used to buy paper mache ducks and cover them with pine cones. And of course, the company went out o business. I have one duck left and have been looking for a way to make an inexpensive mold so I could make my own. Do you think the mold will hold up if I use a paper mache paste?
    • Posted: March 17, 2020 14:46

      acraftymix

      Well hello Kati and I'm super glad you found our blog too 😘 The mold will hold up beautifully if you're going to fill it with paper mache paste. To protect your precious duck that you'de like to use, I would give it a few coats of varnish or sealer, just to make sure none of the moisture from the silicone seeps through while it's curing. I don't think it will but just to be sure. I hope you have lots of fun and I would so love to see those pine cone ducks of yours. They sound fascinating.
  • Posted: February 28, 2020 17:42

    David Pfeiffer

    If there was an award for "The Best Writing, Imagery, Content, Usefulness, and Fun, Molded into the Shape of a Tutorial", you get my vote, and a Firm handshake! That is one Solid tutorial. ~Danika. ...Oh, did I say Thank You? :)
    • Posted: February 29, 2020 05:18

      acraftymix

      Baie, baie dankie David 🤗
  • Posted: February 25, 2020 02:42

    Andrea Durbin

    Ok so my kids and I tried this and successfully made three molds, super glued them back together, and for the life of us could NOT get the cement to pour in order to fill the mold. We tried three different ways, using 5 parts cement to 1 part water according to the instructions, then kept having to add more water since the cement was so thick it simply wouldn’t pour into the hole. We can’t seem to get the molds full without making a watery mess that won’t set. We are using Quikrete. How on earth do you get the cement into the mold to fill it completely? Help!
    • Posted: February 26, 2020 05:37

      acraftymix

      Hi there, Andrea so sorry you're having problems getting the cement inside your molds. I've never used Quikrete, it's not available here in South Africa, but there are a few things you can try. First off, check that the pouring hole is big enough. Enlarge it a little if you need to. You can always use a small bit of concrete after your form has set to shape it. Thinning down the mixture helps too, but it seems you've already tried that. I also find that the smoother the concrete (less coarse/rough) the better. If Qikcrete has larger bits, try mixing in a little fine sand or fly ash. I'm not sure what that will do to the setting time and strength though, you'll have to play around a bit. While filling the mold make sure you tap it all over so all the air bubbles can escape. You can also try slush pouring the concrete into the mold in layers. For a slush pour, you'll need a mixture that's about the consistency of soft-serve ice cream, that's just started melting. Pour a little of the mixture inside and twirl the mold around so the concrete covers the mold completely. Wait for it to dry and add another layer. Repeat until your mold is filled. Depending on the form your molding it may be better to not glue the two bits together and rather pour the concrete into the two halves and then once it's set, use a little concrete to join them together.
  • Posted: February 21, 2020 01:52

    Jackie mcclure

    I make model hotrod cars and had some parts like scoops and fender skirts i ve wanting to copy. So i made a.mold and i ve turned out about 25.parts already. So thank u very much for the mold idea. Also i made them out of silicone and a drop or 2 of food coloring will do a great job of coloring the silicone. Do u have a better idea to do it. I sincerily thank u so much. At 81, it helps keep me active.
    • Posted: February 21, 2020 07:48

      acraftymix

      Ahhhhh Jackie, you have no idea how much your comment means to me. Thank you for making my day so much more special. I'm over the moon that you're using the mold for your hotrods. That must be such a fascinating hobby. Kudo to you ❣
  • Posted: January 29, 2020 04:30

    Kathleen

    How would you mold around a cement form?
    • Posted: January 29, 2020 04:56

      acraftymix

      Hi there Kathleen, the silicone mold works great on concrete. You would just wrap it around the concrete form in the same way as we did the pear. Enjoy playing around with the recipe, once you've done the first one it becomes a little addictive and everything looks moldable 😃
  • Posted: January 22, 2020 19:43

    Erin

    Hello! Quick question: so you super glue the mold back together after slicing it to release the (CUTE!) pear but. Then you pour concrete in. Then slice the super glued area open again to release the concrete? I want to make four casts out of my mold and just want to make sure that it won’t get wonky after glueing, slicing, casting, etc..... thank you!!! You made it look so easy!! :)
    • Posted: January 23, 2020 05:01

      acraftymix

      😘 Your mold shouldn't get wonky Erin. Just use a thin sharp knife to cut it open again and slice carefully 😉 We used the recipe to mold a really cute doorknob for our fairy cloches and I can't even remember how many we've made with the one mold, and they all turned out perfectly.
      • Posted: February 20, 2020 07:38

        dave

        i would suggest using contact adhesive....no need to cut....contact adhesive is pliable and will seperate easy
        • Posted: February 20, 2020 09:28

          acraftymix

          Thanks so much for that Dave. I never even thought of using contact adhesive, but I will most definitely try it next time/
  • Posted: January 21, 2020 00:07

    María Eugenia García Blazeski

    You have excellent ideas. Please tell me, if I wanted to make a mold for a bird, what can I do_ thank you very much
    • Posted: January 21, 2020 05:13

      acraftymix

      Hey there Maria, it depends on how detailed your bird is. The silicone mold is great for picking up tiny intricate details but if it's difficult to unmold after it's dried then you could lose some of those details. I would look at the bird and probably place the silicone all around leaving a hole at the bottom (I'm assuming the bird is sitting?). You are welcome to send me an email with a picture of the bird and I can have a look.
      • Posted: February 22, 2020 21:54

        Bonn

        I'm dying to try this to make some original looking molds for my soap making. Thanks so much for sharing!
        • Posted: February 23, 2020 06:00

          acraftymix

          Oooooo I need to try that too Bonn. What a lovely way to use the molds
  • Posted: January 19, 2020 00:18

    Cara Finlayson

    Thank you Michelle... Came across this on my Pinterest feed. Great idea and beautiful end result. I am trying to remove as much plastic as possible from my life and you inspired me to find out where silicone lands in terms of environmental impact.I'm including a link to an article that does a great job of answering this question: https://livegreen.recyclebank.com/column/because-you-asked/what-is-silicone-and-how-green-is-it I was really happy to find out Silicone is not plastic and not fossil fuel based. Thank you so much for posting this project. Cara - Portland, Oregon
    • Posted: January 19, 2020 04:45

      acraftymix

      You are most welcome Cara and thank you so much for the link too. What an amazing website. I really wish we would all become more "earth" aware. We are destroying our beautiful planet and we don't have another one to fall back on. She is the only home we have 💞
  • Posted: January 2, 2020 07:21

    Michael

    Cute! This looks simple to do. I think this will be a perfect activity for the kids. Thanks!
    • Posted: January 5, 2020 05:18

      acraftymix

      You're most welcome, Micheal. Kids will definitely enjoy making the molds and you could always let them mold one of their favorite toys too as we did with an old doll here - https://acraftymix.com/blog/wood-nymph-garden-ornament/
  • Posted: January 1, 2020 18:16

    Maggie Martin

    Pear Butt Mold! Love it!
  • Posted: December 22, 2019 20:21

    Ladybug

    Hello, Thank you for all of your ideas. I am going to try making a mold hopefully in the next week or so. I have an aggressive form of MS. I love the projects that have less ingredients, so I don't have to move a lot of ingredients around. Since it is hard for me to walk, having all these great craft ideas are so wonderful. My husband and I thank you very much. (He says your ideas and then mine keep me at least in one area.)🤪🤪
    • Posted: December 23, 2019 14:46

      acraftymix

      💓 You are most welcome and I know you're going to have so much fun making your molds. MS is a nasty thing to happen to anyone. Sending you a BIG virtual hug 💓 I wish I could be closer to sit with you and make stuff
  • Posted: November 30, 2019 06:08

    Adele

    Thank you Michelle! I live in South Africa and it's refreshing to see products that are common household products in a South African household. Oh my gosh, I can't wait to try, but life is in the way at the moment, got a go to work.😖 But I'm on to you girl, you have yet another follower!
    • Posted: November 30, 2019 08:40

      acraftymix

      😍 Well hello Adele and thanks so much for following along on our crafting journey. So happy you found us in the big internet world. It does get frustrating when you see beautiful crafts and we can't get the products here in South Africa. You're going to love playing with this mold and it's so affordable too. Hope you had a lekker day at work and enjoy making all kinds of things.
  • Posted: November 29, 2019 05:12

    Melissa

    Looks beautiful. Did you do anything to the cement to get the finish you have. Maybe it’s just the photo but it looks a different colour to raw cement. Love your work.
    • Posted: November 29, 2019 05:31

      acraftymix

      Thank you so much Melissa. I did use a concrete stain on the pear after it was cast. If I remember correctly it was an iron-based stain similar to the one I used on the concrete pumpkins (https://acraftymix.com/blog/stained-concrete-pumpkin-planter/)
  • Posted: November 24, 2019 18:40

    Tara Robinett

    I love this!! Would this silicone mix work to be poured onto an object for a flat mold?
    • Posted: November 25, 2019 04:08

      acraftymix

      It would yes 👍 We used it to make a wood nymph. You can see that tutorial here - https://acraftymix.com/blog/wood-nymph-garden-ornament/
  • Posted: November 19, 2019 00:10

    Marjorie Gladish

    Michelle--Im thinking of using this type of mold to make stuff out of liquid polymer clay...can it be safely baked in an oven while the clay is still inside the mold? ...LOVE this stuff! --Marjie in Illinois
    • Posted: November 19, 2019 04:52

      acraftymix

      Oh my Majorie, that's a very interesting question. I have no idea. I've never tried to bake something inside the mold. Mmmmm, I do have a green pepper mold lying around some air-dry clay. Let me test it for you and I'll let you know.
      • Posted: November 25, 2019 19:04

        Trish

        Absolutely not! A chemical reaction will occur with silicone when heated . Will blister and ruin your project.
        • Posted: November 28, 2019 05:26

          acraftymix

          Thanks so much for that Trish. I did find some heat resistant silicone which might work. Apparently it's heat stable up to 300 degrees celsius. It's a bit more expensive than the ones I normally buy but I'm keen to test it out. I'll let you guys know how it turns out.
      • Posted: December 6, 2019 01:53

        Naghmana

        Hi can this mold be use for epoxy resin??
        • Posted: December 11, 2019 05:04

          acraftymix

          I've never tried epoxy resin but I don't see why it shouldn't work. I would suggest making a small mold and testing it first though and make sure to mix the silicone and cornstarch really well, so any loose cornstarch bits don't cloud the resin. It will probably wash off too once you've made the mold, but just in case 😉
      • Posted: March 13, 2020 08:39

        Andrena

        Hi. I would like to make a mould for table legs. Can this be done and using fibre glass can the mould be used over andover
        • Posted: March 13, 2020 14:32

          acraftymix

          Yes, the mold will work for table legs. You'll need quite a bit of silicone and cornstarch if you'll be doing a whole life-sized leg and the mold will need to be supported in some way so it doesn't sag. The molds are reusable up to a point, but I think that also depends on the type of silicone used. I still have the pear mold and we've probably made 5 or 6 pears with it. Then there's another one we made with green pepper and I only used that one three times and the 3rd green pepper looked a little lumpy? I've never tried fiberglass, but I don't see why it shouldn't. It works with resin. Have fun and please let me know how it goes Andrena
  • Posted: November 16, 2019 16:03

    Sheryl Elliott

    Silly question...how did you attach the stem? Your pear is absolutely beautiful!
    • Posted: November 16, 2019 17:30

      acraftymix

      I'm so happy you like the pear Sheryl and no question is ever silly. I drilled a hole into the top of the pear and then glued the rusty nail stem inside
  • Posted: November 4, 2019 19:23

    Kathy

    I never knew mold-making could be so simple! Are there substances other than concrete which may be used in this kind of mold?
    • Posted: November 5, 2019 11:55

      acraftymix

      Hey there Kathy, we've used plaster of Paris and resin in the molds and they both work well.
    • Posted: January 20, 2020 20:31

      Trisha

      Absolutely great. Can I use this to create veiners for making clay flower?
      • Posted: January 21, 2020 05:15

        acraftymix

        Yes you can Trisha. The silicone picks up all those tiny details beautifully
  • Posted: October 27, 2019 17:44

    Angela

    Hi, I'm glad I came across this tutorial as the ingredient list is way less than other tutorials I have seen. Do you think this mold would hold up to isomalt usage?
    • Posted: October 28, 2019 04:51

      acraftymix

      Hi Angela, I'm sure it would, just look for food-safe silicone. It's a bit more expensive though. The silicone I used was the really cheap stuff and has a strong vinegar smell, so that's probably not a good idea for isomalt.
  • Posted: October 10, 2019 04:58

    Michael

    This is a good alternative for lack of sculpture supply sometimes! this is a great guide!
    • Posted: February 24, 2020 05:07

      acraftymix

      Thank you so much, Micheal. We use the mold all the time and it works out so much cheaper too
  • Posted: October 4, 2019 22:21

    Therea

    I have a question-do you think this could work on larger objects? Trying to make a mold for a moose horn to use for a memorial for my late father-in-law? Would it work w/large box/crate?
    • Posted: October 5, 2019 04:49

      acraftymix

      🤔 I'm not sure Therea. The biggest thing we molded was a large cast-iron pot (30 cm tall or about 11,5"). We had use a lot of silicone and cornstarch to make the mold so it was strong enough to hold the concrete we put inside. The mold had to be mixed in batches so it didn't dry out too. I've never seen a moose but I believe they're really big and looking at pictures of their horns you'll have to think carefully about how to cut the mold off so it can be joined together again. They're quite intricate with all those curls and whirls. I hope that makes sense and I'm so sorry for the loss of your father-in-law 💞
  • Posted: September 1, 2019 21:51

    Wanda Aponte De Jesus

    Thank you so much for the support and time you have taken to write the material and instructions for the project. Pics and all. Love it. Plz let me know of any other ideas and projects.
    • Posted: September 2, 2019 05:24

      acraftymix

      You are most welcome Wanda, so happy you enjoyed the tutorial. You are welcome to subscribe to our newsletter. The button should be on the right if you're on a laptop or desktop and down at the bottom of the screen if you're on mobile
  • Posted: July 22, 2019 20:53

    Anonymous

    Hi Michelle, Thank you for lifting my spirit. i'm an addicted crafter like you. Use to make teeth out of porcelain and gold and other metals. Well the crafter in me started to take impressions with dental materials. The victims were herbs little branches with berries, insects. Yes anything small that would fit in the casting machine. what fun and cute and beautiful things I made. I all so made castings with alginate impression materials and plaster of my sons face when he was 15. He still has it. NOW your impression material is much cheaper and I am retired now, so this is just for me. I have a little trick to make things rust fast. Vinegar and salt 2:1. Spray or dip iron things leave 24 to 48 hours, you have rust. Now a question? what paint and technique did you use for the copper drizzle? Thank you again I'm following you.
    • Posted: July 23, 2019 05:08

      acraftymix

      💓 And you just made my day. I so enjoy getting beautiful comments like yours. Wow, those casting that you did sound so incredibly interesting. I wish I could see them. You have my mind going all over the place right now, just thinking about all the fun, natural stuff out there I can experiment with. Thank you so much for the salt and vinegar recipe too. I'm going to give it a try. WRT the paint, I used copper acrylic paint and poured it on in layers, waiting for each layer to dry so it could have some "depth".
      • Posted: September 28, 2019 01:15

        Karla Toles

        Thank you for the inspiration. I have a small ceramic turtle I want to make from cement. I hope I can do as good as job as you did. I'm apprehensive to make the mold because of how my turtle has the legs and head. Unlike the the pair that is just one solid cavity.
        • Posted: September 28, 2019 05:09

          acraftymix

          Hey there Karla, I'm sure your turtle will turn out beautifully. You may need to figure out where the cut the mold off. It's difficult to give advice without a picture of the little turtle but I would try cutting the mold around her middle if that makes any sense. So you'll end up with a front half and a back half. You can leave a hole at the top for pouring the cement. That way it will fall into the legs first. Be sure to shake her around every time you add more cement so it goes into all the nooks and crannies and her head area. I'm not sure if you saw the wood nymph that we made using the same mold - https://acraftymix.com/blog/wood-nymph-garden-ornament/. She's about 1 1/2" (4cm) and all the details are spot on, even her teeny, tiny little nostrils. Just experiment and have fun.
  • Posted: July 8, 2018 18:38

    Kathleen

    You sure were right about the pear butt! What a clever and attractive paperweight. Using the rusty nail and scrap tin for the stalk and leaf is genius at work. Just beautiful!
    • Posted: July 9, 2018 06:03

      acraftymix

      Thanks so much Kathleen. 🙂 Isn't that pear butt just the cutest thing ever.
  • Posted: May 28, 2018 22:06

    Susan

    What a wonderful idea! .... and the result is fantastic. The mind boggles with ideas that you could use this for. I'm in awe of your blog and your creativity (I'll have some of what she's having :) - I'm signing up to your Twitter so I don't miss anything.
    • Posted: May 29, 2018 09:16

      acraftymix

      🙂Thanks so much for that Susan and I'm sure with all the beautiful pieces you create you are going to make some amazing molds
  • Posted: May 21, 2018 12:28

    Julia - Vintage with Laces

    Oh Michelle, I've somehow missed this post. This is sooooo cool! I had no idea that you can make a mold with these ingredients. Thank you so much for sharing! Right now I don't have an idea for a mold but I will certainly keep this method in mind.
    • Posted: May 21, 2018 13:35

      acraftymix

      It'