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Why not be able to share your great designs by making a mold from them?! My huge face sculpture will now be able to be duplicated as I’m sure you have a few spots in your garden that could use a bit of ‘personality’! Each one will be unique even though they are cast from the same mold. One of the easiest casting projects to make your own mossy DIY Concrete Face Garden Sculpture Mold.

You will need some type of mask or one that you made yourself (like mine here) It was not as difficult as it may seem; you can interpret a face so many ways to be completely original and even more ‘artsy’! Myself, go big or go home!

DIY Concrete Face Mold Supplies:

  • Your original ‘Sculpture’
  • Large (non precious) bowl
  • 100% Silicone Caulking (I used 3 tubes)
  • Corn Starch (3 boxes)
  • Caulking gun & xacto knife
  • rubber/nitrile gloves
  • rolling pin


Step #1; Get the form ready

I have not added any release agent such as grease or spray to my original shape. (yes I like to live dangerously sometimes) However feel free if you suspect that your surface is going to be sticking.

This concrete is somewhat rough but I also did not like the idea of greasy film on either piece. IF, you would like to add some, I would NOT suggest any cooking spray. I like using a stiff mixture of beeswax and petroleum jelly (vaseline), and scrubbing it in with a stiff brush if you want a release agent.

Step #2; Make your Molding material

I have had much success with this method of mixing 100% silicone caulking with cornstarch. It will create a rather stiff but still flexible mold. Squeeze about as much as you think you will need (may mix up more to add if needed) This large mask used about 3 tubes total. DO have good ventilation for this as the fumes from the caulking (vinegar smell) is quite strong.

Work the cornstarch into the caulking gently and keeping it as one mound. Try to keep starch between your fingers and the caulking (like working with bread dough) Keep adding and working until it starts to lose it’s stickiness. It will set fairly quickly once it does so be aware.


Give the mix a good kneading to make a consistent dough (yes, I used to work at a bakery).

To make covering this large area easier I rolled the ‘dough’ with a rolling pin. A thickness of about 1/4″ – 3/8″ was my goal. Feels almost like making a pie…

Step #3; Cover your form

I then transfer the slab to the shape and work it into the details. You will feel if you are thinning it too much and edges start to poke through, manipulate the ‘dough’ to cover.

I had run out of caulking and had to go to the store (duh, not the best idea) and then added more afterward. It joined quite well. However if there is a repair or join that you need to make use some caulking directly as a ‘glue’.

Once it is set; does not ‘squish’ when poked, it has cured. Start to peel back the edges and carefully work around all directions. It was quite ‘attached’ since I used no release agent but I was able to slowly pull it up without breaking.

Step #4; Casting the concrete

Since this mold is fairly thin you will need to provide some support for it. I dumped a couple bags of sand on the ground and wetted it. I can then nestle the mold nicely into it and it will hold the shape. FYI; historically, sandcasting was used quite often, even with molten iron.

I casted quite a few ‘faces’… I used the Rapidset Cementall entirely, a mix with reinforcing fibres and a mix with some peat moss. All castings worked successfully.

I like the rustic textured concrete look so added the peat into the concrete mix. It is already a very strong concrete to this did not weaken it too much.

It now resembles hypertufa and is also lighter. Since this will not be that thick weight was not the issue.

I have also used some colour  to add some ‘age’ to the really white concrete. You can customize as you like.

To distribute the concrete, just plop an even amount around the mold. The goal is to have the edges look broken, as if it was part of an ancient old sculpture that fallen to the ground. Varying the edges will also create different looks.

Smooth it into the crevices and aim for about 1/4″ – 3/8″ thickness. I am not too concerned about bubbles as it adds to the rustic texture.

I have not used a mold release (again) so gently work to peel it out of the mold. When I used to use the spray it left residue that I did not like at all. It may take a bit more manipulating however it will be clean!

There! I like the shapes, the broken edges, and the old-looking texture! However… I want moss on them!

I’m not a ‘pink flamingo gal’. Garden art should look like it ‘belongs’ to the setting. It should feel natural, related to the media and colours… Like a pondering ‘rock’.


Evoking some simple thoughts…

‘Hidden like archeological find. From what century did it belong?!

Yes, moss! But this post already long enough, so it will be posted soon separately. Go… make your own DIY Concrete Face Garden Sculpture!

I'm an artist & I make things... all kinds of things.

This Post Has 60 Comments

      1. You mentioned you are now selling the mold for the xl face. How do I find out pricing and purchase?

        1. No, sorry I do not sell the mold. I’m pretty sure most artists don’t fathom that their sculpture could be multiplied uncontrollably. My intention is to provide the help to make your own. Good Luck!

          1. Thanks for the interest. Since that is a mold of MY sculpture, by selling it I would then lose how many can be reproduced from it, hundreds or more… For that reason it would be quite expensive. If you want to make an offer, email me.

  1. Barb, Thank you so much for posting the second part of your tutorial and thank you for sharing your knowledge. I love your rock teeth also and am going to try that also. 🙂

  2. Would love to mold my own face and others in family. How would I go about this? Great art you have created.

    1. If you are thinking of making a mold of your face, it IS possible. The amazing thing to use is alginate (like what dentists use) I used it for the life casting of the concrete hands It may be a bit tricky getting set up and managing to breath through a straw etc… Search ‘life casting’ and you will be amazed. Concrete can be poured into the alginate but you can only use it as a mold once. Good luck!

      1. Love Love Love this! I’m going to try it! Thank you!

        A thought on the alginate mold: If you make the alginate mold, then make a smooth plaster casting to the mold, THEN MAKE A MOLD FROM THE CASTING with your silicone/cornstarch mixture, you will then have a re-usable mold. 🙂


        1. Great minds think alike! Yup, that works: as I used that method for the life cast hands. It allows some ‘adjusting’ in the plaster stage. You can also make a ‘master’ with polymer clay like the bunny There are a lot of possibilities! That face is REALLY big, so I could not use the life casting method. Would love to see your result… Good luck

  3. I’m so glad I came across your blog. I’ve been wanting to make garden faces for awhile now and this is a nice tutorial on how to do it. I’m curious about clean up, I’ve been hesitant to work with cement as I just don’t know what do you do with leftover if you mix too much. I love all of your ideas.

    1. Have you checked out my ‘tips post‘? I usually make small batches, especially when using the Rapidset Cementall as it sets so quick. If I need more I just mix some up. If I have extra I tend to make some ‘patties’ on a flat surface. I use these as sanding discs when hard. If I have too much I grab a couple leaves and make some small leaves to use as accents in my terrariums or garden.

      I don’t wash the mixing container, I let it harden and then knock it out…

      If you are new to concrete, maybe a small project like the bowls or the coasters

      Good luck

  4. Hi, great tips, thank you very much. I just made a really detailed mould of a Buddha face and am pleased with it. However, I would like to add a bit more around the edges where some detail wasn’t captured. Can I just mix some more and glue it where I want the extra detail?

    1. I had something like that happen to me when I had to go buy more in the middle. I find this mix does not stick to much, as most of the time I don’t even use a release agent. When I did the second addition it stuck pretty well. I inspected it well and saw there were a few spots where it would show a thin crack of the 2 different mixes. I just used a tiny bit of the silicone straight from the tube to use as the ‘glue’ and it adhered them well. Hope that helps. Glad to hear you gave it a shot!

  5. Probably my all time favorite tutorial ever! If mine turn out half as beautiful as yours I’ll be thrilled with it. Thank you SO much for posting this.

    1. So far I have used my 1 face mold multiple times and ways, and it is quite large. Shipping tends to make it not worth the trouble since it costs so much and pieces get broken (sadly just lost a piece that got smashed during shipping)

  6. Hi Barb
    I am thrilled to read your tutorials and to watch all your art. So far I have focused on the fabulous garden faces. I would LOVE to make some for myself ( or even as gifts if they get good enough ). I’m amazed by your art. You are a very creative and talented artist. I am so happy I found your blog. Thank you for sharing your art and tutorials. It is a blessing to be able to soak inspiration from talented artists. It is impressing that you take time to share and even replying to the comments. Thank you so MUCH !!!
    Hugs from Monica

    1. Awe, thanks! Yes, it’s been a lot of work! And sometimes I get quite weary, but I am a very stubborn artist! So enjoy while you can… Hopefully it will be worth it soon!

  7. I would like to use the face as the front of a cement pot… can I either cut out a piece of a plastic bowl/ tub and attach the face mold with duct tape? Or I thought of using a bag with a bowl in it for the mold?

    1. That will be a tough project as you need to also consider how you will get it out when done. Maybe it’s best to make a full mold with the face in place so that you can make some seams for taking it out. Depending on the size you can relate it to this project There does come a point where a mold will need to be supported to hold the weight of concrete. Good luck

  8. I ABSOLUTELY love this idea and your wonderful tutorial! Thank you, so much, for sharing it! I love these kinds of decorations, for the yard, but they’re so expensive at the store or I can’t find what I’m looking for. Now, with your tutorial, I can make exactly what I want! I have a question, Have you tried or do you know if Saran Wrap/Thin Plastic would work, in between the concrete and silicone mold, to release the concrete from the mold easier? Thank you for taking the time to share your ideas and tutorials! I made sure to subscribe to your mailing list, so I can keep up to date with your latest projects.

    1. I have not tried that since I think it would be too visible. I find that the silicone does not stick completely, and can be worked off. Some actually use ‘Pam’ or some type of grease/wax. I don’t like what it does to the mold so I just go ‘naked’ and work the mold off. Happy making!

  9. Would you do a video tutorial on each step on making these faces, I’m a watch it made type of person. Please

  10. Thank you, I have loved this! …. been feeling so inspired, making a collection of varied sleeping faces for my garden … the only problem is knowing where to stop!! Love your ideas.

    1. Ok, I know that feeling!!! I tend to NOT stop as each project does lead to another version! Cool thing is the overall shape can be adjusted each pour to make them look even different! Out I go to work on the latest project!

  11. Hi everyone. I’m relatively new to 3d printing and I have many questions on the matter, so I hope you will not get mad at me for asking here at least couple of them. I think before I’ll get seriously into designing I should focus on the software itself, and that’s what I would like to ask you about. Mainly, should I look for the most simple/crudest software there is or would it be better to look for something more complicated? I’m worried that I’ll get some undesirable habits while working on simpler software. Right now I am trying out some online software called SelfCAD (I didn’t have to download anything). I’ve read some good opinions about it, but maybe you could share yours as well? The second question is about the CAD software as well: should I look for program that would let me design and slice it in it, or should I use a different program for each? The one I’m suing allows me to do both i it. Does it even make a difference? Weirdly, I couldn’t find the answer to that, as it seems like most blogs and sites want to focus on the very basics (like what is 3d printing and so on), and while the answers to those questions are fine, it seems like no one wants to go into the details (it looks like some of them even steal from each other! I swear I’ve read the same answers to the same questions on at least 3 different blogs) but I’m getting off-topic… The last question is about 3d pens. Would it be possible to somehow convert whatever I draw with a 3d pen to a 3d model in a software? For example, if I’ll draw a car with 3d pen, would it be possible to get its design in a software? I’m not sure how that would even work, but the very idea sounds appealing to me. Anyway, I think I’ll stop here just in case no one will ever answer me and all of this writing will be for nothing. I apologise that I’m using your content to ask questions, but I hope you’ll understand and help a newbie like me. Anyway, thank you for posting. I did learn something from this and that’s always appreciated. Thank you, and I hope to hear back from you very soon 🙂

    1. Wow, that sounds like it will be quite fun! This project is however NOT 3D printed in any way; it’s all hand-made with real hands! I have yet to jump into the 3D realm but I already have so much on the go that I will probably not. I like the feeling of ‘matter’ in my hands to make what’s in my mind! Good luck. Maybe you should check out Have fun!

  12. Have you tried to form a complete mask and break it? Just curious if it has a different, more realistic edge vs one where the concrete just stops.

    I’ve got my silicone, cornstarch sitting on the concrete now. We’ll see how it turns out. I’m concerned that I had too much cornstarch, and not enough silicone…. Fingers crossed!

    1. No I have not but I find that sometimes I use some pliers to ‘nibble-break the edges as in the monster eggs I’ve even mixed in some peat in one to get a more rustic finish, and it worked as well. I use the rapidset cementall as it can still be strong enough at a very think thickness. Good luck

    1. No! That is not a corn starch, and has water in it. Cornstarch is very dry and powdery and somehow creates that ‘putty-like’ consistency.

  13. I am so inspired! Your artwork is amazing and I love the easy to follow instructions with the comments. It’s good to know it’s OK to make mistakes and experiment. Speaking of experimenting, I failed to note you made the mold in part 1. So….. This past week I have been crafting my base from a large box, newspaper, and LOTS of masking tape. At first, she looked like the Joker with a creepy smirk, so I gave her bigger lips. Then I thought she looked like an angry Roman soldier, softened her mouth and eyes. She was still too manly. I rounded out her square chin. She is kind of pretty. I wish I had her lips.
    I plan to cover her in paper mache clay and let it harden before I do the silicone mold. This is so fun! Thank you for sharing your talents and experiences! This is so entertaining.

    1. Sounds like you are having fun! That’s the important thing. Just make sure the mold material (silicone/corn starch does not stick to the papermaché, use a mold release) Best of luck!

  14. Would it be possible to use the Quickcrete Rapid set cement used for fence posts? It is 1/5 the cost of the cement-all. Or does the Cement-all have special characteristics making it better. (I do use the Cement-all for other projects)

  15. VERY Cool! I want to learn how to make these for my own garden. I’ve made dish flowers and totems which has only whet my appetite to do more things with glass and also move into concrete garden art. I LOVE the human form in the garden.

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