How to make your own Dungeons & Dragons chocolate dice mold

Guest post by Ariel Segall
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I've had several people request a tutorial for the Dungeons and Dragons dice mold that I created for Chocolates By Ariel. So, here's my step-by-step tutorial for how to make this:

How to make your own Dungeons and Dragons chocolate dice mold

So that you can make these:

How to make your own Dungeons and Dragons chocolate dice mold

Before we begin, some disclaimers. First and foremost: This is about as complicated and expensive (net cost: $100 + shipping) a mold as you're likely to get, for anything reasonably sized. (Well, unless you want molded daleks complete with little plunger-arms or something else that is fundamentally not a convex shape.) That's because it has a lot of little, tiny, fiddly pieces, and it's a two-piece mold meant to create solid 3D shapes with no flat back. And the little fiddly pieces are of variable depth so you need way more silicone than you would if, say, you were just molding your favorite buttons. Chances are, your mold doesn't need to be this insane. But that's fine! You can still use this tutorial, just skip the pieces that are clearly irrelevant.

Second: I learned how to do this from Not only do they sell all of the materials you need for food-safe custom molds, but they have excellent YouTube tutorials. If you decide to do a project like this, I do encourage you to go look around their site. That goes double if you're doing a one-piece mold of a single object; they have other products that are much easier to use than the liquid stuff for simple projects.

How do make your own D&D chocolate dice mold


  • 7 sets D&D dice
  • 5 lbs two-part liquid molding silicone (NOT latex)
  • 4-5 lbs food-safe modeling clay (you can get away with less, but I'm not that good)
  • Food-safe wax (“Release-Dit” is the silly brand name)
  • A handful of simple 3D objects to make the mold alignment slots/tabs. (I used the flat-bottomed oblong glass marbles we use for counters in board games.)
  • Disposable containers for mixing the silicone in (large Chinese soup containers are great)
  • Sturdy disposable stirrers for stirring the silicone
  • A flat container at least as deep as a standard baking dish, large enough to hold all of your dice spread out; or, more modelling clay, parchment paper, and patience. (Note: you will be shoving modeling clay into said flat container. A smart person would probably not have put modelling clay directly into her good baking dish. Not being a smart person, I can tell you that it's a bitch to clean; you might want to use a disposable container if you can find one that's big enough. You definitely want something with smooth walls, though, because the silicone will ooze into everything.)
  • A kitchen scale, or measuring cups you don't care about (improvised will do, as long as you can evaluate equal amounts of two liquids)
  • A natural bristle paintbrush that you don't mind throwing away when you're done. (Two if you're making a very detailed two-part mold.)

We're going to be molding this in two halves, so that we can separate the halves, fill them, empty them, all that good stuff. However, silicone is thick stuff; we can't just stick the dice in a layer of it (which would be the easy approach), because they'll float rather than staying at the level we want. So instead, we're going to mold from the top down.


You'll want to put a layer of clay into your container that's deep enough to hold all of your dice to the level you want one half of your mold to be. (For everything except d4s, that's “halfway.” For d4s, you're basically going to have the entire volume of the die in one half, and just enough depth to mold the numbers in the other half.) Get the surface reasonably flat and smooth; this will become the model for your mold's dividing surface, and it'll be easier to clean if it's not rough.

How to make your own Dungeons and Dragons chocolate dice mold
Push your alignment markers into the clay, making sure that you have at least one per corner. (I ended up doing five, so that I couldn't accidentally rotate one half of the mold; in this picture, you see six because I wasn't yet sure how much of the clay base I'd need for the dice.)

Then, begin inserting your dice one by one to their dividing line. Make sure to leave at least a quarter inch of space between them at the narrowest spots; any less than that and the silicone may be too wobbly to get a good shape.

How to make your own Dungeons and Dragons chocolate dice mold

You will notice shortly — probably when you get to the d10s — that many dice do not actually have a simple horizontal dividing line between the “top” and “bottom” halves. Instead, they have a jagged edge where the faces meet. This is rather inconvenient, since silicone will creep under any exposed surfaces and create molds that have a little inward divot. We'll just have to live with some of that — after all, that's the shape we're trying to create — but we want to have as little of those fragile lips as possible. (Remember how I said that less than 1/4″ of silicone isn't reliably stable?) So when putting dice in, I found it helpful to use a little extra clay to fill in some of those hollows, just a little bit.

Remember, it's not the end of the world if the final mold surface isn't perfectly flat; we just want it smooth enough to easily scrape/scrub clean.

Once all the dice are inserted, you may discover that your container is too big for your dice after all. If so, build yourself a little clay wall, like so:

How to make your own Dungeons and Dragons chocolate dice mold

This will make sure you only use the silicone you need, and don't waste it filling unnecessary space. Note how the clay there is actually rubbed up to meet the wall of the dish: the silicone is liquid, and *will* get into cracks if you leave any. And then your mold will have little stringy bits, and you'll have to cut them off, and that will just be annoying. So be sure to smooth your edges together.

So you should now have a final “master,” that looks something like this:

How to make your own Dungeons and Dragons chocolate dice mold

(As an aside: Note how mine is crooked and tilts slowly up as it goes left? Yeah, the final mold ended up lopsided too. It's usable, but annoying. Don't do that. Silly me didn't think to look from the side when deciding whether the clay was flat.)

Next, we're going to mix the silicone. With the stuff I used, it's a 50-50 mixture. I did an initial volume estimate in water, divided that in two, and used that to measure the amount of silicone I'd need. Note that I used my good measuring cups for this, figuring that stainless steel would be easy to clean. Unmixed silicone is sticky. Very sticky. Also not water-soluble, and soap is only of limited use. Don't make my mistake; you'll regret it for the next three weeks of scrubbing. Use, say, smaller Chinese soup containers instead. Or use a kitchen scale to get 50-50 weight ratios; it'll be more accurate anyway. Also note that when combining silicone, it is really important to get it well-mixed. If you think it is well-mixed, it's not; scrape out the bottom and sides some more. This stuff is thick and sticky.

How to make your own Dungeons and Dragons chocolate dice mold
You'll want to mix an initial small batch, using a subset of your final volume. This will be used to brush into the cracks and fine details in your master: in this case, to highlight all the numbers on the dice. You'll also want to use it to get a thin coat of silicone around the final surface of the mold: all of the major edges, the top, etc. This is to prevent annoyingly-located bubbles from causing problems with the final casting. (It isn't critical that you get to the edges of the dish; after all, that's just aesthetic.)

How to make your own Dungeons and Dragons chocolate dice mold
Next, mix the rest of the silicone for this half, and pour it in, as far from the critical components as you can without splashing. Make sure to fill to a depth of at least 1/4″ beyond your tallest object; make a note on the side of the container before pouring if you need to. You'll end up with something that looks (with my silicone, anyway) disturbingly like a casserole dish full of Velveeta.

Let it sit for at least four hours, or whatever it says with the instructions for your silicone. Overnight works great. When it's done, it should be solid, not even a little bit sticky, and if you press it with something thin like a coin, it'll just spring immediately back into shape without leaving even a temporary dent. In other words, it'll look and feel like solid silicone. Remove it from your container; don't worry about prying a bit, it's tough. Peel off any clay that's stuck to it, and voila:

How to make your own Dungeons and Dragons chocolate dice mold

How to make your own Dungeons and Dragons chocolate dice mold

You've got half of your mold! If you want something with flat bottoms — say, you want to decorate your cake with half-dice, or whatever — you can stop now. Otherwise, on to Part Two!


First, liberally coat your shiny new mold with your Release-Dit or other handy-dandy wax. Wipe off the excess; you just need enough that the next batch of silicone won't stick to itself, not so much that you get lumps where the wax was. And then go through and put all of those dice back into the mold, being sure to align the numbers correctly. (You may need to rub them down in paper towels to clean the excess clay off; remember, you want those numbers clear!) Do NOT put your alignment components back in: the whole idea is that you'll have a raised piece of silicone in the other half of the mold that you can slot in when you're creating your real objects.

Put the mold back into the container, once you've removed the clay; or, if the container didn't have straight sides so your mold won't fit, or if you forgot to put plastic wrap at the bottom of the container so you get fed up trying to get the clay back out (oops), put the mold on a piece of parchment paper big enough to protect your table from leaks and splashes, and use that extra clay to build a wall around it on all four sides, remembering to smooth the clay to prevent leaks. (Sorry, didn't get a work-in-progress photo of this one.)

Use the same technique as before to mix a little silicone and cover the surfaces and details, then a large batch to fill in. Let set, and voila:

How to make your own Dungeons and Dragons chocolate dice mold

Remove the dice, clean off clay and wax with a quick scrub in the sink (non-scratching sponges only!), and you're ready to go. You may see a few flimsy little raised edges in the new half, from where silicone leaked under dice without the clay barrier; you can use an X-acto knife or small sharp scissors to cut those off, but small firmly attached ones won't do you any harm.

And there you have it: one 3D mold for D&D chocolate dice.

How to make your own Dungeons and Dragons chocolate dice mold

And if you end up deciding that this is way too insane, but you desperately want D&D dice anyway…

D20 chocolate dice pops!

Comments on How to make your own Dungeons & Dragons chocolate dice mold

  1. Amazing! I’m totally inspired to try making a bunch of different molds now!

  2. I am really confused by the last picture. Why are they bright orange underneath the chocolate? They look like dice covered in chocolate rather than chocolate dice.

    I just sent this to all my DnD playing friends and they loved it, but I may agree that it would take a very special occassion for me to actually do it!

    • The orange isn’t underneath the chocolate; it’s on top! That was part of an experiment in coloring the dice. It’s colored cocoa butter that I painted the inside of the mold with in various designs. (Think thin chocolate paint.)

      And yes, they do look like real dice colored like that, don’t they? I really like the effect.

  3. How do you get the chocolate in the completed mold without building in pour spouts?

    • There are several ways, but the way I’ve found is easiest is to just put tempered chocolate in both halves to *just* over the line and then squash the mold together very firmly. Unless you’re working very slowly or in a cold environment, at least one half of the chocolate will still be liquid enough to flow and stick the halves together; unless your chocolate is very warm and you’re working very quickly, it will be too viscuous to pour everywhere and make a huge mess. If you take this route, a couple of warnings: you’ll want to be careful when you lay the top half over the bottom to trap as few air bubbles as possible between the halves; you’ll want to shake and tap the mold a bunch before you squish it all the way together to chase the small bubbles out; and you’ll want to do this on a big piece of parchment paper, because there *will* be drippy (tasty) mess.

      Pour spouts work great for bigger pieces, but on something this small and for a material as thick as chocolate it didn’t seem like a good idea.

      • I work with hard candies from time to time, and a D20 would be fantastic to have a mold for… still trying to figure out how to get them into a mold like this mold though. i think pour spouts would be the only way.. as candy probably dosn’t smush together as nicely as chocolate. recommendations?

        • I played with casting chalkware from candy molds for several years. I’d go with pour spouts too but another options would be to fill both halves, let them set up and then paint a ‘slurry’ over them (or in this case just enough warmed chocolate or candy to do the trick), and use that as the “glue” when you put the halves together.

          This was an interesting tutorial. I’ve made my own molds on a much smaller scale but haven’t worked with silicone. Thanks, I enjoyed reading about the authors adventures!

      • How safe is it to heat or warm the silicone molds? I’m thinking a way to make sure that it all sticks together with minimal mess would be to warm the chocolate in the mold after it has started to set up.

        • They’re safe up to I think 400 or so? The problem is getting the chocolate to be soft enough to stick together without losing the temper. If you use candy melt, you’ll have an easier time.

          That said, I’ve also found a wonderful new trick: rubber-coated baby spoons! They’re exactly the right size to fill standard dice molds, so I can do them at three times the speed I used to manage, and I no longer have nearly the same kind of problems with the dice setting too fast.

  4. So, looking at your site… would you be able or willing to do something like this in a vegan chocolate?

    • This is here as a fun how-to, not a business ad; contact me via the website listed in the author section, it has an appropriate e-mail address. (Short answer: Yes, vegan chocolate is easy as long as you like dark. It’s in the FAQ, I believe.)

    • I was about to ask the same question :). Are you doing these? I so NEED to! 🙂

  5. Most importantly, how well do they roll?

    I think the appropriate action is to use them in a game and whenever they roll a 1 you eat them.

  6. OMG our dice! 😀 These were as fantastic as they look, and twice as delicious. Our guests absolutely loved them, even the people who had no idea what they were, lol!

    Pics from our reception:

    They didn’t roll completely perfectly, but they were good enough to have fun with at the reception. And then we ate them. 😉

    Thanks again, Ariel! 😀

    • whoa. “White chocolate pumpkin spice” ALMOST makes me want to try white chocolate!

      • It was SO good, and I don’t usually like white chocolate! This was good stuff, not the cheap stuff you buy at Easter. Yum!

        (Comment reply fail, trying again!)

      • white chocolate is great for flavoring because it has the texture of chocolate but takes flavoring/coloring easier

  7. “You will notice shortly — probably when you get to the d10s — that many dice do not actually have a simple horizontal dividing line between the “top” and “bottom” halves. Instead, they have a jagged edge where the faces meet.”

    What about putting the d10’s sideways?

    • OK, I now have *data*! I made another mold, and have discovered that I was right the first time about how to handle d10s, but wrong about the reasons. The nice thing about doing the d10s vertically and making the silicone uneven to match the uneven edges of the dice is that it makes the inevitable molding lines blend in with the rounded center-edge of the dice. (This obviously doesn’t apply if you’re using the more accurate crystal dice, but hey; I was going for iconic looks, not good odds.) If you leave the silicone flat, or put the d10s sideways, you’ll get at least one molding line in the middle of a face, which shows a *lot* more and generally makes the die look less well-put-together.

  8. Important note when working with silicone – while it can be helpful to wear gloves while mixing/pouring do NOT wear latex ones, or let latex near the curing silicone, or it won’t cure completely and then you’ve wasted good $$ in unusable molds

    • most places that sel disposable latex gloves also sell thin plastic ones and or vinyl also the Purple ones you see being used on tv shows recntly arnt Latex either there some other material that has become popular BECAUSE it’s just as pliant as latex but it’s inert

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