DIY Buck Teeth

DIY Buck Teeth- SFX basics

A fun and sometimes vital part of cosplay is learning how to accentuate your character with the finer details. This can mean embellishing your foam armor with bevels and shading or it could mean adding buck teeth to your Chuckie Finster cosplay. I personally didn’t do this for mine, but I thought it would be fun (and useful) to figure out the best method for DIY buck teeth.

You would think that constructing your own false set of teeth would be easy in comparison to foam smithing and sewing, right? Well, then you would be…


Now, I will say that this is a more tedious method, but it works wonderfully. The products might not be something that is in your typical cosplay toolbox, but I do recommend each and every one of these products for your arsenal.

Here’s What You’ll Need

    • Insta Morph Moldable Plastic

Yes, that is literally it.

About InstaMorph

How the heck do you expect to know how to use moldable plastic without knowing what it is first?

Here’s the product description:

InstaMorph is an advanced modeling compound that becomes moldable when warm (150 deg F) and solidifies at room temperature. It’s made out of a lightweight polyester thermoplastic which acts like clay when warm, but when it cools, it’s a strong plastic. Unlike other products that once they dry they are locked in that shape forever, InstaMorph can be reheated over and over again and re-molded into any number of configurations.

RELATED: SFX Basics: Rigid Collodion

InstaMorph Safety Warnings!

InstaMorph is a non-toxic substance, so it is completely safe to put into your mouth.


InstaMorph does come with a Choking Hazard label, specifically stating, “Small parts. Not for children under 3 yrs.”

RELATED: Chuckie Finster Cosplay eBook!

How-To: DIY Buck Teeth

Now that we have that out of the way, here is how you can DIY buck teeth!

(Pics coming soon)

Step 1: Heat water to 140 degrees Fahrenheit (60 degrees Celsius)

I boiled some water, but apparently, microwaving water works just fine.

Step 2: Pour a small amount of InstaMorph beads into the water.

Pro Tip: A little goes a long way. In other words, you don’t need much for two small buck teeth.

Step 3: Wait 2 minutes or until the beads turn clear and start to stick together. I recommend using a wooden spoon to bring the pellets together.

Step 4: Remove from the water and place on a paper towel.

Warning! These are heated plastic so it will be hot.

Step 5: Pat the plastic a little bit and wait a few seconds for it to cool. You’ll notice that the plastic will be flimsy enough to manipulate, but still not in its solid form. It’s kind of a jelly-like material.

Before it dries, place the plastic on your two front teeth and start molding to your teeth.

You may find that you need to add more pellets. All you have to do is stick the teeth right back into the hot water and add more. The new beads will start to gravitate towards the other plastic piece, making it easy to mold the plastic together.

If you need to make your buck teeth less prominent, you can heat the InstaMorph back up until it returns to its jelly-like form and start ripping the plastic apart to make smaller pieces.

Step 6: Let it cool at room temperature (usually takes less than a few minutes). And voila! You have your own custom DIY buck teeth.

The plastic dries white so you don’t have to worry about painting them or anything.

You can use more InstaMorph to create a kind of base for the top of your gums to hold the buck teeth in place, or you can simply glue them on with denture adhesive.

Here are some characters you can use for DIY buck teeth:

  • SpongeBob SquarePants
  • Peter Pan 
  • Chuckie Finster
  • Mater
  • Goofy
  • Varian
  • Lampwick
  • Mac The Hen

More Cosplay SFX

Have questions? Leave them in the comments below!


aka @cosplayandcoffee

Oh hey, guys! My name is Tiffani.

I’m a writer turned cosplayer, under the pseudonym Cosplay and Coffee.

When I’m not writing, I’m drinking unhealthy amounts of coffee so that I can work late into the night on my latest costume.

I host my own YouTube channel, indulge in fandom theories, and spend too much of my day cuddling my pug.

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