The 7 Best Heat Moldable plastics (2023 reviews)

We consider a heat moldable plastic to be a worthy investment in the long run. We are here to help you choose the right one for your purposes from all the best available products in market today.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Instamorph STRONG Plastic READ REVIEW

Best For arts: Buy: Materialix melted Plastic READ REVIEW

Best For So many crafts: Buy: Whitemorph polymer Putty READ REVIEW

Best For broken Plastic stuff: Buy: cloudvalley Heat Moldable Plastic READ REVIEW

Best For temporary retainer: Buy: Instamorph Heat Moldable Plastic READ REVIEW

Best molding Plastic: Buy: Materialix Heat Moldable Plastic READ REVIEW

Best For Repairs: Buy: Whitemorph Heat Moldable Plastic READ REVIEW

Best Overall: Instamorph STRONG Plastic

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Here, we present plastic that manages to win our hearts. It's the instamorph strong plastic and it's widely considered as one of all-around great plastic you can buy. It doesn't sand well or look good after sanding, but careful reheating clears the fuzzy sanding look. It turns into a clear lump that is moldable. It hardens quickly, and is easy to use. It gets moldable at 140 degrees. It's great for making false teeth, props, hair accessories, goggles, and much more. It comes in white pellets that you pour into hot water and then leave it for 2 minutes. It will try and stick if it's at the right temperature.

• Comes as little translucent white beads, the size of a lentil or so
• Super awesome for prototyping and home projects
• Great for cosplay and prop making
• Easy to mold and even sand

Best For arts: Materialix melted Plastic

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Materialix has been making great plastic for years, thanks to a combination of clever design and appropriate materials. It becomes a sticky ball of goo which hardens into a solid plastic. Without color pellets it is semi translucent and can transmit light. It can be melted back down and reused. It's pretty easy to pop back in with tongs if you keep your water hot while working.

The colors are vibrant and plastic is easy to shape. It's very flexible if you mold it into something thin, so it won't break. The pellets will start to stick as their temperature increases. It's pliable when hot and firm when cooled.

• Colors are easy to make using the chart
• Kind of fun, like a grade-school science experiment that protects your stuff
• You get 6 ounces of raw plastic plus six small bags of coloring
• A must-have on hand for parents of kids with little plastic toys

Best For So many crafts: Whitemorph polymer Putty

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The whitemorph polymer putty should be able to handle its purpose and duties with ease. This kit contains 100 g ( 3.5 oz ) of whitemorph polymorph plastic in a secure, handy resealable pouch. It can be used with clay, resin, plaster and silicone molds. It will begin to cool and harden very fast. It is used for crafting, molding, casting, to repair, quick fixes, sculpting, modeling, diy and customization among many others.

It is very solid. It works really well and is quite easy to use.

• Works great and is so fun to experiment with
• Turns into a putty-like consistency so you can shape it to whatever you want
• Amazing & plenty for a long time

Best For broken Plastic stuff: cloudvalley Heat Moldable Plastic

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We would, of course, be remiss if we didn't mention cloudvalley heat moldable plastic for regular usage. This is really easy to use once you get the hang of it. It is great for all types of art, hobbies, prototypes, props, modeling, etc. It is much easier than Sugru and dried better, making for a more solid repair. This is mainly for making very small holders for like pens or keys or making small fixes to objects that are not around any heat.

This stuff sticks to surfaces at times, does not get hot enough to pour without cooling unevenly, is a very small quantity, will cool too quickly and is very hot to handle with your hands if it overheats. The plastic is only moldable at high temperatures, so it should work fine for the fish tank.

• Holds up well if molded not too thin
• Delivers what they promise

Best For temporary retainer: Instamorph Heat Moldable Plastic

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate plastic. The instamorph heat moldable plastic is exactly that - it's a simple plastic that hits all the right notes. There is no way to take the tomato stain out of the first aborted efforts. They don't have to apply for jobs, talk to girls, communicate with virtually anyone without coming off as being a drug user or poor af. It's incredibly stiff and strong for it's weight, and the complexity of shapes you can make is amazing if you have the patience and a few techniques.

This product is so much fun to use. It can be remolded again and again simply by reheating it. It works fine, no more high dentist bills, when you can make your own tooth that lasts. It's fun to make any shape you want and it's easy to use.

• Easy to use and fast drying
• Fun to melt and remold again
• Made everything look really sleek and professional

Best molding Plastic: Materialix Heat Moldable Plastic

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The materialix heat moldable plastic should be able to handle its purpose and duties with ease. It can be a mug, a bowl, etc.. It is a nylon-like plastic that becomes moldable in 140°f and can be shaped by hand. It goes clear when heated and while it's malleable, then cools down to the same white colour as the beads. It can withstand a force of 8400 lb per square inch. It is easy to reheat if needed to. It lets you create things and make repairs that otherwise you just couldn't do. It is easy to use and a little goes a long way.

You can mold it with your fingers, and you have a few minutes working time from when it melts, yet it is just cool enough not to burn your fingers when working with it.

• Versatile for all kinds of projects
• One of the new comers and featured product

Best For Repairs: Whitemorph Heat Moldable Plastic

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If you often find yourself scrambling for appropriate and satisfactory plastic, whitemorph heat moldable plastic is your end point. This clean, waterproof bioplastic is ideal for repairs, crafts, modelling, sculpting, molds, cosplay, modeling and diy. It can be used with clay, resin, plaster and silicone molds. It is used for crafting, molding, casting, repair, quick fixes, sculpting, modeling, diy and customization among many others.

This kit contains 1kg (2.2lb) of whitemorph polymorph plastic in a secure, handy resealable pouch. The material should be soft, flexible and easy to shape. The pellets will turn transparent when soft enough to mold with many others.

• Hardens in minutes and becomes super strong once set
• Thinner shapes will fully melt faster
• Hardens to a solid plastic in minutes
• Sticks well to itself and most other plastics without the need for glue