Mindsets Polymorph 250g

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Quoting product code: N14AT


About this product


  • 250g of malleable polymorph plastic pellets
  • Create models, joints, moulds, brackets or anything that can be shaped out of plastic
  • Easy to mould and model with, just needs hot water (62 °C and above) Special features

Product overview

• 250g of malleable polymorph plastic pellets
• Create models, joints, moulds, brackets or anything that can be shaped out of plastic
• Easy to mould and model with, just needs hot water (62 °C and above)

Special features
• Can be painted using acrylic paints

What can I do with polymorph?
Polymorph is a great commercial polymer that has many applications and with this 250g container you can create whatever you need. The plastic comes as solid pellets but when submerged in water of 62 degree Celsius or hotter or under a hairdryer at a similar temperature it fuses and becomes malleable. You can then form many shapes from frames and skeletons for models to easier to hold cutlery handles. You can also use polymorph as a mound by using it to take an impression then waiting for it to harden as it cools and use it to reproduce the image. The material is nontoxic and waterproof when cooled and is fully biodegradable.

How does it work?
When hot the polymorph is a flexible, easily to mould plastic which sets as it cools. When cooled it becomes very similar to nylon and is stiffer, stronger and tougher than most domestically used plastics. Polymorph is a thermoplastic material and can be reheated and remoulded as often as is needed. When you have a design you would like to keep the plastic can be painted using acrylic paints.

Rated 5 out of 5 by from Fantastic Plastic! If ever there was an essential tool in the bodger's toolkit, this is it. Drop the pellets into a cup of hot water, leave for a minute, and then mould by hand. I have used it to make handles, adapters between surfaces of different shapes, corner protectors - the list is endless. And if your moulded item is not what you intended, drop it back into the hot water and start again. On top of all this, Polymorph can be machined; I have cut it and drilled it (using a Dremel) and it behaves like any hard plastic. Amazing stuff!
Date published: 2014-11-15
Rated 5 out of 5 by from It may not be obvious, but this stuff is excellent For some time, I was stuck with the shelves in my very expensive Smeg fridge/freezer falling off. I believe the reason to be poor design and materials, as the notches are small, and the door frame shifted outwards, so the notch would not be secured in the shelf. I wish I had found polymorph earlier, as it wouldn't have cracked shelves which cost a fortune to replace (of course, Smeg wouldn't accept any liability for such a poor design, and their replacement items cost a small fortune). Anyway, I was quickly and easily able to mould extensions to the notches, so the shelves are now secure. Have also fixed a filing cabinet by moulding some tabs onto the drawer mechanism (the reason so many filing cabinets do not open properly, as they use cheap plastic tabs which run along the metal runners and wear out). I'm sure there are many, many uses for this stuff, but they are just not obvious. Hope the company does well, as I suspect one day in the distant future (I think this tub will last some time), I would like to buy some more.
Date published: 2016-01-13
Rated 2 out of 5 by from Limited lifespan. In use at room temperature this product degrades to a brittle and considerably less useful state after one melt after one year. I suspect the more times it is reused the more quickly it degrades. "It can be reused any number of times" - I find this to be seriously misleading. Not for long term reliability.
Date published: 2017-10-12
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Product Specifications

Computer System Requirements:


Number Of Included Parts:


Number Of Experiments:


Power Specifications

Power Source:







Chemistry Kit

Recommended Age:



Package Contents:

1x 250g of Mindsets polymorph

I am building a water fountain in a cabin for my lizard and I won't it waterproof does it degrade after time in water or will it last 

Asked by: smokymucpot
This behaves like any hard plastic and would contain water just fine.
Answered by: Dale
Date published: 2017-03-10

Just to clarify my question, I am trying to find what sort of VOLUME the 250g tub represents.

Asked by: Sunray
I'm sorry we do not have this information.
Answered by: Dominic
Date published: 2016-12-20

The tub in the picture with the spoon looks quite small, what sort of volume of Polymorph does it contain?

Asked by: Sunray
There is 250g of Polymorph
Answered by: Dale
Date published: 2018-01-23

Is it opaque or translucent?
Asked by: Stuart McGraw
When Polymorph is rendered paper-thin or melted, it appears transparent. Whereas at a moderate thickness, the hardened plastic becomes mostly an opaque white, with translucent extremities.
Answered by: Poppyburner
Date published: 2016-07-24

Hi, can you dye this product while it is heated and soft? i.e. can you put in a colour so the material is uniform in colour right through? Thanks
Asked by: Julian
I find that for uniformity, a LOT of kneeding's needed. Powder pigment also works. E.g. ground charcoal.
Answered by: Poppyburner
Date published: 2016-07-24

How long does it take to harden?
Asked by: Peter
If it's helpful: I find that putting soft Polymorph in the freezer, significantly speeds the hardening.
Answered by: Poppyburner
Date published: 2016-07-24

once ready for moulding, will polymorph stick to the inside of a glass or plastic container and will it remain leak proof with room temperature liquid in the container

Asked by: caddy
Hardened Polymorph has no adhesive property, but I'm sure it would contain that liquid.
Answered by: Poppyburner
Date published: 2016-07-24

Can this product be painted once set?

Asked by: DJB93
Yes with acrylic based colour paint.
Answered by: Billy
Date published: 2018-01-23
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