How to Use Polymorph Plastic





Introduction: How to Use Polymorph Plastic

About: I like electronics.

I love this stuff. I use it all the time for school projects, USB covers and custom enclosures for my projects. I use Jaycar Electronics as a source for this stuff and it is ~$8 for 500 grams. It can be drilled, painted and re-moulded time and time again. I will show you what i think is the easiest way to make stuff with polymorph. PS i am not assosiated with jaycar in any way.

Step 1: Start

This is the hardest part of all. You can use either a wall or a high-walled metal tray. Tray's work well because they keep the plastic warm while making.

Place ~ 5 pellets against the wall and set a hairdryer to it's lowest speed and highest heat. heat the plastic until it goes clear. I haven't used hot water because this works so well for me.

Step 2: More!!!

You should end up with something like the picture below. a clear glob.

Next, push more pellets into the mass like in the second picture.

Then, heat and repeat!

Step 3: Done!!!




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    40 Discussions

    It depends on the size of the screw. Thin strands of PCL are very flexible (with nice tensile strength, though), but thicker parts and lumps of PCL do not show any apparent flexing. (So for thicker screws or worn down screw heads you could probably make a working screw driver out of PCL).

    I wonder if Polymorph could be used to make molds of tamperproof screws (new iPhone 4 screws).

    i am going to buy some polymorph, quick question, would it be appropriate to use polymorph to build a rc 1/12 2kg tank from?, as well as sheet aluminium for the base and structure of the tank also , does it do gear safts well? when i say that im wondering if it grinds away as i need to use it as a gear box

    how do you keep the polymorph from sticking to everything?! I've made some molds for the polymorph to go into but I ALWAYS have a hard time getting it to release from the mold. Any pointers? Thanks, vkain

    2 replies

    Polymorph bonds more when it is nearly molten (and hotter). I find that a few squirts from a garden variety hand-held mister full of water, such as this (you can pick these up at just about any garden center) or even a rapid dip in some cold water is enough to cool the outside of a piece of polymorph (pre-molding) to stop it sticking, even to other pieces of polymorph.

    I just recently found a site in the US that was selling "Honey Wax" which is a wax used for releasing molds and asl in casting fiber glass shells. If you search for it, you may find a supplier near to you.

    youve got to have a messy floor by now , let alone a messy wall , this stuff sticks to fabric when its hot , ie carpet

    Honey wax is also called Bee's wax..... for you canadians

    this is stupid, I thave no idea waht is going on where does this have to do with bulding a laser projector?

    1 reply

    echo_anomie's reasoning for recommending it was quite clear - as a way to securely hold the lenses. Other methods are possible, as well.

    WARNING! This stuff will become brittle after time. I made a cradle with a 1/4-20 threaded insert in it that strapped on to a binoculars for a tripod mount. After a year or so it became brittle, cracked and literally fell into pieces. This was probably about 15 years ago with the "Friendly Plastic" brand. Maybe they have improved the product by now, but I would be careful using it for permanent uses or anything that would be dangerous if it failed. It's great for ptototypes or jewelry though.

    4 replies

    1. Friendly Plastic IS NOT PolyMorph it is something completely different. 2. Polymorph required 62 degrees Celsius to become workable and Friendly plastic needs 100 degrees Celsius. These are completely different plastics, please will people take note.

    Thanks For the warning. However, The brand I use, Duratech, seems to be virtually invincible. I have made myself a little 'buisness' for my friends making solid spheres about 2cm in diameter out of this. We have competitions to see who can bounce it the highest by pelting it at the floor. That was months ago, and these suckers stand up to dail abuse. So yeah, i'm guessing it's been improved. Thanks though. Nice to see someone actually reads my instructables. :)

    Try it again after a year or two. Or three. (It might have been even longer for mine, come to think of it. That was a long time ago.) How do you make spheres? Are they accurately shaped, or just rolled by hand?

    Yeah, but you said it was for a camera mount. daily use? And is it the same kind of daily abuse? I'll be sure to tell you if it breaks though!!! :) Spheres are a long process. I start by making a molten sheet of polymorph, about 10cm x 10cm, 1 pellet thick. I then gather this and form it into a rough ball. I get a pin and poke it to get the air bubbles out. Then I get a 30x30cm sheet of aluminium. I heat that up to about 50C and start rolling on that. The alloy stays hot for about half an hour, and then the ball slowly hardens. Whole process takes about a hour. The metal sheet ensures that the balls cool from the inside-out, allowing the guts to get strength, while the surface is smoothed. Texture is perfect using this method, and the surface is uniform and smooth. And sometimes I leave out the air-bubble-removal step so it forms bubbles. This means it sometimes bounces in odd directions. All this for my mates in grade 9!!! (only 14 here peeps) I should post an instructable on it.

    I do a little bit of home made injection moulding sometimes I find the best releasing agent is sqwirting some fairy liquid onto my finger and wiping it onto the mould might work for polymorph too (I LOVE polymorph its just so expensive at maplins, ill have to get my next batch online) PS want to make a cradle for my palm pilot I looked at my polymorph but I don't want to make a mould just to make one thing does anybody know a decent way to make a cradle for palm pilot (I want to use my existing cable and charger and build the cradle around them if that makes sense many thanks chris

    Can this stuff be re-melted? If so, then melt a bunch, use a piece of 1/2 pvc as a mold to make sticks of this Poly plastic. then you can use a hot glue gun to heat and pump out your plastic.
    /I must call those fine folks over at cayjar and place a large order at once! Why don't all of us go to their site? >>>Now that would be spamtastic.
    All DuckFudge did is let us know a good source. Not really spam.

    3 replies

    Maplin are expensive, they sell this stuff at about £40 a kilo, that is about 3 times the actual retail price. If you can, your best sourcing another supplier that does better quantities like the one I found that does 4 Kilo tubs for £56 delivered to your door, based on maplins prices, this would be £160...! Sort of says it all, maplins are milking the public, like with most of its products now.

    I didn't say that Maplin were the best supplier, just the most accessible to UK buyers.

    Could you post a link to your cheaper source? I know a technology teacher who wants to use it in lessons.