Author Topic: making mouldable plastic  (Read 4844 times)

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paulstreats

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making mouldable plastic
« on: November 03, 2007, 09:32:42 AM »
check this link
http://www.instructables.com/id/How-to-%22make%22-plastic/
it basically shows how to melt syrofoam with paint thinners, you can then mould the plastic like playdough and then leave to harden.

it might be useful to someone...


Offline HDL_CinC_Dragon

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Re: making mouldable plastic
« Reply #1 on: November 03, 2007, 10:28:11 AM »
Thanks paul! This is going to come in handy =)
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paulstreats

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Re: making mouldable plastic
« Reply #2 on: November 03, 2007, 12:13:10 PM »
ive got some in an old coffee jar right now, im just going to mould into a basic shape and leave it to set.

i'll report back on the results

Offline Admin

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Re: making mouldable plastic
« Reply #3 on: November 03, 2007, 06:02:24 PM »
Im curious about its flexibility and hardness after its done.

Offline nottoooily

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Re: making mouldable plastic
« Reply #4 on: November 03, 2007, 11:31:15 PM »
That sounds handy.

You can also mold small thermoplastic parts with a homemade injection molder. I made one using the clylinder and piston from a car shock absorber, an electric drill and threaded rod to inject it, and a hot-air paint stripper to melt the contents. The same device can also be used for doing extrusions, but that's even easier because you don't need to clamp a mold closed.

You can also use silicone rubber molds to duplicate other parts, but I didn't develop this idea very far and only got some distorted parts out of it.

For some shapes it's also possible to just leave some plastic sitting in a mold in the oven for a little while.


check this link
http://www.instructables.com/id/How-to-%22make%22-plastic/
it basically shows how to melt syrofoam with paint thinners, you can then mould the plastic like playdough and then leave to harden.

it might be useful to someone...



paulstreats

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Re: making mouldable plastic
« Reply #5 on: November 08, 2007, 07:10:05 PM »
my plastic still hasnt set properly yet >:(

The paint thinners i used said "acetone based paint thinner" on them, i presume that there wasnt enough acetone content to do the job efficiently, im going to have to try again with pure acetone if i can get it. Most products in the uk generally dont say whats in them, or even what quantities. Try going into a hardware shop and asking for a stone cleaning product with hydrochloric acid in it. What you get is confused looks and then the suspicious question"why? what do you want it for?"

Offline Steve Joblin

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Re: making mouldable plastic
« Reply #6 on: November 08, 2007, 07:14:45 PM »
If memory serves correctly, isn't nail polish remover pure acetone?

Offline Tsukubadaisei

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Re: making mouldable plastic
« Reply #7 on: November 08, 2007, 10:11:10 PM »
Thanks for sharing. I have been looking for this kind of information lately.
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paulstreats

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Re: making mouldable plastic
« Reply #8 on: November 09, 2007, 05:38:59 AM »

 


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