Author Topic: making mouldable plastic  (Read 3244 times)

0 Members and 1 Guest are viewing this topic.

Offline paulstreatsTopic starter

  • Supreme Robot
  • *****
  • Posts: 1,381
  • Helpful? 21
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

  • Supreme Robot
  • *****
  • Posts: 1,261
  • Helpful? 5
Re: making mouldable plastic
« Reply #1 on: November 03, 2007, 10:28:11 AM »
Thanks paul! This is going to come in handy =)
United States Marine Corps
Infantry
Returns to society: 2014JAN11

Offline paulstreatsTopic starter

  • Supreme Robot
  • *****
  • Posts: 1,381
  • Helpful? 21
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

  • Administrator
  • Supreme Robot
  • *****
  • Posts: 11,657
  • Helpful? 169
    • Society of Robots
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

  • Full Member
  • ***
  • Posts: 91
  • Helpful? 3
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...



Offline paulstreatsTopic starter

  • Supreme Robot
  • *****
  • Posts: 1,381
  • Helpful? 21
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

  • Supreme Robot
  • *****
  • Posts: 405
  • Helpful? 2
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

  • Robot Overlord
  • ****
  • Posts: 293
  • Helpful? 0
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.
A.I.(yes those are my initials)

Offline paulstreatsTopic starter

  • Supreme Robot
  • *****
  • Posts: 1,381
  • Helpful? 21
Re: making mouldable plastic
« Reply #8 on: November 09, 2007, 05:38:59 AM »

 


Get Your Ad Here

data_list