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'[EE]:: Friendly plastic aka Polycaproactone aka Po'
2008\02\27@012435 by Josh Koffman

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On Tue, Feb 26, 2008 at 5:01 PM, Apptech <spam_OUTapptechTakeThisOuTspamparadise.net.nz> wrote:
> A most useful material. If you got this from me by BCC then
>  you want to look at the usage guide if you don't know about
>  it already.
>
>  ______________________
>
>
>  A low melting temperature plastic worth knowing about for
>  engineering playing.
>  Can be softened with hot water then moulded to harden back
>  into a reasonably robust plastic.
>  May not be dishwasher safe ;-).
>
>  Sold in pellet form by various suppliers. (Jaycar in NZ).
>
>  Can be used to take some very evil shortcuts. Will tempt you
>  to new heights of lashuppery.
>  The usage guide is an eye opener.
>  Wiki page interesting but less useful.

Another source...with a twist:
http://www.leevalley.com/garden/page.aspx?c=1&p=50390&cat=2,50560

I've seen it at the Dayton Hamvention too. I would guess a craft
supply store would have it or something similar. I like Lee Valley's
sheets though.

Josh
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

2008\02\27@015926 by Apptech

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face
> Another source...with a twist:
> http://www.leevalley.com/garden/page.aspx?c=1&p=50390&cat=2,50560

Hmm - that looks more than 100 ml.
Just goes to show how useful it is for improvising things.
I wonder how they stop the sides sticking together when
flat. I guess you need the water hot but not too too hot.
I wonder how many ksi the plastic is when set.

___________


"Tea or Coffee, Sir?"
'I'll just have a very large cup of boiling water, please
Miss. In fact, make that several.'
...
"Did you see that - I gave him 3 cups of really hot water,
like he asked for, and he jumped up, yelled something about
'all ack kbar' and rushed off into the toilet with them"
"Did he have a K-Bar".
"No. Of course not! No knives allowed. And besides, he'd
never have got anything that big through boarding
inspection".
"Maybe he was feeling airsick, or something?"
...


       Russell





2008\02\27@042435 by Alan B. Pearce

face picon face
>>  Can be used to take some very evil shortcuts. Will tempt you
>>  to new heights of lashuppery.
>>  The usage guide is an eye opener.
>>  Wiki page interesting but less useful.
>
>Another source...with a twist:
> http://www.leevalley.com/garden/page.aspx?c=1&p=50390&cat=2,50560

Sounds almost like the plastic used in soft drink or milk bottles. Most of
those will go reasonably soft if filled with hot water.

2008\02\27@051445 by Apptech

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>>Another source...with a twist:
>> http://www.leevalley.com/garden/page.aspx?c=1&p=50390&cat=2,50560
>
> Sounds almost like the plastic used in soft drink or milk
> bottles. Most of
> those will go reasonably soft if filled with hot water.

Quite different, alas.
While such plastics do go soft they are far less able to be
handled well at these temperatures. They MAY be able to be
processed in a similar way at closer to 200 C.

PET (Polyethyleneterephthalate) (used in softdrink bottles)
is a very nice engineering plastic.
Also hides under the name (surprise!) Dacron.
Also POSSIBLY Arnite, Hostaphan, Impet, Melinar, Melinex,
Rynite, Terylene, Trevira according to

       http://www.goodfellow.com/csp/active/STATIC/E/Polyethylene_terephthalate.HTML


BUT as they also say it is called Mylar, which it isn't, and
fail to distinguish it from Polyester (which it is related
to), the page is suspect.

Wikipedia has copied their error

       http://en.wikipedia.org/wiki/Polyethylene_terephthalate

Dupont, needless to say, don't make the same mistake

       Russell





2008\02\28@122931 by Marc Nicholas

picon face
shapelock.com

-marc

On Thu, Feb 28, 2008 at 11:53 AM, Cedric Chang <.....ccKILLspamspam@spam@nope9.com> wrote:
{Quote hidden}

>  > {Original Message removed}


'[EE]:: Friendly plastic aka Polycaproactone aka Po'
2008\03\17@132003 by Howard Winter
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Russell,

(Continuing my habit of saying the right thing when the right time to say it has long passed...)

On Wed, 27 Feb 2008 23:10:09 +1300, Apptech wrote:

{Quote hidden}

And isn't Melinex a brand name of Melamine (used for "unbreakable" crockery)?  Which if I remember rightly is a thermosetting plastic, not a thermoplastic one?

Cheers,


Howard Winter
St.Albans, England


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