RoboSavvy Forum

Prototyping Material

2007-05-10T17:31:25+01:00

When they say "Hot melt glue" this is for a laymans comparison. The molecule chains in this stuff are massive and the result is a very hard and durable prototype. The main problem is operating temprature.
Due to the low transition temp from one solid to another and the fact that this is not a permanant state, restricts the use somewhat.

I found this stuff great too work with and had fast results. It feels like a cross between wax and rubber in its active state, and can be made into sheets, rods and balls with ease.

When it sets it is suprisingly strong and resilient. I had trouble cutting it with my sharpest knife and had to re-dope it in hot water to cut it at all.
It has great elastic properties and as such is not brittle.

In its set state it is very similar to a top quality plastic chopping board, y'know the £30 ones that are various colours for various uses. I have not tried to colour or paint it yet but I will post any new info as and when.

Marcus.

Plz bear in mind that I do quite alot of mould making and I use a range of materials for casts. I am happy to play with this polymorh and I think I will find some good uses for it.

Statistics: Posted by DirtyRoboto — Thu May 10, 2007 5:31 pm

Re: Prototyping Material

2007-05-10T16:21:05+01:00

Pev wrote:
tempusmaster wrote:
DirtyRoboto wrote:I just got a bucket of Polymorph to try making some custom parts http://www.mutr.co.uk/catalog/images/LIT0048.pdf
It is heated in water and then molded into shape an cures into a very tough nylon type of material.

I currently use resin and am interested too see how this compares.

Marcus.

Neat stuff!

I'm wondering how it compares to standard hot melt glue, or if the chemical composition is the same but they are forming it at different temperatures. If the characteristics and thermal behavoir are the same, then the color choices and availabilty of hot melt would definitely be worth experimenting with.

I have used the polymorphic resin and it is quite different to the hot melt glue. It has a more nylonee type feel to it (hope that makes sense) and is less brittle. I've only found it in white at present (goes clear when you heat it up in water)

Pev

The PDF data says that it is hot melt glue, though they probably mean that it can be used the same way as hot melt glue.

Statistics: Posted by tempusmaster — Thu May 10, 2007 4:21 pm

Re: Prototyping Material

2007-05-10T15:53:50+01:00

tempusmaster wrote:
DirtyRoboto wrote:I just got a bucket of Polymorph to try making some custom parts http://www.mutr.co.uk/catalog/images/LIT0048.pdf
It is heated in water and then molded into shape an cures into a very tough nylon type of material.

I currently use resin and am interested too see how this compares.

Marcus.

Neat stuff!

I'm wondering how it compares to standard hot melt glue, or if the chemical composition is the same but they are forming it at different temperatures. If the characteristics and thermal behavoir are the same, then the color choices and availabilty of hot melt would definitely be worth experimenting with.

I have used the polymorphic resin and it is quite different to the hot melt glue. It has a more nylonee type feel to it (hope that makes sense) and is less brittle. I've only found it in white at present (goes clear when you heat it up in water)

Pev

Statistics: Posted by Pev — Thu May 10, 2007 3:53 pm

Re: Prototyping Material

2007-05-10T07:26:56+01:00

DirtyRoboto wrote:
I just got a bucket of Polymorph to try making some custom parts http://www.mutr.co.uk/catalog/images/LIT0048.pdf
It is heated in water and then molded into shape an cures into a very tough nylon type of material.

I currently use resin and am interested too see how this compares.

Marcus.

Neat stuff!

I'm wondering how it compares to standard hot melt glue, or if the chemical composition is the same but they are forming it at different temperatures. If the characteristics and thermal behavoir are the same, then the color choices and availabilty of hot melt would definitely be worth experimenting with.

Statistics: Posted by tempusmaster — Thu May 10, 2007 7:26 am

Prototyping Material

2007-05-10T04:56:23+01:00

How about molding some little hands with finger joints... and a slightly larger head that looks more like Asimo or the Sony humanoid head... with jointed lips and facial expressions... and toes...

humanoido

Statistics: Posted by Humanoido — Thu May 10, 2007 4:56 am

Re: Prototyping Material

2007-05-09T18:13:59+01:00

DirtyRoboto wrote:
I just got a bucket of Polymorph to try making some custom parts http://www.mutr.co.uk/catalog/images/LIT0048.pdf
It is heated in water and then molded into shape an cures into a very tough nylon type of material.

I currently use resin and am interested too see how this compares.

Marcus.

I often thought that some kind of skin would be cool for these robots, but then, that's defeating the object of how amazing metal is in these situations

I think the RN comes polished as default, and metal parts are the way to go. One project I might go with eventually - is getting a small custom human like head fitted.

Statistics: Posted by Modereso — Wed May 09, 2007 6:13 pm

Prototyping Material

2007-05-09T17:39:15+01:00

I just got a bucket of Polymorph to try making some custom parts http://www.mutr.co.uk/catalog/images/LIT0048.pdf
It is heated in water and then molded into shape an cures into a very tough nylon type of material.

I currently use resin and am interested too see how this compares.

Marcus.

Statistics: Posted by DirtyRoboto — Wed May 09, 2007 5:39 pm