request : resin type information

[Marnok]

Hi all,

I'm making some mini spaceships for gaming - making originals, RTV mold, cast, that's working well for me.

For the next stage I think I need a different resin. I'm using Easyflo 60 and, when set, it is still a bit flexible. As you know, some spaceships have pods on struts and I'm worried that the resin might flex too much if I have a thin strut with a heavy pod (think Blakes 7 Liberator).

Is there a resin which sets more rigid, or something I can add to my resin to make it do that? Is this a property on the materials sheet related to the resin, if so which properties should I look for?

 

[kwalsh0000]

The resin I use is from a group called Raku tools, its a fairly stiff polyurthane resin, has a little bit of flex but nothing major.
Have you tried maybe putting a small piece of metal into the strut area when casting to add support?

 

[Finhead]

You would look at the Shore hardness the higher the number the less flex. Rotocast (65D) from smooth on is fairly flexible - 65 Shore . Onyx from smooth on is very rigid once fully cured 80 shore.

 

[Marnok]

Thanks for the replies, I'll check out that resin and look at the Shore strengths generally for my next order.

 

[Mostly Fantasy]

I'd add a wire to the support/legs. Even a rigid urethane, say, an 85D, can slowly warp over time. If you can insert mold a wire, you wouldn't have any worries down the line.

 

[Marnok]

I'll look into the wire, thanks. Might be possible to make a mold with the wire running through multiple parts, which sounds easy, but then things often sound easy until I actually do them.