Pouring a handle.

[whitey180]

As the subject suggests....

Not sure on what would be the best composite to use to fill a split mould with liquid to create a finished handle? Would you guys go with epoxy? + additives? Or perhaps a 2 part polyurethane?


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[kwtony]

Use Polymorph and make a custom handle. You aren't going to get much information on here to try and pour your own glass filled nylon handles...

 

[whitey180]

Oh ok. Thanks.


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[kwtony]

Here are a few examples...


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[lawstraljan16]

An example of what polymorph thermoplastic is capable of. Cheap too.



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[whitey180]

Yeah thanks guys. I've already made one. I was after info about making a mould and pouring a handle. It's all sorted now thanks.


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[lawstraljan16]

What you use?

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[lawstraljan16]

If you want a mould, you can also use polymorph for that. The things that stuff can do is limitless. Just use saran wrap so it doesnt stick.

Good luck

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[kwtony]

im not sure polymorph would be good for his type of application, i would think you need something more fluid. There are plenty of cheap polymers out there that would be better suited for his needs.

Dont get me wrong tho, i think polymorph is literally the best thing since sliced bread..

 

[lawstraljan16]

Lol i wouldnt know ive never had to nould someth8ng. But what do you mean by more fluid?

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[foxfish]

Polymorph is great for making mould but not for filling a mould.

 

[lawstraljan16]

Filling a mold as in using it as a handle? Why not?

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[foxfish]

I am getting confused... the polymorph I have used comes in little round balls that are heated up to become supple enough to mould into a shape but, I cant see how you could get it liquid enough to pour into a mould?

 

[lawstraljan16]

Aaah ok sorry. We are both understanding each other wrong.

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[whitey180]

Did a few tests the other night even with petroleum jelly the epoxy will stick enough to the mould to make it hard to get the part out. I didn't think epoxy was a great choice for a solid part anyways one because it might tend to be too brittle and two because it may be hard to remove from mould.

I'm not sure what other things I could look at. Perhaps a liquid polyurethane.


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[foxfish]

I don't really know what you are trying to achieve?
If you have gone to the trouble of making a split mould for a spear gun handle, how will you attach it to the gun?
There are several mould release agents available, PVA or mirror wax are both popular.
A solid epoxy handle does not sound good to me, I can't get my head around your idea but a centre core of foam & a lightweight mix of fairing powder & epoxy might work.

 

[whitey180]

I've made a custom handle that i want to use on all my guns. There are heaps of ways that I can think of to fix them in. One being dowels inserted at the time if pouring the mould then epoxy into stock. The other similar to the way they fix the abellan handles. Mechanical and then hide the screws either with a tinted epoxy etc.


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[lawstraljan16]

Im gonna be using thernoplastic polymorph.

Ill just make a frame that screws onto the gun, melt the polymorph and form it into the frame and let it dry. Much easier!

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[kwtony]

Run a dowel out f the bottom of the gun and build off of that.dont build and try to attach, it'll be much stronger if you start with a good foundation and work off of that.