Devilish Wench
Ambitious Upstart
Semper in excreta sumus solum profundum variat" - 'Always in the shit, but the depth varies'.
Posts: 8
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Post by Devilish Wench on Feb 2, 2005 3:55:09 GMT 12
If anyone has got any suggestions for casting materials that I can put into molds that is reasonably hard/strong and lightweight let me know. Something along the lines of a cheap resin (does such a thin exist?) or at this stage even an experimental putty that will air dry hard or any other experimental material that fits the description above.
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Post by PitYak Studios on Feb 2, 2005 7:00:08 GMT 12
If there's such a thing as cheap resin, i haven't found it yet.
Depending on what you are trying to mould you might want to try plaster (my local shop has the regular stuff, some which dries like resin and some which dries like concrete) or polymer clays, green stuff or milliput.
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Pirate Wench
Scalpel supremo
my favourite finger paint is strawberry flavour
Posts: 353
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Post by Pirate Wench on Feb 2, 2005 9:41:49 GMT 12
not sure how cheap this is... and you probably have to source from overseas. But I found this www.polymerclayexpress.com/molds5.htmlit can be used in the oven so you can use liquid polymer clay, pour it in and bake it , they also mentioned glue gun, if you were using a fairly flat mold you could try glue gun, but i think you'd need to make sure to use a release agent before you tried that one. Looking around at the different crafts and hobbies out there can sometimes bring to light materials or techniques that can be adapted easily to this. I'm always on the browse for ideas, and techniques and I dabble in way too many different crafts anyway these guys are a NZ comany and they sell polymer clays www.zigzag.co.nz/ |
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Post by PitYak Studios on Feb 2, 2005 10:45:17 GMT 12
hmm, yes. Glue? designed to stick to things? strange idea for a casting material....
having said that, i've cast using all kinds of things, and if you have a suitable release agent it's not too bad.
When you make a silicon mold, you can pour half the mold, and if you run out, you can let it set completely, then mix some more and pour that in. you will have a solid block of rubber that will never come apart.
but if you put a layer of release in between, it'll not stick.
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Pirate Wench
Scalpel supremo
my favourite finger paint is strawberry flavour
Posts: 353
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Post by Pirate Wench on Feb 2, 2005 11:41:08 GMT 12
those glue gun sticks aren't actually glue as we know it, they're plastic, the gun melts it, it gets sticky as plastic does then it solidifies again. Potentially you must be able to actually melt them down in a container, I have no idea at what temperature it melts, and pour it into a mold. I wonder how running it gets? I was thinking perhaps if you had a heat resistant mold you could fill it with a pile of gluegun offcuts and put it in the oven, they'd melt down and fill the mold.
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Post by PitYak Studios on Feb 2, 2005 12:23:22 GMT 12
that would probably do it, particularly if you could get a pile of small shavings.
It never really gets fluid in the gun, but small enough pieces may do the trick.
Speaking of glue has got me thinking; epoxy resin (araldite et al) may be worth investigating.
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Post by PitYak Studios on Feb 2, 2005 12:24:38 GMT 12
Then of course there's always the different breeds of wax.
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Pirate Wench
Scalpel supremo
my favourite finger paint is strawberry flavour
Posts: 353
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Post by Pirate Wench on Feb 2, 2005 13:21:55 GMT 12
yeah, there's sealing wax whish is not really a wax but a type of plastic (well the modern stuff anyway) that is designed to take a clear impression. But then again it's probably pretty expensive
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Post by PitYak Studios on Feb 2, 2005 13:45:11 GMT 12
You can find all kinds of that sort of stuff at craft shops, but like you say, you get a little wee piece, and it's cheaper to buy the real deal.
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Devilish Wench
Ambitious Upstart
Semper in excreta sumus solum profundum variat" - 'Always in the shit, but the depth varies'.
Posts: 8
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Post by Devilish Wench on Feb 2, 2005 22:09:04 GMT 12
I know the glue you are talkig about and it has me thinking. I might have to look more into it when I go past the hardware store next. It has kinda made me think how suitable various other tubed materials... I wonder how well solidified no more nails will part from a silicone mold with oil or vaselene as a release agent... prob not the best I imagine and I'd end up screwing up my mold but hey I am open to experiementation...
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Post by PitYak Studios on Feb 2, 2005 22:22:31 GMT 12
...that's what we're all about here.
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