| pdan |
This is Cyclops. My first loudspeaker project.
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| Hartono |
Hi Pdan,
"This is Cyclops. My first loudspeaker project."
your first one ??? that's nice one there, what is the material used ?
Hartono |
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| Cal Weldon |
| That is really something. Tell us how it was made please. |
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| pdan |
Hartono,
I made cyclops during my foundation year at art college and was able to make full use of the sculture studio and materials. The stuff I ended up using was concoction of plaster of paris and "sculptamold" mixed in dilute PVA.
"Sculptamold" is simular to papier-mache only much easier to use,it dries in about 30mins. Plaster of paris by its self would have made cyclops far too heavy and brittle.As it is, I can lift and carry cyclops.The concoction turned out to be very stronge and has so far showed no signs of deteriation.
"Scultamold" really is a very versatile product which I think loudspeaker builders could make great use of.
Cilla |
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| Hartono |
"Sculptamold"
thank for the information, nice "sculpture" I bet it sounds good.
it looks good......
Hartono |
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| Cal Weldon |
So you mold it all by hand?
How do you secure the baffle? |
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| pdan |
Cal,
Yes. The material was applied by my own fair hands over a mould that I had to make first.
The baffle is in 2 sections: 5ml ply and 15ml cork. The ply was first stuck to the chamber using "no nails glue",the cork was stuck down using a rubber based glue; the whole thing was then secured with screws.The cork makes a marvellous surface for the drive unit, its giving nature creates an air tight seal and has great damping properties.
Hartono,
Thanks for the compliment. :)
Cilla |
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| BWRX |
Did you only have time to make one horn or is there a pair? :mischiev:
Looks really cool! |
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| Cal Weldon |
| That's excellent. How did you make the mould Cilla? |
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| pdan |
Brian,
Just the one.......I'm a monomaniac.
I subscribe to the "Humpty Dumpty" philosophy:
"If what was once whole is fragmented then no amount of ingenuity will recreate the original wholeness".
:)
Cilla |
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| pdan |
Cal,
Making the mould was the hardest bit of the project.
First off, I made a skeleton of the horn out of wire meshing. This consisted of many cone like pieces nestled together to produce the required profile and expansion rate, when I was satisfied it was fine, I wrapped the whole thing up in strips of paper that were well soaked in dilute PVA.Then.....when the paper had fully dried and became hard, I decided on using papier-mache to create the final form and structural integrity.The advantage of papier-mache (at least in this case) is that it shrinks,so it would create a nice tight skin. Unfortunately,papier-mache can only be worked wet into wet.The thing would have been too unwieldy to cover in one go, so I cut it into sections.
The sections took days to dry out, but I was very pleased with how they turned out.
:)
Finally it was then a simple matter of rejoining them; then.....BINGO! a mould.
Cilla |
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| Cal Weldon |
| Ok I get it. You didn't make a mould, you formed it on a framework. I thought that must be the way it was done. Good work again. Labour of love. :) |
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| pdan |
Cal,
Actually I did produce a mould. There are two types: "Positive" and "Negative".
A cast made from either,will produce its "opposite". I think you'll find I made a
"Positive" mould.
Believe me, we in England know a great deal about mould.
Cilla |
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| binarywhisper |
| thats pretty cool. |
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| Moondog55 |
Hi Cilla
just been directed to this thread, I'm a total novice to sculpture but I am interested in casting speaker enclosures using similar product.
Could you please help a novice in how to make the mould and then the unmoulding process??
I like "Cyclops" but I'm thinking of something a little less ambitious
Kind regards
Ted |
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| kristleifur |
| quote: | Originally posted by pdan
Believe me, we in England know a great deal about mould. |
Heh!
Lovely speaker. |
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