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Post by Frances on Sept 22, 2014 20:10:09 GMT
would the GAC 400 hold up outside on the birdhouse pod?
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Post by lyn on Sept 22, 2014 20:46:59 GMT
So now some questions, what is cmc paste? di you apply it to the fabric and then shape or shape and then apply? Would it stick peices together? Thinking you could different shaping and then over lap them slightly. CMC paste is basically wall paper paste - here's a WIKI explanationThe 3 scapes above were felted flat and cmc paste was added when the felt was still wet from working it. Then the piece was formed as required and left to dry for a few days in a warm place. The waves (in the first photo) needed support while it dried (I filled an extra large dog crate liner with polystyrene beads then covered it with thin plastic so that I could lay the sticky felt on it, shape it and leave it to dry on its custom-made mould). The other two were very fine and didn't need support. They all dried as hard as board! Do you remember this? I made a flat, circular piece of cobweb felt, then when it was still wet, I applied cmc paste then dried it over a fluted glass dish. Thinking back, I reckon it would have been possible to stick extra bits on to it - just never tried it.
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Post by Shepherdess on Sept 22, 2014 22:15:26 GMT
Now I know it chemical shape I am all set LOL
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Post by lyn on Sept 22, 2014 22:57:40 GMT
I just knew that diagram would help a lot Ann!
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Deleted
Deleted Member
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Post by Deleted on Sept 22, 2014 23:57:45 GMT
Hello Lyn, your cobweb bowl is truly lovely.
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Post by luvswool and dyestuff on Sept 23, 2014 12:12:34 GMT
I do remember seeing that bowl, quite lovely! Reading about the wallpaper paste brought back memories of making a paper mache giraffe at a craft center when I was 6 years old. Ooey, gooey, but dries hard as a rock!
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Shana
Full Member
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Post by Shana on Sept 23, 2014 15:10:00 GMT
would the GAC 400 hold up outside on the birdhouse pod? Honestly, I don't know. Might be worth doing a sample piece to find out though.
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Post by Shepherdess on Sept 23, 2014 23:07:27 GMT
You could use cleat paverpol or the generic form of it. It dried hard and is waterproof outside.
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Post by beaubears on Nov 25, 2019 17:36:43 GMT
I finish felting a 3d figure and I don't want to retain its cloth type because dirt, moist and other elements I want to protect it and I want to make it hard or stiff Hi rzo, I stiffen my sculptures all the time for protection during shipping, as well as maintaining complex shapes and structures. I use a hardener made by Golden Paints called "GAC 400" made specifically for hardening textiles & fabrics. Jacquard also makes a product called "Fabric Sculpting Medium" which is fairly dense. Both products can be thinned out to achieve your desired texture, stiffness and sheen. Normally, I thin out the GAC 400 to about a 50/50 ratio with water so the object will retain a soft appearance but will actually be rock hard when dried. Even a 75/25 (GAC/water) ratio will give a plastic-y sheen, something I try to avoid. You can mix acrylic paints in with either of these products.. though I would do several samples before applying to the final object. In the photo below, the back sample was dipped in encaustic wax, the front sample was a white wool piece painted with acrylic and stiffener mix. View AttachmentHope that helps. ~Shana
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Post by beaubears on Nov 25, 2019 17:37:52 GMT
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Post by beaubears on Nov 25, 2019 17:40:35 GMT
Hi Shana, I have a question about GAC 400. Do you paint or shade the piece before or after applying the hardener?
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Post by beaubears on Nov 25, 2019 17:50:32 GMT
If you use a hardener like GAC 400 or Paverpol do you paint or shade your piece before or after applying the hardener?
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Shana
Full Member
Posts: 108
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Post by Shana on Dec 1, 2019 13:16:22 GMT
Hi Shana, I have a question about GAC 400. Do you paint or shade the piece before or after applying the hardener? Hi Beaubears,
The GAC400 or Paverpol is the very last step. So if you want to add more (color*, attachments, wires, etc.) get all your work done beforehand. The GAC400 goes on like white glue but dries clear.. it can be a little anxiety-provoking the first time you do it.
*All my coloration is done with dyed wool. No paint.
Hope that helps.
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Post by Ann @ frabjous fabrica on Mar 2, 2021 16:46:34 GMT
I've just been browsing and spotted this thread. It sounds to me as if GAC400 is actually PVA Glue, is that right? Ann
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Post by Shepherdess on Mar 3, 2021 0:11:26 GMT
When I google Gack400, it says it is water-borne acrylic. It says it dries very hard and clear but it doesn't say it is waterproof. PVA is Polyvinyl acetate, an aliphatic rubbery synthetic polymer. I know it will become tacky if in a high humidity situation and worse if it gets wet.
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