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| UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
I'm looking for a way to make something made of fabric become rigid.
The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. -- Chris Green · |
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#2
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
In article ,
Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Diluted PVA? Not waterproof, though. Or check what they used on fabric car bodies, etc. -- *A nest isn't empty until all their stuff is out of the attic Dave Plowman London SW To e-mail, change noise into sound. |
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#3
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 10:06, Chris Green wrote:
I'm looking for a way to make something made of fabric become rigid. How rigid and how much flex does it need to support when dry? The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. It isn't the two part that causes trouble it is the heat generated by the curing and the relatively low viscosity at the early stages. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. The latex resin sold for dipping mould making at craft shops might do what you want provided that the fabric is not subject to too much stress and strain. Might be easier to use the right sort of fabric instead. https://www.fredaldous.co.uk/product...rubber-1-litre -- Regards, Martin Brown |
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#4
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 10:06, Chris Green wrote:
I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Does the final product need to be waterproof? PVA (dries transparent) http://www.wilko.com/glue-tape+corrector-fluid/wilko-pva-glue-500ml/invt/0300256 Semi waterproof https://www.toolstation.com/shop/p22271?r=googleshopping&rr=marin&utm_source=google shopping&utm_medium=feed&utm_campaign=googleshoppi ngfeed&mkwid=sZALnCRnp_dc&pcrid=142453205744&pkw=& pmt=&product=22271&gclid=EAIaIQobChMI1Nj5mrP31gIV6 jLTCh3pGA6_EAQYBCABEgJGRfD_BwE Roseal wet rot resin - one part with the consistency of water - solvent based so possibly not suitable with some fabrics. https://www.toolstation.com/shop/p94441?table=no This will dry hard so bending the cloth afterwards will crack it (the same will happen with fibre glass resin and perhaps anything else. -- mailto: news {at} admac {dot] myzen {dot} co {dot} uk |
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#5
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 10:06, Chris Green wrote:
I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Not wishing to be obtuse, but exactly what properties are you after. Nothing is really rigid, even glass bends a bit before it breaks. How strong does it have to be? Like postcard material? Like metal shim? How thick can you make it? Does the final appearance matter? Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". Does anyone still make balsa aeroplanes covered with tissue paper and stiffened with "dope"? Traditional shellac type varnish will be stiff, but brittle. Polyurethane is more flexible, but tougher and stronger. Are you looking at large areas? A clue to the exact application might help! |
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#6
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 11:16, newshound wrote:
Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". I believe that dope covered fabric isn't UV stable. -- mailto: news {at} admac {dot] myzen {dot} co {dot} uk |
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#7
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
On Tue, 17 Oct 2017 10:06:26 +0100, Chris Green wrote:
I'm looking for a way to make something made of fabric become rigid. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Dope , No not you the stuff they used to use on fabric covered aeroplanes. There are a few vintage planes around so perhaps a perusal of that hobby may yield something or NP may know of source via his hobby. G.Harman |
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#8
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
In message , alan_m
writes On 17/10/2017 11:16, newshound wrote: Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". I believe that dope covered fabric isn't UV stable. Whatever happened to banana oil? -- Bill |
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#9
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
Martin Brown wrote:
On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. How rigid and how much flex does it need to support when dry? The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. It isn't the two part that causes trouble it is the heat generated by the curing and the relatively low viscosity at the early stages. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. The latex resin sold for dipping mould making at craft shops might do what you want provided that the fabric is not subject to too much stress and strain. Might be easier to use the right sort of fabric instead. https://www.fredaldous.co.uk/product...rubber-1-litre Yes, though it might not be stiff enough. I've toyed with trying that for some other ideas so it would be worth a go anyway. -- Chris Green · |
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#10
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On Tuesday, 17 October 2017 11:16:11 UTC+1, newshound wrote:
On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Not wishing to be obtuse, but exactly what properties are you after. Nothing is really rigid, even glass bends a bit before it breaks. How strong does it have to be? Like postcard material? Like metal shim? How thick can you make it? Does the final appearance matter? Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". Does anyone still make balsa aeroplanes covered with tissue paper and stiffened with "dope"? Traditional shellac type varnish will be stiff, but brittle. Polyurethane is more flexible, but tougher and stronger. Are you looking at large areas? A clue to the exact application might help! Quite. Household alkyd gloss paint waterproofs, but doesn't add much strength. Dope shrinks the cloth, which makes it seem rigid if on a frame. Non-shrinking dope aka banana oil doesn't. NT |
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#11
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
alan_m wrote:
On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Does the final product need to be waterproof? Yes PVA (dries transparent) http://www.wilko.com/glue-tape+corrector-fluid/wilko-pva-glue-500ml/invt/0300256 Presumably that's *not* waterproof. Semi waterproof https://www.toolstation.com/shop/p22271?r=googleshopping&rr=marin&utm_source=google shopping&utm_medium=feed&utm_campaign=googleshoppi ngfeed&mkwid=sZALnCRnp_dc&pcrid=142453205744&pkw=& pmt=&product=22271&gclid=EAIaIQobChMI1Nj5mrP31gIV6 jLTCh3pGA6_EAQYBCABEgJGRfD_BwE That would probably do, it's not going to be in water. Roseal wet rot resin - one part with the consistency of water - solvent based so possibly not suitable with some fabrics. https://www.toolstation.com/shop/p94441?table=no This will dry hard so bending the cloth afterwards will crack it (the same will happen with fibre glass resin and perhaps anything else. I want it to dry hard. -- Chris Green · |
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#12
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
alan_m wrote:
On 17/10/2017 11:16, newshound wrote: Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". I believe that dope covered fabric isn't UV stable. No problem, this isn't going to be exposed to sunlight, at least not for any significant amount of time. -- Chris Green · |
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#13
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/17 10:06, Chris Green wrote:
I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Well the $64000 question is 'how stiff do you want it?' as the actress said to the bishop, stirring her tea with the other hand... Aircraft dope works to shrink but its not that stiff. Same for any other vbarnishes. If you actually THOUGHT about the problem you would realised that what gives stiffness is a relativiely inelastic material and some depth to it. fibregflass is not glass cloth with a coat of resin, its a thick layer of resin given tensile strength by glass fibres Stiff means thick, and thick means expensive. Yoiu coiuld gor example glue foam boiard to te cloth to make it stoiff. I think you probably need to explain what you want to achieve, because thsi sounds like one of these 'if I wanted to go there, I wouldnt start from here' situations. -- "I am inclined to tell the truth and dislike people who lie consistently. This makes me unfit for the company of people of a Left persuasion, and all women" |
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#14
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/17 11:09, Martin Brown wrote:
On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. How rigid and how much flex does it need to support when dry? The obvious readily available stuff for doing this would be the resin used for fibreglass.* I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. It isn't the two part that causes trouble it is the heat generated by the curing and the relatively low viscosity at the early stages. So, can anyone recommend an alternative?* A 'one part' liquid that just needs to dry would be ideal, brush or spray application.* It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin.* I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. The latex resin sold for dipping mould making at craft shops might do what you want provided that the fabric is not subject to too much stress and strain. Might be easier to use the right sort of fabric instead. https://www.fredaldous.co.uk/product...rubber-1-litre Plaster of paris would be far stiffer -- To ban Christmas, simply give turkeys the vote. |
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#15
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/17 11:16, newshound wrote:
Does anyone still make balsa aeroplanes covered with tissue paper and stiffened with "dope"? Shrunk and airproofed with dope yes. -- Of what good are dead warriors? Warriors are those who desire battle more than peace. Those who seek battle despite peace. Those who thump their spears on the ground and talk of honor. Those who leap high the battle dance and dream of glory The good of dead warriors, Mother, is that they are dead. Sheri S Tepper: The Awakeners. |
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#16
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/17 11:33, alan_m wrote:
On 17/10/2017 11:16, newshound wrote: Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". I believe that dope covered fabric isn't UV stable. Aircaft lifetimes are not that long either in war...I beleive the average life expectancy of a spitfire was 6 weeks, representing perhaps 160 hours in the air. Not even long enough to need a plug change -- Of what good are dead warriors? Warriors are those who desire battle more than peace. Those who seek battle despite peace. Those who thump their spears on the ground and talk of honor. Those who leap high the battle dance and dream of glory The good of dead warriors, Mother, is that they are dead. Sheri S Tepper: The Awakeners. |
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#17
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
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#18
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/17 12:02, Bill wrote:
In message , alan_m writes On 17/10/2017 11:16, newshound wrote: Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth* and stiffened with "dope". I believe that dope covered fabric isn't UV stable. Whatever happened to banana oil? Can still be got, but very few people use it -- "Corbyn talks about equality, justice, opportunity, health care, peace, community, compassion, investment, security, housing...." "What kind of person is not interested in those things?" "Jeremy Corbyn?" |
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#19
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 12:45, The Natural Philosopher wrote:
On 17/10/17 11:09, Martin Brown wrote: On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. How rigid and how much flex does it need to support when dry? The latex resin sold for dipping mould making at craft shops might do what you want provided that the fabric is not subject to too much stress and strain. Might be easier to use the right sort of fabric instead. https://www.fredaldous.co.uk/product...rubber-1-litre Plaster of paris would be far stiffer But not very waterproof. If he said what he wanted it to use it for it would be a lot easier to suggest a sensible choice of material(s). If I wanted something really strong and tough I would probably use a two part epoxy paint and several layers with glass fibre mat in between. For a small job a couple of tubes of long working time standard epoxy. It is OK so long as it is a thin coat when it is curing. Bulk it gets mad hot. -- Regards, Martin Brown |
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#20
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 12:48, The Natural Philosopher wrote:
On 17/10/17 11:33, alan_m wrote: On 17/10/2017 11:16, newshound wrote: Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". I believe that dope covered fabric isn't UV stable. Aircaft lifetimes* are not that long either in war...I beleive the average life expectancy of a spitfire was 6 weeks,* representing perhaps 160 hours in the air. Not even long enough to need a plug change WW1 pilots life expectancy around two weeks. As they didn't carry parachutes every life lost was an aircraft lost. Spitfire metal skinned - Hurricane fabric skinned -- mailto: news {at} admac {dot] myzen {dot} co {dot} uk |
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#21
Posted to uk.d-i-y
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/17 13:04, Martin Brown wrote:
On 17/10/2017 12:45, The Natural Philosopher wrote: On 17/10/17 11:09, Martin Brown wrote: On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. How rigid and how much flex does it need to support when dry? The latex resin sold for dipping mould making at craft shops might do what you want provided that the fabric is not subject to too much stress and strain. Might be easier to use the right sort of fabric instead. https://www.fredaldous.co.uk/product...rubber-1-litre Plaster of paris would be far stiffer But not very waterproof. If he said what he wanted it to use it for it would be a lot easier to suggest a sensible choice of material(s). If I wanted something really strong and tough I would probably use a two part epoxy paint and several layers with glass fibre mat in between. For a small job a couple of tubes of long working time standard epoxy. It is OK so long as it is a thin coat when it is curing. Bulk it gets mad hot. Id buy 5 litres of poroper polyester resin and hardener. Bloody site cheaper than poxy. -- But what a weak barrier is truth when it stands in the way of an hypothesis! Mary Wollstonecraft |
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#22
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
In article ,
alan_m wrote: Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". I believe that dope covered fabric isn't UV stable. They made car bodies out of it for long enough. -- *I don't feel old. I don't feel anything until noon. Then it's time for my nap. Dave Plowman London SW To e-mail, change noise into sound. |
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#23
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On Tuesday, 17 October 2017 12:33:05 UTC+1, Chris Green wrote:
alan_m wrote: On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Does the final product need to be waterproof? Yes PVA (dries transparent) http://www.wilko.com/glue-tape+corrector-fluid/wilko-pva-glue-500ml/invt/0300256 Presumably that's *not* waterproof. Semi waterproof https://www.toolstation.com/shop/p22271?r=googleshopping&rr=marin&utm_source=google shopping&utm_medium=feed&utm_campaign=googleshoppi ngfeed&mkwid=sZALnCRnp_dc&pcrid=142453205744&pkw=& pmt=&product=22271&gclid=EAIaIQobChMI1Nj5mrP31gIV6 jLTCh3pGA6_EAQYBCABEgJGRfD_BwE That would probably do, it's not going to be in water. Roseal wet rot resin - one part with the consistency of water - solvent based so possibly not suitable with some fabrics. https://www.toolstation.com/shop/p94441?table=no This will dry hard so bending the cloth afterwards will crack it (the same will happen with fibre glass resin and perhaps anything else. I want it to dry hard. since you're not willing to tell us what we'd need to know, replies seem pointless |
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#24
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On 17/10/2017 12:44, The Natural Philosopher wrote:
On 17/10/17 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass.* I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative?* A 'one part' liquid that just needs to dry would be ideal, brush or spray application.* It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin.* I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Well the $64000 question is 'how stiff do you want it?' as the actress said to the bishop,* stirring her tea with the other hand... Aircraft dope works to shrink but its not that stiff. Same for any other vbarnishes. If you actually THOUGHT about the problem you would realised that what gives stiffness is a relativiely inelastic material and some depth to it. fibregflass is not glass cloth with a coat of resin, its a thick layer of resin given tensile strength by glass fibres Stiff means thick, and thick means expensive. Yoiu coiuld gor example glue foam boiard to te cloth to make it stoiff. I think you probably need to explain what you want to achieve, because thsi sounds like one of these 'if I wanted to go there, I wouldnt start from here' situations. My point exactly. One of my first thoughts was sugar syrup, as used to make "theatrical" glass for stunt work. |
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#26
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
"newshound" wrote in message o.uk... On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. Not wishing to be obtuse, but exactly what properties are you after. Nothing is really rigid, even glass bends a bit before it breaks. How strong does it have to be? Like postcard material? Like metal shim? How thick can you make it? Does the final appearance matter? Sounds to me like you may be on the right lines with "varnish". After all, even the skins of some WW2 military planes were covered with cloth and stiffened with "dope". Does anyone still make balsa aeroplanes covered with tissue paper and stiffened with "dope"? Yep, mate of mine does. Traditional shellac type varnish will be stiff, but brittle. Polyurethane is more flexible, but tougher and stronger. Are you looking at large areas? A clue to the exact application might help! |
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#27
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Wanted - something like epoxy/fibreglass resin but easier to use,needn't be as strong
On Tuesday, 17 October 2017 19:20:54 UTC+1, Brian Gaff wrote:
"Martin Brown" wrote in message news  On 17/10/2017 10:06, Chris Green wrote: I'm looking for a way to make something made of fabric become rigid. How rigid and how much flex does it need to support when dry? The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need. It isn't the two part that causes trouble it is the heat generated by the curing and the relatively low viscosity at the early stages. So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually *designed* for such a use. The latex resin sold for dipping mould making at craft shops might do what you want provided that the fabric is not subject to too much stress and strain. Might be easier to use the right sort of fabric instead. https://www.fredaldous.co.uk/product...rubber-1-litre When they used to make aircraft from fabric over wood they use some kind of dope but it was quite firm, maybe a bit too firm. Brian wasn't firm at all of course, just pulled tight |
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Wanted - something like epoxy/fibreglass resin but easier to use, needn't be as strong
alan_m writes:
WW1 pilots life expectancy around two weeks. As they didn't carry parachutes every life lost was an aircraft lost. Remembering that von Richthofen landed his plane after being fatally wounded, I was going to say not all, but then Wikipedia says that although his plane was relatively undamaged, souvenir collectors soon took it to bits. So it was lost all the same. -- Jón Fairbairn |
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