Expanding Soft Polyurethane Foam - E60 PUR V-sure

00:10:46
https://www.youtube.com/watch?v=MJw_vQ6oTOs

Summary

TLDRI denne videoen viser Matsui hvordan han bruker myk polyuretan for å lage Ironman-masker. Prosessen innebærer en del improvisasjon og testing med hovedfokus på formlaging. Først koder han pre-formene med en gelcoat, etterfulgt av flere lag med glassfiber og laminatpolyester for å lage en sterk og stabil form. Viktigheten av riktig tykkelse for å unngå deformasjoner er nevnt. Når formen er ferdig, påføres en utløsningsmiddel før volumet fylles med ekspanderende polyuretanskum. For det endelige produktets estetikk, benytter han en in-mold coating for å gi delen en glansfull finish. Videoen fremhever fleksibiliteten og den raske herdetiden i prosessen, samtidig som den nevner at eksakte mengder må merkes for fremtidige referanser.

Takeaways

  • 🎭 Bruk polyuretan for å lage fleksible masker.
  • 🔨 Viktigheten av en solid form for stabilitet.
  • 💡 Bruk improv og testing for beste resultat.
  • ✨ In-mold coating for skinnende finish.
  • ⚠️ For mye polyuretan kan forårsake deformering.
  • 📏 Merking av mengder for presisjon.
  • ⏱️ Polyuretan herder raskt.
  • 🛠️ Flere lag med glassfiber for styrke.
  • 🔧 Det er vanskelig å korrigere feil på polyuretan.
  • 🧪 Kjenn forskjellen på formmateriale.

Timeline

  • 00:00:00 - 00:05:00

    Videoen starter med at Matsui introduserer bruken av myk polyuretan for å lage Iron Man-masker. Prosessen begynner med å lage en form, der det første laget er en gelcoating. Matsui forklarer fordelene med å bruke Uni mold-systemet for sterke og stabile former, men velger denne gang en billigere løsning med vanlig glassfiber og polyester. Det er viktig å unngå for mye tykkelse av polyester i ett lag for å forhindre varmeutvikling og deformasjon av formen. Formen bygges opp i tre lag for styrke og stabilitet, spesielt for å tåle trykket fra ekspanderende polyuretan.

  • 00:05:00 - 00:10:46

    Matsui fortsetter med å forklare hvordan formen forberedes for fylling med polyuretan. En slippmiddel påføres for å sikre at intet setter seg fast. Polyuretanen fylles i formen, ekspanderer raskt og fyller volumet. Det ferdige skummet trimmes og tilpasses formen med plastfolie og polyesterlag som påføres for en glatt overflate, da eventuelle feil er vanskelige å rette opp på polyuretan. Deretter følger en forbedringsprosess hvor han tester og finjusterer for å oppnå et bedre resultat med ulike prototypestadier og bruk av in-mold coatings for en skinnende overflate.

Mind Map

Mind Map

Faqs

  • Hva slags materialer trenger jeg for å lage en form?

    Du trenger en gelcoat, vanlig glassfiber og laminatpolyester, samt en utløsningsmiddel for å lage formen.

  • Hvordan lager man en sterk form?

    Du skal legge et lag med gelcoat, la det tørke, og deretter påføre flere lag med glassfiber.

  • Kan jeg korrigere feil på polyuretan-deler?

    Ja, men det er krevende å fikse feil på polyuretan siden du ikke kan pusse det ned som fiberglass.

  • Hva er forskjellen mellom denne polyuretanen og byggeskum?

    Polyuretan som brukes her er tettere og har en annen cellestruktur enn vanlig byggeskum.

  • Hvordan får jeg en blank finish på polyuretan-delen min?

    Du kan bruke in-mold coating for å oppnå en blank overflate på polyuretan-delene.

  • Hvor mye ekspanderer polyuretan-skummet?

    Polyuretanskummet kan ekspandere opp til 16 ganger sin opprinnelige størrelse.

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  • 00:00:00
    hi everyone my name is Matsui and in
  • 00:00:02
    this video I'll show you how I've used
  • 00:00:03
    this soft squishy like polyurethane to
  • 00:00:08
    make these Ironman masks so a lot of
  • 00:00:11
    like improvising or testing was involved
  • 00:00:14
    so I'll go through all the steps of what
  • 00:00:16
    I have learned and explain you how to do
  • 00:00:18
    like a good finished part so it's all
  • 00:00:21
    starts with the mold so I'll be coding
  • 00:00:24
    the pre molds that their hats to make
  • 00:00:27
    like a new mold so the first layer would
  • 00:00:29
    be the gel coat if you want to see more
  • 00:00:31
    details about mold making you can check
  • 00:00:33
    out my youtube channel you'll find some
  • 00:00:35
    mold making videos on there as well so
  • 00:00:37
    the first layer is the gel coat and then
  • 00:00:40
    you wait for it to go tacky and what I
  • 00:00:43
    would normally do what's making molds is
  • 00:00:45
    using the Uni mold system so it's better
  • 00:00:48
    to make like stable strong moles in one
  • 00:00:50
    go
  • 00:00:51
    but I decided to try this out so it's a
  • 00:00:53
    cheaper option to go it's regular
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    fiberglass and just like the normal
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    laminating polyester so one thing to
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    keep in mind when using these like basic
  • 00:01:05
    regular polyester resins is not to build
  • 00:01:08
    up too much too much thickness in one go
  • 00:01:11
    because it could go exit thermal and
  • 00:01:12
    warp your mold around so a good solution
  • 00:01:15
    is to apply a first layer
  • 00:01:17
    wait for it to cure then you send it
  • 00:01:19
    back down just to have like a good
  • 00:01:22
    mechanical grip for the next layers
  • 00:01:24
    coming on top and then I did this in
  • 00:01:27
    three times so it's quite a nice build
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    up it's a strong mold and it's a stable
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    mold that way so as you can see here the
  • 00:01:35
    last layer is applied so it's a
  • 00:01:36
    finishing layer and about four layers of
  • 00:01:39
    450 grams fiberglass was added so a
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    pretty thick strong mold for this piece
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    because there could be a lot of pressure
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    being involved with the polyurethane
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    expanding so you'll see later on in the
  • 00:01:54
    video what I mean which the polyurethane
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    expanding so as you can see the mold is
  • 00:01:59
    about five millimeters thick and I don't
  • 00:02:03
    know in inches how much that would be
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    but you can check it on Google and so
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    the next step is to add a release agent
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    so the easy lease is
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    common release agents for various types
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    of resins and coatings so I'm using this
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    one there are specific release agents
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    for poly urethanes as well I think it's
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    a PW I'll try to add it in the
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    description and below so what I did
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    there is to make a closed mold I have to
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    finish the part first so I've started to
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    at making first part with fiberglass
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    into the mold and then I'm just like
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    filling the volume with expanding
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    polyurethane foam so this is not sped up
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    as you can see it goes quite rapidly so
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    it's a heavy reaction going on there and
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    it's a foam that will expand about 16
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    times in volume so this is a
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    polyurethane and you cannot compare it
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    with building polyurethane because this
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    is more dense in its cells like the
  • 00:03:08
    structure of the foam but that way we
  • 00:03:11
    were able to fill the entire void and
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    then on top we'll add a second layer so
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    here I'm just trimming everything up to
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    the side like this would be the size of
  • 00:03:23
    the part that I want to create with the
  • 00:03:25
    polyurethane so I'm just cutting
  • 00:03:28
    everything flush sending all the
  • 00:03:30
    polyurethane flush and then I'm just
  • 00:03:33
    using some masking tape all around the
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    edge to avoid having the polyester resin
  • 00:03:40
    that we'll be using right here dripping
  • 00:03:42
    off the sides because this part still
  • 00:03:44
    has to fit into the mold that we've made
  • 00:03:46
    previously so what I'm using is a sheet
  • 00:03:49
    of plastic and I'm laminating the shape
  • 00:03:51
    roughly onto the plastic first and then
  • 00:03:55
    I apply it onto the foam that we had so
  • 00:03:58
    once cured I can send it down just to
  • 00:04:01
    remove all the erased edges because we
  • 00:04:04
    want a smooth surface surface as well
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    right here because the surface will be
  • 00:04:09
    exactly the same on your parts that
  • 00:04:11
    you'll be making in polyurethane and so
  • 00:04:13
    the thing is it's very hard to sense or
  • 00:04:16
    to correct mistakes on a polyurethane
  • 00:04:19
    part if you're making fiberglass parts
  • 00:04:21
    you can still send it down at some bar
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    now like I did here but you cannot do
  • 00:04:26
    that on the finish
  • 00:04:27
    Bartz it's exactly the same with silicon
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    for example so I'm using an easy to
  • 00:04:32
    sense topcoat here so it's um it's like
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    very easy to sense and to bring it to a
  • 00:04:39
    higher level of gloss so I send it till
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    800 because I knew that the mold will
  • 00:04:44
    still have to be sanded after that so
  • 00:04:46
    I've added some release agents to make
  • 00:04:49
    sure that's nothing which stick onto
  • 00:04:51
    this parts or the mold and then it's
  • 00:04:54
    just again like in the beginning
  • 00:04:55
    applying the gel coat and then applying
  • 00:04:58
    multiple layers of the fiberglass so the
  • 00:05:02
    easier thing here is that it's an easy
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    shape so it's like just a rectangular
  • 00:05:06
    shape so I'm preparing everything on a
  • 00:05:09
    sheet of plastic again and then apply it
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    on top so I've added I think the same
  • 00:05:15
    amount of layers and like I said in the
  • 00:05:16
    beginning of the video is very important
  • 00:05:18
    because a lot of pressure can build up
  • 00:05:21
    with polyurethane expanding and so
  • 00:05:24
    that's why it's very important to have
  • 00:05:26
    like a stiff and a strong mold ideal you
  • 00:05:28
    would have like aluminium molds that are
  • 00:05:30
    CNC milled but due to the expenses of
  • 00:05:33
    that mostly it won't be an option for
  • 00:05:35
    like small numbers of parts that you're
  • 00:05:38
    trying to make so here we see the
  • 00:05:41
    backing releasing quite easily then it's
  • 00:05:44
    just a matter of like bring it back to a
  • 00:05:46
    high gloss and then adding a few venting
  • 00:05:49
    holes so that the polyurethane can
  • 00:05:51
    expand but it wouldn't create like too
  • 00:05:55
    much pressure inside the multi one
  • 00:05:57
    pressure but not too much so I'm adding
  • 00:05:59
    some release agent again and now I'll
  • 00:06:01
    show you the steps that I went through
  • 00:06:03
    so this was the first part then we got a
  • 00:06:06
    little bit better this is the second
  • 00:06:08
    part and then like we improve along the
  • 00:06:12
    way to find like an even better parts
  • 00:06:15
    till the best-looking parts in my
  • 00:06:19
    opinion you could get with a top it's
  • 00:06:21
    like called the in mold coating that
  • 00:06:24
    will create like a nice soft and shiny
  • 00:06:28
    plasticky feel onto your parts so here's
  • 00:06:33
    how it go so I've got the polyurethane
  • 00:06:36
    yeast 60 foam I've used it previously in
  • 00:06:39
    a tutorial that was quite
  • 00:06:41
    and so I decided to make like a better
  • 00:06:44
    video now just to explain how everything
  • 00:06:46
    goes because the first video I shot I
  • 00:06:48
    think it was around six years ago and
  • 00:06:50
    the quality was likely to a shot on a on
  • 00:06:53
    a potato so it's very bad quality so
  • 00:06:55
    this should be a big improvement
  • 00:06:57
    so how everything works is that you
  • 00:06:59
    don't need a lot because it will expand
  • 00:07:01
    quite a bit so I'm using the a
  • 00:07:03
    components so it's it's called V shirts
  • 00:07:07
    or the brand L edits into the
  • 00:07:09
    description and below is from fall semi
  • 00:07:12
    Benelux and you can probably order it
  • 00:07:15
    online so that was the first part and
  • 00:07:17
    it's like the big unknown to begin with
  • 00:07:20
    because you don't know how much it will
  • 00:07:22
    expand and how big it will get so I've
  • 00:07:25
    did the second try and I was just
  • 00:07:27
    running a bit short in the amount that
  • 00:07:30
    was needed to be used so now that I know
  • 00:07:33
    how much volume I need to fill I can
  • 00:07:37
    start doing it with the closed mold so
  • 00:07:39
    um so you gradually go up and then when
  • 00:07:43
    you find the perfect recipe you can
  • 00:07:45
    start closing the mold and I was running
  • 00:07:47
    like a bit short to create like a good
  • 00:07:49
    amount of pressure here because the
  • 00:07:52
    pressure is important to create like a
  • 00:07:53
    nice skin on your part so this was like
  • 00:07:57
    I would say like a good results but I
  • 00:07:59
    was looking for something a bit more
  • 00:08:00
    shiny a bit more like finished the good
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    thing with this is that you can go
  • 00:08:06
    through a lot of like prototyping stages
  • 00:08:09
    in a short time because it cures quite
  • 00:08:11
    rapidly so I think I did - the molding
  • 00:08:13
    after around 20 minutes then it's like
  • 00:08:16
    in a B stage nicely cured so this means
  • 00:08:19
    that it will cure a bit more once it's
  • 00:08:22
    out of the mould but it's easy to handle
  • 00:08:25
    now and remove it from the mold so now
  • 00:08:28
    the big improvements is using the in
  • 00:08:32
    mould coating so the in mould coating
  • 00:08:34
    will create that nice almost like gel
  • 00:08:37
    coats finish so it's very you can
  • 00:08:40
    compare it to a gel coat but made out of
  • 00:08:42
    polyurethane to create those like shiny
  • 00:08:46
    skins polyurethane soft parts parts so I
  • 00:08:50
    was a bit shocked to see how take it to
  • 00:08:53
    us so it's like
  • 00:08:54
    bondo but once mixed with he catalysts I
  • 00:08:59
    think it was around the mixing ratio is
  • 00:09:01
    five on one I've mixed about 150 grams
  • 00:09:05
    for the two parts and then you can apply
  • 00:09:07
    it it's like a bit of a jam
  • 00:09:09
    it's a honey texture texture it's
  • 00:09:14
    residue that you apply onto your mold
  • 00:09:16
    and it will cure quite fast as well so
  • 00:09:18
    you have to move quickly make sure
  • 00:09:20
    everything is ready and then you can
  • 00:09:23
    proceed with the steps that we did
  • 00:09:24
    previously it's pouring the polyurethane
  • 00:09:27
    that will expand so you want to have the
  • 00:09:30
    animal coating in at a key stage but
  • 00:09:33
    secured enough to create like a nice
  • 00:09:35
    come out chemically bounce between the
  • 00:09:38
    soft film that will expand and the shale
  • 00:09:41
    that you create it around it so the hard
  • 00:09:43
    part was mostly removing the ice
  • 00:09:47
    I was running short of materials but if
  • 00:09:49
    I would want to make it better I would
  • 00:09:51
    apply two coats of the in molds and then
  • 00:09:54
    do the the casting of the expanding foam
  • 00:09:59
    at the end so very important is to label
  • 00:10:02
    your molds because I will probably
  • 00:10:04
    forget in six months how much I've used
  • 00:10:06
    so here you can see in grams how much
  • 00:10:09
    was used of each substance so here is
  • 00:10:13
    the results it's a squishy soft Iron Man
  • 00:10:16
    mask so this could be used for furniture
  • 00:10:18
    I would think of something that needs
  • 00:10:21
    some textures around a parts that needs
  • 00:10:24
    to be soft like grips and so on so this
  • 00:10:27
    is a result and it will come back to its
  • 00:10:29
    shape after you pushed it so final step
  • 00:10:33
    would be trimming of the edges I did it
  • 00:10:35
    with a piece of sharp scissors and this
  • 00:10:38
    is the result so I hope you like this
  • 00:10:39
    video don't forget to Like and subscribe
  • 00:10:41
    and see you guys in the next one
Tags
  • polyuretan
  • Ironman-masker
  • formlaging
  • gelcoat
  • glassfiber
  • ekspanderende skum
  • in-mold coating
  • polyuretanskum
  • DIY
  • maskefremstilling