Expanding Soft Polyurethane Foam - E60 PUR V-sure

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

Ringkasan

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.

Garis waktu

  • 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.

Peta Pikiran

Mind Map

Pertanyaan yang Sering Diajukan

  • 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.

Lihat lebih banyak ringkasan video

Dapatkan akses instan ke ringkasan video YouTube gratis yang didukung oleh AI!
Teks
en
Gulir Otomatis:
  • 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
  • 00:00:55
    fiberglass and just like the normal
  • 00:00:58
    laminating polyester so one thing to
  • 00:01:01
    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
  • 00:01:30
    up it's a strong mold and it's a stable
  • 00:01:31
    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
  • 00:01:44
    pretty thick strong mold for this piece
  • 00:01:48
    because there could be a lot of pressure
  • 00:01:51
    being involved with the polyurethane
  • 00:01:52
    expanding so you'll see later on in the
  • 00:01:54
    video what I mean which the polyurethane
  • 00:01:57
    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
  • 00:02:05
    but you can check it on Google and so
  • 00:02:08
    the next step is to add a release agent
  • 00:02:11
    so the easy lease is
  • 00:02:13
    common release agents for various types
  • 00:02:16
    of resins and coatings so I'm using this
  • 00:02:20
    one there are specific release agents
  • 00:02:24
    for poly urethanes as well I think it's
  • 00:02:25
    a PW I'll try to add it in the
  • 00:02:30
    description and below so what I did
  • 00:02:32
    there is to make a closed mold I have to
  • 00:02:35
    finish the part first so I've started to
  • 00:02:38
    at making first part with fiberglass
  • 00:02:41
    into the mold and then I'm just like
  • 00:02:44
    filling the volume with expanding
  • 00:02:47
    polyurethane foam so this is not sped up
  • 00:02:50
    as you can see it goes quite rapidly so
  • 00:02:52
    it's a heavy reaction going on there and
  • 00:02:55
    it's a foam that will expand about 16
  • 00:02:58
    times in volume so this is a
  • 00:03:00
    polyurethane and you cannot compare it
  • 00:03:03
    with building polyurethane because this
  • 00:03:05
    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
  • 00:03:13
    then on top we'll add a second layer so
  • 00:03:17
    here I'm just trimming everything up to
  • 00:03:20
    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
  • 00:03:36
    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
  • 00:04:06
    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
  • 00:04:23
    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
  • 00:04:29
    for example so I'm using an easy to
  • 00:04:32
    sense topcoat here so it's um it's like
  • 00:04:37
    very easy to sense and to bring it to a
  • 00:04:39
    higher level of gloss so I send it till
  • 00:04:42
    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
  • 00:05:04
    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
  • 00:05:11
    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
  • 00:08:04
    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