[Central] Moldmaking for newbies

Discussion in 'Halo Costumes and Armor' started by falcon NL, Oct 2, 2007.

  1. Spartan 010

    Spartan 010 Jr Member

    Well, there has been no activity on this thread for a while, but I'll try anyway...

    I'm making a Perfectly-as-humanly-possible M6 Magnum from Halo: Reach out of plexiglass sheeting. It's just about finished and it is by far the best prop I have ever made.

    As soon as it is finished I wanted to make a mold from it and pop them out like crazy.

    So far as I can tell the best mold making rubber would be : http://www.smooth-on.com/Silicone-Rubber-an/c2_1113_1136/index.html?catdepth=1
    OOMOO 25 - Trial Size
    Medium softness easy to use tin cure silicone rubber - Shore 25A hardness.
    1:1 mix ratio by volume - no scale or vacuum required.
    75 minute cure time.
    Net Weight : 2.8 Lbs.

    This is my first time doing this sort of thing. Whenever anyone tries to do something new, they dont want to make any mistakes. Since I dont have a ton of money, I make it a point not to make any mistakes. I've done tons of research and have read and watched just about everything possible to learn. The last thing to do, is to actually do it.

    However, I got an idea about making the mold "cheaper." I dont know if it will work though... Does anyone know if it would be possible to use:
    FlexFoam-iT! V - Trial Size
    5-lb. Flexible Polyurethane Foam. 1A:1B By Volume Mix Ratio -
    No Scale Required
    Net Weight : 2 Lbs.

    instead of using the OOMOO. It expands into something like 20x the amount actually used. Do you see where I'm going?

    Would it be possible to make a mold from FlexFoam? 1 oz would technically be 20oz (in size, not weight) It puffs up and hardens, BUT it is flexible so I would imagine that it could be used as a mold.

    Thanks for reading! Any suggestions would gladly be taken.
  2. Bossman acree

    Bossman acree New Member

    My eva build

    hello all, i am new here to the 405th, i very much so want to make an EVA helmet but i wanna vacuum shape the visor, i am right now pepping the actual visor using 110 weight cardstock. when im done i wanna resin coat it and bondo it for use with a homemade vacuum table. yet im wondering what type of plastic should i use and how to get the gold finish. im working the halo 3 eva build by slyfo. i wanna make the engravements in the helmet. i have a woodburning kit pen that does have a special tip for plastic. do you guys think that'll work???? any help or advice is greatly appreciated
  3. Admiral Tiberius

    Admiral Tiberius Jr Member

  4. Bossman acree

    Bossman acree New Member

    thank you a bunch ^_^
  5. Admiral Tiberius

    Admiral Tiberius Jr Member

    glad to help
  6. Rubber Slug

    Rubber Slug New Member

    If I use craft foam to detail my helmet, would it hold up during the molding process? Would I need to seal it first somehow?
  7. Firefly887

    Firefly887 New Member


    Quick (and probably silly) question for you fine ladies and gents: if there are small bits that stick out on my model, should I remove them before applying the silicon and then reattach them to the final cast? I'm sculpting an N7 helmet and there are those little wing-like parts that stick out on the sides and loop back in towards the center-rear. I've never made a mold of something this complex before and don't want to ruin my sculpt. Is a box mold the way to go for those little parts?

  8. Halo Master

    Halo Master

    Ok everyone, I have a (hopefully) quick question. So I am going to make a H3 magnum for my next build. I was thinking about making out of foam core poster board. Then after it is almost perfect make a box mold for it. I have a pretty good understanding of how to make one of those. But my real question is how will the foam core react to silicone? I am probably be using Rebound 25 to make the mold. If anyone knows that would be great.


  9. Shelbiegirl18

    Shelbiegirl18 New Member

    hi, uh im brand new to cosplaying and id really like to cosplay a female spartan for cardiff comicon next month. the thing i i dont have alot of money and i havent got much time to make one, what can i do?
  10. Spartan

    Spartan New Member

    Cool, this will help a lot with my first armor model. Probably going to do CQB, EVA, or Scout. Either way wish me luck.
  11. Raven

    Raven New Member

    To be honest, This is my first time looking to make my own armor. I want venator armor. I have no clue how to start or what to do. I want it to be the best possible quality i have around 400$ to work with. any help at all what so ever will be greatly appreciated. Thank you so much sorry if i come off as an idiot, but i am xD
  12. Noble 10

    Noble 10

    we do we need moldes
  13. falcon NL

    falcon NL Well-Known Member

    Holy Moly this is still a active topic...maybe i should update this a bit ^^
  14. nrettenmaier

    nrettenmaier Member

    Hey guys is there anyway to update this thread. From what I remember way back when it gave some really good information and helped me out when I first started casting but all the pictures/videos don't load anymore (which are very helpful when I start trying something new and I assume is the case for others). If not I feel like it shouldnt be a sticky anymore since its not as helpful without them.

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