First relatively successful scratch build

  1. #1

    Member Since
    Oct 2006
    Posts
    10

    First relatively successful scratch build

    Hey. I'm not new to the site, I just lurk around and look at some of the great work here. I thought I'd give it a try. My first attempt resulted in anger and a crushed bucket. This time I've used the WOF templates and followed the progress of others. Like many, I've used picture mat board and hot glue. Instead of bondo for the dome however, I used a pre mixed paper mache. I had no issue working with it. It's a little easier to sand and apply. My issue though is that it dries with a porous surface. I figure I can use a light body filler to fix it. Or maybe a few coats of resin would be able to fill those pits? Any ideas? I intend to fiberglass inside and lay a few coats of resin on the outside.
    Thanks.












  2. #2

    Member Since
    Oct 2006
    Posts
    10

    Re: First relatively successful scratch build

    I added the dent today. I cut out the shape from the helmet and glued a piece of cardboard to the inside behind the hole. I used more paper mache mix to fill the hole and used the flat end of a ruler to make the signature lines of the dent. I was going to do the arrows as well, but I thought I would end up losing some of the detail when I coated the helmet in resin. I opted to do it afterwards. The picture makes the dome look worse than it is.
    At this point the dome is flush with the rest of the helmet. After fiberglassing, I'm going to wrap another layer of mat backer board around to create the difference. I've yet to decide on a course of action concerning the pitted surface of the dome. I'd rather not deal with any sort of filler, though a light spackling paste might be alright. I'm hoping the resin will fill the holes and seal the helmet at the same time. I'm waiting on mat and hardener now as far as the rest of the helmet is concerned. Still open to ideas, guys.

    The keyholes in the back are to be added after fiberglassing the inside. Right now, The shape of the helmet is being held together by a strip of cardboard on the inside where the key holes would be. I'm also considering making the rangefinder move with a servo. Keeping my eyes out for a cheap rc car.







  3. #3

    Member Since
    Jul 2009
    From
    Rockland County NY
    Posts
    15

    Re: First relatively successful scratch build

    i AM a noob. so only 2 Q's. how do you fiberglass a bucket? and is it really necessary? (as in how does it affect the result of the finished product?)

  4. #4

    Member Since
    Oct 2006
    Posts
    10

    Re: First relatively successful scratch build

    The necessity of fiber glassing depends on a few things, namely the material out of which the helmet is built, and the stress the helmet will undergo. The point of fiber glassing is to strengthen the helmet. With enough layers, your helmet would become very rigid and durable. Fiber glassing requires a combination of mat, resin, and hardener. Google, as well as many other threads, has more information as to the specific procedure.
    Last edited by Dustfinger; Aug 2, 2009 at 2:35 PM.

  5. #5

    Member Since
    Oct 2006
    Posts
    10

    Re: First relatively successful scratch build

    I put the first layer of fiberglass on the inside today. It's still flexible, but I'm going to put at least another layer on, if not more. I bought a new tube of hardener and mat today. I ended up using almost all of the hardener. I didn't take time to measure it out, so I figured more would be better than less. I managed to do it with 3 small batches, plus it only took a little more than an hour to cure. It's not tacky. Getting more hardener on Tuesday. Between then I'll work on coating the ears and making the keyholes.








  6. #6
    stormtrooperguy's Avatar
    Member Since
    Dec 2004
    From
    Waltham, MA
    Posts
    5,039

    Re: First relatively successful scratch build

    the trouble with using too much hardener is that it can make the stuff really brittle. next time 'round you should really try to measure it out

    it looks to be coming along nicely!

  7. #7
    Darth Voorhees's Avatar
    Member Since
    Dec 2007
    From
    Brooklyn/NYC
    Posts
    2,916

    Re: First relatively successful scratch build

    ya...what he ^ said...

    Looks like its comin out awesome though!..makes me wanna finish mine....after the vaders though...after the vaders...lol

  8. #8

    Member Since
    Oct 2006
    Posts
    10

    Re: First relatively successful scratch build

    Thanks, guys. I get excited when I work on my helmet, and I guess I skip stuff like that. I'll definately keep an eye on the ratio next time, though. I should have some more of my progress up soon.

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