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Thread: Build Log: IOM

  1. #21
    Join Date
    Nov 2006
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    Northern VA
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    Default Re: Build Log: IOM

    don't thank me... thank claudio and dick... those are the ones who i learned the trick from... pretty nifty....

    here is my project for today...16.7 lbs of dry aged rib roast...
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    Marc

    S1M 1981
    Victoria 81
    RG65 181
    IOM 81, 681, 881

  2. #22

    Default Re: Build Log: IOM

    LOL mine was a 15lb turkey that my wife was giving out about cos it was too big for the oven
    No race is finished till the finishing line is crossed !

    IOM Goth XP (Frank Russell Design), Frank RD sails, RMG winch
    A Class Sweet 9, Frank RD sails and RMG Winch
    Replica of Jet Service 2 1.7m in sailing condition
    Mni40 - Cobra sailed again in Nov 12. Great fun !
    Mini40 - Coyote in construction
    Dragon Force RG65 in sailing condition
    2m Trimaran project: first draft drawings done.

    www.IOMIRELAND.org
    www.ACLASSIRELAND.org

  3. #23
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    Nov 2006
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    Northern VA
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    Default Re: Build Log: IOM

    well started working on the keel...

    took a symmetrical heli blade and cut it down the middle and added in a wedge shaped spacer of bass wood. and than have been adding and removing drywall mud to shape and smooth.

    between th eblue lines it is 347mm upper(left) blue line, where it meets the hull is 110mm bottom blue line(right) is 74mm and it will be 17mm deep in the bulb. I have not figured out my keel trunk shape yet...

    the area right of the blue line will be my rudder

    so I am going to use these pieces to make a mold...so I can make some carbon fins...

    So, I guess I gotta get some gelcoat and once I have my shape set, i need to paint and add copious amounts of wax... so I can make a two piece mold...

    do i really need the gelcoat???? I guess I could go with the packing tape method but then I have tape lines to sand out...
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    Marc

    S1M 1981
    Victoria 81
    RG65 181
    IOM 81, 681, 881

  4. #24
    Join Date
    Aug 2006
    Location
    Near New Orleans
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    296

    Default Re: Build Log: IOM

    You probably need gel coat for the first MOLD layer. It will give you something to wetsand and polish if needed, without hitting any glass. You can go with a clear coat of epoxy on the fin layup, and then CF layer once it has thickened up. This will also give you ag molded layer that you can wetsand and polish once out of the mold.

  5. #25
    Join Date
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    Northern VA
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    Default Re: Build Log: IOM

    Hew, I have been using the west system 105 with 205/206 how long until it tacks up enough so the CF or glass doesn't push through...???

    working time on the 205 is 60 minutes on a thin film and 90-100 on the 206

    Just curious as to your experience...on time frame...
    Marc

    S1M 1981
    Victoria 81
    RG65 181
    IOM 81, 681, 881

  6. #26
    Join Date
    Aug 2006
    Location
    Near New Orleans
    Posts
    296

    Default Re: Build Log: IOM

    I learned long ago not to rush things when making molds I use the slow hardener and wait several hours. soft enough that a thumbnail will dent it, but hard enough that no fingerprint or stickyness is there.

  7. #27

    Default Re: Build Log: IOM

    Quote Originally Posted by marcsmith View Post
    had enough glass for Vivid Hull #1....
    Hi Marc! I have just started my first scratch IOM hull. I am very curious of the technique that you used to fiberglass this plug. I think I see that you have strips laid out at an angle and overlapping?
    And from the prior posts that you used different weights of glass, 6,4,2 ounce glass. Is this technique documented anywhere? If not, can you share some of your thoughts on how to best layout the fiberglass?

    Thanks,
    Glenn

  8. #28
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    Default Re: Build Log: IOM

    Glenn

    actually is 6, 2, 1 the 1 ounce is almost silk like in nature...and makes for a nice top coat which is easy to sand...

    the strips you see, is just the packing tape overlaps showing through the wet glass.

    I extrapolated the fiberglass weights from one of claudio posts. Claudio and dick and a few others have used the packing tape method for a while. the packing tape acts like a release agent and keeps the epoxy from bonding to the hull...

    having to sand the hull to remove the fiberglass pattern is probably ly the worst aspect of using a "male plug" method of making a hull...

    I will be working on my first female mold for the keel/rudder.

    I did make a female mold of a keel bulb for an RG 65... I'll take some pics and most later in my albacore post. while not perfect, it needs to be sanded and shaped....
    Last edited by marcsmith; 01-13-2013 at 09:54 AM.
    Marc

    S1M 1981
    Victoria 81
    RG65 181
    IOM 81, 681, 881

  9. #29
    Join Date
    Nov 2006
    Location
    Northern VA
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    Default Re: Build Log: IOM

    cut and machined the deck attachments and did a trial fit.. also been painting and sanding the keel and rudder plugs... and playing with the milling machine...
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    Marc

    S1M 1981
    Victoria 81
    RG65 181
    IOM 81, 681, 881

  10. #30
    Join Date
    Nov 2006
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    Northern VA
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    Default Re: Build Log: IOM

    :( now I'm bummed out...

    all the time spent on the keel fin and rudder... while not totaly lost... I have a set back....

    got the tooling gel coat got the parts all waxed up nice and smooth and preped it all of half of the mold....

    did this saturday afternoon and attempted to remove everthing today....

    smoothed on a coat of the tooling gelcoat (black stuff) let it set and get tacky... and then started the glass layup over he course of several hours. did several layers of chopped strand and some wood for support....

    was frustratingly difficult to get everything separated... and in the process of getting everything separated. the rudder and keel and were damaged...not irreparable. but, just more work to do...

    the parts of the the entire gel coat surface is dull so a fair amount of waxing is going to need to occur to even get the current halves remotely close to being able to accept a layup of carbon and epoxy.... and I still have the second half to go...

    sad to say but I think I could have gotten a better result using the packing tape as my "mold release" agent... have a couple small spots were the gel coat never hardened... again though I had mixed it plenty well...

    Oh well, time to sand and prep the fin and rudder all over again..... next time, going to use packing tape I think... at least its a sure thing...
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    Marc

    S1M 1981
    Victoria 81
    RG65 181
    IOM 81, 681, 881

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