Infusion of hull mold video

Discussion in 'Fiberglass and Composite Boat Building' started by jim lee, May 6, 2009.

  1. jim lee
    Joined: Feb 2007
    Posts: 368
    Likes: 20, Points: 18, Legacy Rep: 247
    Location: Anacortes, WA

    jim lee Senior Member

    1 person likes this.
  2. KnottyBuoyz
    Joined: Jul 2006
    Posts: 829
    Likes: 56, Points: 0, Legacy Rep: 685
    Location: Iroquois, Ontario

    KnottyBuoyz Provocateur & Raconteur

    Cool video Jim. That is an incredibly complex shape to infuse. Did you end up with any dry spots? Oh, it's not "monkey poop" it's technical name is "gorilla snot"! Just for the record! ;-)
     
  3. MarboMan
    Joined: Nov 2008
    Posts: 12
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Orlando FL USA

    MarboMan Junior Member

    Can you show us some pics of the demolding process?

    It would be nice to see the finished part.

    Thanks for your time making this video.
     
  4. jim lee
    Joined: Feb 2007
    Posts: 368
    Likes: 20, Points: 18, Legacy Rep: 247
    Location: Anacortes, WA

    jim lee Senior Member

    Sure..

    Here's the mold once the bag has been removed.. We had almost no problems with dry spots, except for the very rear starboard corner. Most of the problem was in the trim flange so it was cut off, but there was a little bit of hand work to fix it. The second part, covering the lower transom, we shot it later and that was a nightmare. I guess we were too cocky when we did that bit.

    [​IMG]

    Now with the frame/car wheels added..

    [​IMG]

    And lastly, complete, ready to make a part.

    [​IMG]

    As it sits today with the first infused deck in it. We're building the cart for the deck as I type.

    [​IMG]

    For more story and pictures.. Click on my "Left Coast" sig. link.

    -jim lee
     
  5. Clinton B Chase
    Joined: Mar 2005
    Posts: 227
    Likes: 2, Points: 18, Legacy Rep: 21
    Location: Saco, ME

    Clinton B Chase Senior Member

    Jim, I sent you an email. First, I love the video. I teach composites to high school kids and they will like this vodeo. I took interest in the fact that you are in a start up phase applying VIP to small boats. I am working on the same on the side; wanting to do it full time. I've been in wooden boatbuilding for several years.

    Did you make a wood hull as a plug or make a dedicated plug for you boats you are infusing? I ask b/c the dilemma I want to figure out is whether to make a cedar strip-glassed hull #1 for a daysailor I have designed (and to finish that hull out for myself after the mold is made) or if I want to make a cheap plug and then toss the plug. I have heard about nightmares keeping a finish on a boat that was used to make a mold due to all the release agents used in the hull. I'd love to hear you thoughts.

    Also, have you dipped your oar yet into the world of spar making?

    Clint
     
  6. jim lee
    Joined: Feb 2007
    Posts: 368
    Likes: 20, Points: 18, Legacy Rep: 247
    Location: Anacortes, WA

    jim lee Senior Member

    Clint, never got your e-mail. I did see that you signed up on our LC forum and had a look at your boat building school www site.

    The hull mold :

    The boat was designed in a CAD package. Then Leif took the hull shape he'd come up with and ran it in a sailing simulator for a few weeks doing changes 'till he got the performance he wanted out of it. This resulted in a 3D hull shape that we sent over to the local plug milling shop (Bayview Edison) They milled out the plug straight from the 3D model. From there we had the hull mold built by the local tooling people (Fast passage). So no, it was done straight from digital to mold. No prototype hull.

    The deck :
    We did the deck entirely by hand. The thinking was that this part is the bit the humans have to deal with, so let the humans build it. I'm really glad we decided to do it that way because, as the project progressed, there were things we decided to change. You look at something full size and think, "Oh that's really silly isn't it?" Out come the saws, hammers, prybars and there it goes.

    Spars? Never tried building a spar.

    -jim lee
     
  7. brokensheer
    Joined: Jun 2009
    Posts: 201
    Likes: 3, Points: 18, Legacy Rep: 14
    Location: So. Md

    brokensheer Senior Member

    Very nice , thank you for sharing this bit of work!
     
  8. Clinton B Chase
    Joined: Mar 2005
    Posts: 227
    Likes: 2, Points: 18, Legacy Rep: 21
    Location: Saco, ME

    Clinton B Chase Senior Member

    Jim, I am investigating spar making. Definitely a commitment!

    Glad you saw about the COmpass Project. I am worried that we won't get funding for the composites program. We are building ply-epoxy skiffs. The goal is to also make a composite skiff, VIP style. We'll see.

    I'd love your thoughts on my other two threads, the Calendar Islands Yawl and making a mold topic.

    Clint
     
  9. jim lee
    Joined: Feb 2007
    Posts: 368
    Likes: 20, Points: 18, Legacy Rep: 247
    Location: Anacortes, WA

    jim lee Senior Member

    Brokensheer, you are very welcome.

    Clint, I worry about your plan of using a existing hull as your plug. Mostly because we've not had a lot of luck pulling molds off of plugs. Mostly we're chipping chunks of plug out of the molds. Even with all the wax and all, the mold tends to shrink onto the plug locking it in there. Something to think about.

    -jim lee
     

  10. Clinton B Chase
    Joined: Mar 2005
    Posts: 227
    Likes: 2, Points: 18, Legacy Rep: 21
    Location: Saco, ME

    Clinton B Chase Senior Member

    Well I didn't think about that, Jim. Thanks. Makes sense.

    I worry about the business end of things too with the start up costs of doing the plug. I guess that could be cheap if I could come up with the man hours and a couple commissions it may be doable.

    Cheers
     
Loading...
Similar Threads
  1. hambamble
    Replies:
    14
    Views:
    3,308
  2. KnottyBuoyz
    Replies:
    8
    Views:
    4,710
  3. KnottyBuoyz
    Replies:
    27
    Views:
    4,611
  4. weldandglass
    Replies:
    0
    Views:
    239
  5. Chotu
    Replies:
    8
    Views:
    463
  6. weldandglass
    Replies:
    2
    Views:
    730
  7. weldandglass
    Replies:
    6
    Views:
    1,187
  8. Jay from WA
    Replies:
    12
    Views:
    1,819
  9. ahender
    Replies:
    8
    Views:
    1,080
  10. S17665
    Replies:
    4
    Views:
    1,186
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.