Gel coat spray systems

Discussion in 'Boatbuilding' started by Synapse, Mar 11, 2008.

  1. Roly
    Joined: Jul 2005
    Posts: 508
    Likes: 23, Points: 18, Legacy Rep: 222
    Location: NZ

    Roly Senior Member

    Sorry Fanie, was quoting Landlubber.
    I only have a sharp with a 2.4 tip gravity feed.
    Dunno what a putty gun is. But I am blending gelcoat soon, where I marry deck to hull (rebate) , so I better find out.:D
    Either that or spray with PU.
     
  2. the1much
    Joined: Jul 2007
    Posts: 3,897
    Likes: 44, Points: 0, Legacy Rep: 696
    Location: maine

    the1much hippie dreams

    if your just doing that small of an area,,,and your gonna have to sand no matter what,,,wouldnt it be easier and faster to just brush it on?
     
  3. Roly
    Joined: Jul 2005
    Posts: 508
    Likes: 23, Points: 18, Legacy Rep: 222
    Location: NZ

    Roly Senior Member

    Yeah probably......but I never get to use my gun.....:mad:
    68' x 4" wide = 22ft^2 is a bit of gelcoat??????? (34' boat)
    F@(K hope I have enough left!!!!!!
    22 /11 = 2m^2 Yup, i have enough (1L @ 0.5mm thick)
    Thx, 1much, for getting my grey matter 2 work.

    Guess i'm gonna be doin some cuttin 'n polishin.
    Will I have to put some clear resin on top to get the same lustre as the molded gelcoat???

    Will post some pictures (if this sounds like gibberish), as we pop the deck tomorrow.
    Yahhoooo....oooooo
     
    Last edited: Mar 13, 2008
  4. the1much
    Joined: Jul 2007
    Posts: 3,897
    Likes: 44, Points: 0, Legacy Rep: 696
    Location: maine

    the1much hippie dreams

    nope,,you'll need to wet sand it,,then buff it,,,then you'll wanna do the rest of ya boat to match hehe ;)
     
  5. Roly
    Joined: Jul 2005
    Posts: 508
    Likes: 23, Points: 18, Legacy Rep: 222
    Location: NZ

    Roly Senior Member

    then you'll wanna do the rest of ya boat to match hehe ;)

    With my fingers and toes crossed..... if I can get it as good as the deck I'll be happy! (I haven't seen it yet but we buffed the mold for hours and waxed 5 separate times.)
     
  6. fiberglass jack
    Joined: Dec 2005
    Posts: 463
    Likes: 16, Points: 0, Legacy Rep: 95
    Location: toronto

    fiberglass jack Senior Member

    a putty gun is just another name for a primer gun with a large tip you can buy a gun with a 2.0 or 2.5 tip and will spray gelcoat, a dump gun with paper cups is best, they also sell a dump gun with a contaner that holds 8 litres and is feed with a tube you just have t hang the bucket of gel higher ie gravity feed,
     
  7. Landlubber
    Joined: Jun 2007
    Posts: 2,640
    Likes: 124, Points: 0, Legacy Rep: 1802
    Location: Brisbane

    Landlubber Senior Member

    fibreglass jack, yeah, thanks mate, and also the question about sytrene making resin yellow, yes that can happen, just don't thin too much! Not needed anyhow to be like milk, we are not spraying finish coats here, just gelcoat.
     
  8. Roly
    Joined: Jul 2005
    Posts: 508
    Likes: 23, Points: 18, Legacy Rep: 222
    Location: NZ

    Roly Senior Member

    Came out pretty good all in all. A little imprinting of faults in a mold (that hasn't been used for 25 yrs). The odd void under gelcoat where the fancy cornice molding is, and styrene attack on the transome where gelcoat was too thin.Our block off of the mold (transom/coaming) was cheap & cheerful so gelcoat work to be done there as well.
     

    Attached Files:

  9. the1much
    Joined: Jul 2007
    Posts: 3,897
    Likes: 44, Points: 0, Legacy Rep: 696
    Location: maine

    the1much hippie dreams

    im surprised it came out that good,,,,considering the dude in the picture has feathers comming outta his *** hehe ;)
     
  10. Roly
    Joined: Jul 2005
    Posts: 508
    Likes: 23, Points: 18, Legacy Rep: 222
    Location: NZ

    Roly Senior Member

    Now that you mention it, he sounded a tad gay. Who cares, he was pretty good on the hiab and didn't "crack my deck." :p
    BTW, check the deckmold b4 we got to it. Cow pats 'n all!

    Thanks for all the help from you guys. Especially Waikakikin (jeff).I'm pleased with the transom mod.
     
  11. the1much
    Joined: Jul 2007
    Posts: 3,897
    Likes: 44, Points: 0, Legacy Rep: 696
    Location: maine

    the1much hippie dreams

    now remember,,,,sounding gay is better then being,,hehe ;)
    and you should frame the "before" pic.,and leave it hanging in the boat,,,and do i hear a boat name emerging??( cow mold) hehe ;)
     
  12. tinhorn
    Joined: Jan 2008
    Posts: 575
    Likes: 20, Points: 18, Legacy Rep: 310
    Location: Massachusetts South Shore.

    tinhorn Senior Member

    Man, that is sweet!

    (I always get a bit misty-eyed at birthings.)
     
  13. Landlubber
    Joined: Jun 2007
    Posts: 2,640
    Likes: 124, Points: 0, Legacy Rep: 1802
    Location: Brisbane

    Landlubber Senior Member

    Is it a Cavalier?
     
  14. Roly
    Joined: Jul 2005
    Posts: 508
    Likes: 23, Points: 18, Legacy Rep: 222
    Location: NZ

    Roly Senior Member


  15. WorWilly
    Joined: Apr 2009
    Posts: 11
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Newcastle

    WorWilly Junior Member

    Hi guy's you talk about small area spraying, what do you use with larger moulds, there appears to be many sytems on the market, internal mix, external mix, which is the best system. Also I agree gelcoat should never be thinned.
     
Loading...
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.