Best fabrication method for one off kayak catch bin

Discussion in 'Fiberglass and Composite Boat Building' started by IronPrice, Dec 18, 2017.

  1. IronPrice
    Joined: Jul 2017
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    Location: NZ

    IronPrice Senior Member

    Thanks that makes sense
     
  2. IronPrice
    Joined: Jul 2017
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    Location: NZ

    IronPrice Senior Member

    You did say that. With the differing contributions and suggestions from various people I have gotten somewhat confused ;)
     
  3. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    I'm puzzled. From the picture, it looks like you already have tie down points to hold that shock cord on the rear deck. Wouldny they do ?
     
  4. IronPrice
    Joined: Jul 2017
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    Location: NZ

    IronPrice Senior Member

    I took that photo the morning I bought the kayak. The shock cords over the rear well were gone by lunchtime :)

    Shock cord is a magnet for fishhooks. If I get a dangling lure snagged in those rear shock cords reaching back to unhook it carries a significant risk of capsize. I've kept the shock cord paddle keeper as I can reach that easily.

    I also don't trust shock cords if I roll the kayak when re-entering through the surf zone - which happens :oops: a few times every season.

    The shock cord buckles on the side deck are mounted to brass threaded inserts. I could reuse them - depending how wide I make the upper half of the fish-case. I intend to have a flange coming out over the narrow side decks.

    A tidy solution would be to have vertical grooves in the catch-bin at the locations of the threaded inserts. Then whatever I use to secure the catch-bin can sit down in those grooves out of the way. That would make the shape more complex and to maintain insulation thickness I would sacrifice internal width at those points. So there is a trade off to consider there

    I hope to start on some cardboard templates this weekend, so I may get a better idea then of what could work.
     
    Last edited: Jan 17, 2018
    rwatson likes this.
  5. fallguy
    Joined: Dec 2016
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    fallguy Senior Member

    Cardboard schmardboard.

    Get a piece of 2” pink polystyrene from home depot and a tape measure. It cuts with a utility knife or old fillet knife after utikity cut to depth. You can toothpick it together or hotglue in two spots.

    You need the ply backer for lid hinges and mounting gear. Just determine where and hog out the foam there and glue it in with epoxy and any filler really. Just keep the ply a hair low so it can be faired outta sight.

    Once you have the outline box; you can glue it up. I’d put factory edges up and align them first; then glue join to the base; that way the lid will fit nice. You can shoebox the lid. Do no glass until it is all formed up.
     
  6. fallguy
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    fallguy Senior Member

    By the way, I am building one of these as well in the next year. Some same, some diff
     
  7. IronPrice
    Joined: Jul 2017
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    Location: NZ

    IronPrice Senior Member

    12 hour flight to the nearests home depot.
    That's pretty much my plan. I have hot wire I can use for cutting the foam. Tooth picks and hot glue for the temporary assembly

    The bottom half will be as easy as you suggest. The top half, which will angle up above the side decks will be more complex.

    The reason for the cardboard is to try a few different ideas for the top half and see what works and how it looks. I have a large TV box I kept for this purpose.

    What do you mean by "Shoe box the lid"?
     
  8. fallguy
    Joined: Dec 2016
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    fallguy Senior Member

    A shoe box has a classic cover, but hinging it is trickier unless you leave it a little big on the front. A shoe box cover is stable when thin because of the 90 degree bends around the edges. You could shoebox, or you could do a flat cover. Mine will be a hatch style opening. Buying a commercial one; so can’t help with compares.

    I don’t like my shoebox idea because it’d be messy if there is fish blood, goo. I only offered it for the strength of it.
     
  9. IronPrice
    Joined: Jul 2017
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    Location: NZ

    IronPrice Senior Member

    I understand what you mean by shoe box now. I'm not sure what I'll do for hatch yet.

    I was looking at pre-made hatches yesterday and none of them were the right shape.

    On the commercially made fish pod my previous kayak came with, the lid swivel back like the visor on a motorcycle helmet.
     
  10. rwatson
    Joined: Aug 2007
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    Location: Tasmania,Australia

    rwatson Senior Member

    If you cant find a suitable ready made, you can create "lips" for either the bin or the lid by temporarily hotgluing a series of wood or foam blocks around the edge, and embedding in fg.

    An example here
     

  11. IronPrice
    Joined: Jul 2017
    Posts: 153
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    Location: NZ

    IronPrice Senior Member

    Thanks. I'm leaning toward a soft hatch with a zipper around 80% of the perimeter. Once unzipped, it will largely stay in place and I can push fish through it one handed. I won't need to secure it in an open position.

    A lip like you describe, would be perfect for mounting one half of the zipper.
     
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