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Thread: Hatches and Butterfly hatch thread

  1. #1
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    Default Hatches and Butterfly hatch thread

    A bit of a follow on from Ians' revived "Ventilating hatch on Grantala" thread. For those of us in the planning, building, rebuilding, modifying, restoring or any other mode that has us looking at hatches and what style to use and how to build them:

    Please show us your hatches!! In particular ideas for Buttefly hatches and Sliding hatches, but any other innovative or particularly attractive hatch ideas that you may have incorporated into your vessels.......Pleeeease!!!????
    Larks

    “It’s impossible”, said pride.
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    Default Re: Hatches and Butterfly hatch thread

    This might be a bit away from what you intend but when restoring the Folkboat, I installed a couple of mushroom vents. I found it really difficult to find good ones so ended up with light stainless, cheap and nasty ones. I've since seen better ones available in bronze etc. but they're really expensive. However, when I was given the Twister to restore, it came with two really great mushroom vents in chromed bronze - brand unknown. I've brought one to Vietnam and am trying to find a foundry to replicate it. If I can, I'll ask them to make about 10. This coming weekend I'm heading out to a village where I believe they do bronze casting so here's hoping! Rick

  3. #3
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    Default Re: Hatches and Butterfly hatch thread

    Keep us informed Rick....and don't forget to spread the love if you do manage to get som made..
    Larks

    “It’s impossible”, said pride.
    “It’s risky”, said experience.
    “It’s pointless”, said reason.
    “Give it a try”, whispered the heart.

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  4. #4
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    Default Re: Hatches and Butterfly hatch thread

    .
    Maurice Griffiths' leak-proof hatch -- as he said, it will only leak if submerged....

    Visit us to see how we help people complete classic boats authentically.

  5. #5
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    Default Re: Hatches and Butterfly hatch thread

    If successful, I'll let you know. Rick

  6. #6
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    Default Re: Hatches and Butterfly hatch thread

    Before;



    During;



    After;



    1955 Paul Luke, 33' Yawl

  7. #7
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    Default Re: Hatches and Butterfly hatch thread

    Those screw heads really need to be better seated......
    Wakan Tanka Kici Un
    ..a bad day sailing is a heckuva lot better than the best day at work.....
    Fighting Illegal immigration since 1492....
    Live your life so that whenever you lose, you're ahead."
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    Default Re: Hatches and Butterfly hatch thread

    Quote Originally Posted by paladin View Post
    Those screw heads really need to be better seated......
    Are you concerned about injury they could inflict?
    ..don't judge a man till you've walked a mile in his shoes..

  9. #9
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    Default Re: Hatches and Butterfly hatch thread

    a bit of that plus the hatch will leak....
    Wakan Tanka Kici Un
    ..a bad day sailing is a heckuva lot better than the best day at work.....
    Fighting Illegal immigration since 1492....
    Live your life so that whenever you lose, you're ahead."
    "If you live life right, death is a joke as far as fear is concerned."

  10. #10
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    Default Re: Hatches and Butterfly hatch thread

    This is Stephen's skylight from Carlotta ....I hope he doesn't mind me posting it .



    What I would like to know is what modifications to the basic design would readers make so a skylight was fit for deep ocean use ? In other words occasional submersion in green water .
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

  11. #11
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    Default Re: Hatches and Butterfly hatch thread

    I would fabricate a solid cover so that tons of water don't shatter the glass. To be added in the event of weather, not perm.

    O

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    Default Re: Hatches and Butterfly hatch thread

    Agreed , a couple of metal plates probably but I was thinking of improvements to the normal gasket ,seals and rebate setup .
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

  13. #13
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    Default Re: Hatches and Butterfly hatch thread

    Why not just use thicker, shatter-proof glass?

    By the way, I took my old mushroom vent out to a craft village about 20km from Hanoi and found a guy who casts bronze (I hope it's bronze!!) artifacts using traditional clay molding methods. I've asked him to cast 10 vents. They'll probably be a bit rough and I'm not confident of the quality of the metal but I think it's worth having a look to see how they come out. It was about 40 degrees when I went out there but still good fun riding along through the paddies looking for the village and great to see the traditional setup. The quality of finish these guys achieve from these very rough backyard and footpath operations is really unbelievable. I'll take some photos when I go out later in the week to pick up the vents. Rick

  14. #14
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    Default Re: Hatches and Butterfly hatch thread

    Rick ,I'm jealous ! I would LOVE to see the way those guys do it .I've read up a bit on of "third world " technique and what those guys can do with limited materials is very impressive .If the alloy is important to you the best way would probably be to supply specified ingots from the big city .However unless the fitting is going to be submerged the alloy probably isn't that important .

    If that bloke is good and the produce acceptable there might be a market for his wares in Oz ? He might appreciate the custom .
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

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    Default Re: Hatches and Butterfly hatch thread

    I would really love to see some pictures of the village, process and finished product....
    I have a nice old mushroom vent on the bow of my Folkboat....
    1959 "Nordic" (Abbott-built) Folkboat KC36 "Odds n Ends"

  16. #16
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    Default Re: Hatches and Butterfly hatch thread

    I've taken some photos of my main hatch cover, it's rather individual and workman like in finish but it may give a idea or two. I'll post them tomorrow.
    My take is that if you poke someone with a sharp stick they'll get annoyed, if you smile and shake their hand they will be your friends.

    John Welsford

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    Default Re: Hatches and Butterfly hatch thread

    OK, I'll take the camera and see what I can do. Rick

  18. #18
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    Default Re: Hatches and Butterfly hatch thread

    Here's my input.



    My take is that if you poke someone with a sharp stick they'll get annoyed, if you smile and shake their hand they will be your friends.

    John Welsford

  19. #19
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    Default Re: Hatches and Butterfly hatch thread

    That's quite interesting Gary, does it also slide back wth the leaves folded away? It looks like there is a track there....??
    Larks

    “It’s impossible”, said pride.
    “It’s risky”, said experience.
    “It’s pointless”, said reason.
    “Give it a try”, whispered the heart.

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  20. #20
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    Default Re: Hatches and Butterfly hatch thread

    Pictures tonight or tomorrow.

    Meanwhile, a point about butterfly skylights - they are much less likely to leak if the glazing is flush with or slightly proud of the surround - in other words, use thick glass - be it toughened, armour glass of what you will. The water won't sit in the dip and work through the putty, Sikaflex or whatever...

    They are also a d------ sight stronger, of course.

    There are two ways to rainproof them:

    1. Fit a good cover (only works when closed, of course)

    2. Stow an inverted dinghy over it (works in the open position for rain but not spray, but cuts down light...)
    IMAGINES VEL NON FUERINT

  21. #21
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    Default Re: Hatches and Butterfly hatch thread

    Quote Originally Posted by Andrew Craig-Bennett View Post
    Pictures tonight or tomorrow.

    Meanwhile, a point about butterfly skylights - they are much less likely to leak if the glazing is flush with or slightly proud of the surround - in other words, use thick glass - be it toughened, armour glass of what you will. The water won't sit in the dip and work through the putty, Sikaflex or whatever...

    They are also a d------ sight stronger, of course.

    There are two ways to rainproof them:

    1. Fit a good cover (only works when closed, of course)

    2. Stow an inverted dinghy over it (works in the open position for rain but not spray, but cuts down light...)
    Do you mean to say,Sir, that there is no possible way to build a waterproof skylight?
    I find that rather disheartening, in the name of modern man and all the years of our combined workmanship, that we cannot construct a device that lets in light but is resilient to water!
    ..don't judge a man till you've walked a mile in his shoes..

  22. #22
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    Default Re: Hatches and Butterfly hatch thread

    That is precisely what I mean!

    Let us assume that the drip channels are all clear, that the drip rails are all present and correct, that the glazing is as I have recommended. Let us further assume that the leaves have not warped even slightly. We now have four flat piece of teak surrounding a pane of glass, sitting on four other flat pieces of teak which are attached to a coachroof, attached to a boat, and we are expecting perfect contact all the way round...

    Adding rubber strips etc does not help because as soon as you pull the leaf down to get a good seal on the rubber you distort it.

    So you make a cover and put up with it. The cover can have windows in it...
    IMAGINES VEL NON FUERINT

  23. #23
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    Default Re: Hatches and Butterfly hatch thread

    Ok, I see. I didn't realize you were only talkin' about one style of hatch. I oughta read more.Cheers.
    ..don't judge a man till you've walked a mile in his shoes..

  24. #24
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    Default Re: Hatches and Butterfly hatch thread

    Larks, no it doesn't slide. The first hatch I made did but I got the rails slightly out of parallel, so it tended to be loose when closed and tight when open. I figured it was easier to build a new hinged hatch cover than replace the runners...some may argue that, but I couldn't face doing it all again. The hatch cover is flat because I had planned putting a Badger style rotating dodger in it...still might one day.
    My take is that if you poke someone with a sharp stick they'll get annoyed, if you smile and shake their hand they will be your friends.

    John Welsford

  25. #25
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    Default Re: Hatches and Butterfly hatch thread

    Indeed not. THIS ONE works perfectly (but requires more wood and more deck space...)


    Quote Originally Posted by Wooden Boat Fittings View Post
    .
    Maurice Griffiths' leak-proof hatch -- as he said, it will only leak if submerged....


    IMAGINES VEL NON FUERINT

  26. #26
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    Default Re: Hatches and Butterfly hatch thread

    I have been thinking in terms of a double wall structure like the Maurice Griffiths hatch above .It seems reasonable to use the same technique with a skylight ,in combination with rubber seals of the automotive type .

    Has anyone else thought on this ?
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

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    Default Re: Hatches and Butterfly hatch thread

    Quote Originally Posted by paladin View Post
    Those screw heads really need to be better seated......
    Nothing I like better than a real tight screw.....thanks paladin!!
    "how old would you be if you didn't know how old you are?"

  28. #28
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    Default Re: Hatches and Butterfly hatch thread

    Bump ...lest this fall .
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

  29. #29
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    Default Re: Hatches and Butterfly hatch thread

    These are the hatches I built for my new boat and the sources I pinched them from.

    Companionway hatch - Sam Manning (WB 67:91)




    Skylight – Duffy Dodge (WB 92:28)










    Fore hatch – Maurice Griffiths




  30. #30
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    Default Re: Hatches and Butterfly hatch thread

    Great work Don. Duffy Dodge was my main inspiration too - modified with the ventilating idea taken from another WB source... that I can't recall.
    "Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of our people need it sorely on these accounts. Broad, wholesome and charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime" Mark Twain... so... Carpe the living sh!t out of the Diem

    I'd rather look back at my life and say "I can't believe I did that" instead of being there saying "I wish I'd done that"

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    Default Re: Hatches and Butterfly hatch thread

    Thanks Ian. I really like the way you did your hatch too! Very nice.

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    Default Re: Hatches and Butterfly hatch thread

    All looking fantastic Don!!! Rick

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    Default Re: Hatches and Butterfly hatch thread

    Quote Originally Posted by The Bigfella View Post
    Great work Don. Duffy Dodge was my main inspiration too - modified with the ventilating idea taken from another WB source... that I can't recall.
    The Bud MacIntosh articles ...excellent stuff !

    I just copied those photos to my file Don ,excellent work !
    '' You ain't gonna learn what you don't want to know. ''
    Grateful Dead

  34. #34
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    Default Re: Hatches and Butterfly hatch thread

    Don, those photos are gold mate!! Thanks for posting them, pretty much just what I want to do on my H28. Brilliant
    Larks

    “It’s impossible”, said pride.
    “It’s risky”, said experience.
    “It’s pointless”, said reason.
    “Give it a try”, whispered the heart.

    LPBC Beneficiary

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  35. #35
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    Default Re: Hatches and Butterfly hatch thread

    Beautiful work there Don...that is how my work always turns out in my imagination...unfortunately the reality is different.
    My take is that if you poke someone with a sharp stick they'll get annoyed, if you smile and shake their hand they will be your friends.

    John Welsford

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