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    New project - USS Nautilus

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    david f
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    Re: New project - USS Nautilus

    Post  david f on Mon Nov 17, 2014 8:59 am

    Very nice Andreas!

    The future - we'll just download a CAD/CAM file?

    From our previous discussions, the only remaining problem seems to be the cost and availabilty of the fabrication stage?

    David

    BTW Andreas - I see that you are still a Guest. You can join the AMS now. Just click the link and it's free.

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Mon Nov 17, 2014 10:13 am

    CAD/CAM definitely expands the possibilities allot. I'm tempted to get the props 3D printen in titanium. Just some polishing and then some proper moulds. Would also be a good route for the mast pre forms.

    What do you mean with guest? I'm a registered forum user.....

    Cheers Andreas
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    david f
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    Re: New project - USS Nautilus

    Post  david f on Mon Nov 17, 2014 10:42 am

    You are indeed!

    Thanks,

    David

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Tue Nov 18, 2014 9:43 am

    Worked a bit more on the props. Added a real Profile to tha blades and reworked the radius blends. Now I have to figure, if I get them printed in metal or plastic.




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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Nov 23, 2014 5:18 pm

    That's about how I envision the upper part of the sail....


    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sat Dec 06, 2014 5:00 pm

    A glance into the living resin & glass fiber hell.......


    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Dec 07, 2014 8:25 pm

    More concept work.....this time the anchor:

    Original:
    https://c1.staticflickr.com/3/2549/3953530408_1ebf3b2d4f_z.jpg

    CAD:

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Dec 07, 2014 8:54 pm

    And on the boat.....

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    salmon
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    Re: New project - USS Nautilus

    Post  salmon on Mon Dec 08, 2014 1:48 pm

    Dr.Schmidt wrote:A glance into the living resin & glass fiber hell.......

    I have not worked with fiberglass, is that sand being used? Can you tell me what is happening in this photo?
    Thank you!


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    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Mon Dec 08, 2014 3:32 pm

    The procedure to make my moulds is as follows:

    You put your pre-form into the sepeartion plane ( if necessary) and then you build these wooden boxes around the pre form. In my case I used plastic coated chipboard for the boxes. Everything is then covered sereveral times with a mould release wax. Then I apply the top coat, wich is a metal filled mould gelcoat (everything blue in the picture a remanents of the gelcoat). Then you let the mould gelcoat set. Next, one laminates about 3 mm of glassfiber into the mould box and fills it with what you called sand (which is pretty close). The sand actually is made of about 2 mm large glass spheres. It's a cheap product called Proaver http://www.poraver.com/en/. It easily mixes with resin, does not need to much of it and then solidifies to a block that can easily be sanded but can take the perssure of screw clamps. Finally you sand the proaver to a flat plane and seal the mould again with about 3 mm of glass fiber. This way you get a closed box wich is very stiff, easy to clean and will stay straight, evene when clamped together.

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Tue Dec 09, 2014 8:25 pm

    First tool done....upper half of the bow:




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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Dec 14, 2014 12:30 pm

    More mould making mayhem

    bow - lower half:


    bow complete:


    deck - main mould:

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Thu Dec 18, 2014 5:13 pm

    The last milled pre-forms. The conning tower....



    And the rudders:

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Dec 21, 2014 8:34 am

    That's the current status of the design....


    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Thu Dec 25, 2014 12:31 pm

    Right in time for Christmas I got a big package full of 3D-printed parts:

    Propellers - turned out really good, even the profiles. Excellent for only 28 mm diameter.




    Stern bulkhead - notice the 7° kink for the tilted prop axis:



    deck hatches:


    Sail cover, bridge, mast housing and small parts like periscopes:








    That's going to be plenty of work to make moulds for all these parts.....

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sat Dec 27, 2014 1:00 pm

    The first mould for the stern section:





    Actually it's two moulds, as there will be a service hatch here:





    Now I have to take an involuntary break.....I ran out of glass fiber

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Dec 28, 2014 1:03 pm

    O.K., the upper half of the stern mould is done as well:


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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Fri Jan 02, 2015 9:32 am

    One can already guess from the pictures above....it's going to be tight in the stern section:

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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sat Jan 03, 2015 1:11 pm

    Really not much space in the stern section, but just enough to get conventional hook ups in there:

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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Tue Jan 06, 2015 9:18 pm

    The bow planes are not quite trivial, too. Right now I plan to keep them fixed. The whole alignment will be done with a single bulkhead:




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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Mon Jan 19, 2015 5:35 pm

    The decks and a few smaller parts are going to be photo etched. Hell of a work to draw all that.....

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Mon Jan 26, 2015 8:43 pm

    Small update. The moulds for the hull are done and only minor adjustments have to be added. The moulds for the sail will be ready by end of the week...hopefully. And to avoid boredom, I've started to fabricate the silicone moulds for the smaller pieces. All cast in PU resin:


    top of the sail, mast support, bridge, sonar dome, hatches etc.



    Hatches:


    And again the lid of the sail:

    Dr.Schmidt
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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Thu Jan 29, 2015 8:10 pm

    Well, the moulds for the sail....done.


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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sat Feb 07, 2015 4:51 pm

    O.K., getting the first parts out of the new moulds. The sail is laminated and in its vaccum sack.


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    Re: New project - USS Nautilus

    Post  Dr.Schmidt on Sun Feb 08, 2015 9:23 am

    The design is getting close to finalization as well.....

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