ST21 'Skinnydip' build, and boating adventures, Noosa, Australia

To help other builders, please list the boat you are building in the Thread Subject -- and to conserve space, please limit your posting to one thread per boat.

Please feel free to use the gallery to display multiple images of your progress.
User avatar
peter-curacao
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 7607
Joined: Mon Mar 24, 2008 1:29 pm
Location: Curaçao Dutch Caribbean

Re: ST 21 Noosa Australia

Post by peter-curacao » Sat Jan 16, 2016 9:51 am

glossieblack wrote:
Don't worry Jacques, it's now been dismantled, and a serious attempt at assembling with appropriate gaps will commence next week. :D
To me it already doesn't look to bad at all, very interesting hull shape 8)



User avatar
Cracker Larry
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 22491
Joined: Fri Mar 11, 2005 3:39 pm
Location: Savannah, GA

Re: ST 21 Noosa Australia

Post by Cracker Larry » Sat Jan 16, 2016 12:50 pm

Peter like his oysters too, preferably with vodka and hot sauce. I've seen us do it :lol: :help:
Completed GF12 X 2, GF16, OD18, FS18, GF5, GF18, CL6
"Ships are the nearest things to dreams that hands have ever made." -Robert N. Rose

User avatar
glossieblack
* Bateau Builder *
* Bateau Builder *
Posts: 3427
Joined: Wed Jan 02, 2013 1:28 pm
Location: Australia

Re: ST 21 Noosa Australia

Post by glossieblack » Wed Jan 20, 2016 4:23 am

Thanks for the interest blueflood and jorgepease. Pics don't convey the radical plywood contortions Jacques has achieved. 8)

And Peter and Larry, I too am partial to a flight or two (or three+ occasionally I seem to dimly remember) of oyster shooters :wink: :help:

Been working for the last couple of days stitching and re stitching, concentrating on getting a flat keel bottom (that's a straight edge aluminium section on the keel in the pic below), fair planking (the tunnel area is a real challenge), and gaps between all planks. Been an interesting challenge, as there is a lot of twisting in the tunnel sides and tunnel ceiling planking necessary to achieve the designed shape. Small timber wedges held in place by screws have enabled gaps to be achieved without compromising fairness. Found it necessary to slightly reduce the width of the trop chines (cutting of 10mm tapering to zero) to piece it all together. Further tweaking of gaps is required, with a number of joints needing to be opened up with a saw cut, but it should be possible to start epoxy welding an a day or so. :D

For the epoxy welding, is it best to use the kit supplied Gelmagic or EZ Fillet, and is it advisable to wet out the edges with the laminating epoxy first?

Image
Currently building Jacques Mertens ST21 "Skinnydip". Boating adventures: Splash testing and using 'Skinnydip, as a basis of further building refinement; Adams 44’ sailing sloop "Great Sandy" (cruising and maintaining); Iain Oughtred Feather Pram "Mini Dip" (building); Jacques Mertens R13 "Wood Duck" (built and due for maintenance).

blueflood
Very Active Poster
Very Active Poster
Posts: 815
Joined: Mon Feb 04, 2013 9:06 am
Location: Ottawa, ON, Canada

Re: ST 21 Noosa Australia

Post by blueflood » Wed Jan 20, 2016 6:54 am

HI glossieblack,

Great going 8) From my build, I have used S3 EZ Fillet but not for general construction as it is too expensive for my taste. I am using it for cosmetic filleting only. The standard epoxy / glue mix is better I think. Never used Gelmagic...

Marc

User avatar
topwater
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 3131
Joined: Tue Oct 30, 2007 6:27 pm
Location: Port Charlotte
Location: Florida

Re: ST 21 Noosa Australia

Post by topwater » Wed Jan 20, 2016 8:09 am

Use the gelmagic to glue seams , EZ fillet for fillets . No need to wet out seams if you use Gelmagic its wet
enough . I glued my whole hull together this way . If you can get to the inside of the hull and tape all the
seams with packing tape or good duct tape before hand it will save you a ton of time on the inside when
you flip the hull .
Novi 23 finally launched !

User avatar
peter-curacao
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 7607
Joined: Mon Mar 24, 2008 1:29 pm
Location: Curaçao Dutch Caribbean

Re: ST 21 Noosa Australia

Post by peter-curacao » Wed Jan 20, 2016 9:26 am

blueflood wrote:HI glossieblack,

Great going 8) From my build, I have used S3 EZ Fillet but not for general construction as it is too expensive for my taste. I am using it for cosmetic filleting only. The standard epoxy / glue mix is better I think. Never used Gelmagic...

Marc
I'm with you on that, did it the same way, I used Gel magic but didn't like it to much, don't know maybe it's the heat here but it thought it was to thin.

User avatar
jacquesmm
Site Admin
Site Admin
Posts: 27663
Joined: Wed Aug 14, 2002 1:00 am
Location: Florida USA
Contact:

Re: ST 21 Noosa Australia

Post by jacquesmm » Wed Jan 20, 2016 9:31 am

Thank you Topwater, all that is correct.
Jacques Mertens - Designer
http://bateau.com

tcason
Active Poster
Active Poster
Posts: 371
Joined: Mon Mar 04, 2013 11:33 am
Location: Maryland - US

Re: ST 21 Noosa Australia

Post by tcason » Wed Jan 20, 2016 11:09 am

wow after seeing that bottom I want to build a ST really bad............

That is a cool looking hull!!

User avatar
peter-curacao
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 7607
Joined: Mon Mar 24, 2008 1:29 pm
Location: Curaçao Dutch Caribbean

Re: ST 21 Noosa Australia

Post by peter-curacao » Wed Jan 20, 2016 11:42 am

tcason wrote:wow after seeing that bottom I want to build a ST really bad............

That is a cool looking hull!!
It is, it's a shame you can't see it once in the water :D

User avatar
jacquesmm
Site Admin
Site Admin
Posts: 27663
Joined: Wed Aug 14, 2002 1:00 am
Location: Florida USA
Contact:

Re: ST 21 Noosa Australia

Post by jacquesmm » Wed Jan 20, 2016 11:54 am

Yes, it is a nice shape.
I don't think anybody else successfully modeled that type of hull shape in 3D. I heard of a couple of failures but will not name them.
Atkins did not show enough information to redesign it and anyway, I blended the tunnel concept of several designs and cleaned it up a,little bit my way.
It is still a complex shape but as you can see from the pictures, it works.
It works also because this builder understands the technique: no panels pushing against each other.
It is not critical to get the bottom panel perfectly straight. Avoid hog but a little bit of rocker will not hurt, it is not a planing hull.
Jacques Mertens - Designer
http://bateau.com

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests