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Old Mar 24, 2015, 01:16 AM
Tug Hercules Fireman
Tug Hercules's Avatar
Canada, AB, Medicine Hat
Joined Mar 2008
237 Posts
Discussion
Plank & Frame - Tug Hull

I am in the final planning stages to finally start my 1st Plank & Frame Tug Hull.

My Tug will be 44-1/2" overall.

What are most folks using for frame thickness; 1/8", 3/16" or 1/4" material, for this size of hull??

Balsa, Basswood or other??

Thank You.

Tug Hercules
Fireman Rick
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Old Mar 24, 2015, 02:43 AM
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Detroit Metro, MI, USA
Joined Dec 2007
217 Posts
For my 36" scratchbuilt tug, I used 3/16" 2'x4' luan plywood for the frames and keel. Cheap at Home Depot. Just mind the splinters.

1/8" x 1/2" x 36" Balsa Strips for the planking (with lots of Windex for the curves). Balsa is easier to work with. A little thick, but you're going to need to sand anyways. Wider strips, so a little less work. You're making a big boat.

Finally, Balsa blocks for the bow and stern. Sand to shape of the frames. The balsa strips won't want to bend that severely in those areas.

This worked for me. Hope it helps
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Old Mar 24, 2015, 07:47 AM
Deckineer at large
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New York
Joined Sep 2007
83 Posts
What did you use for glue to attach the planking?
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Old Mar 24, 2015, 11:29 PM
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mr_impervious's Avatar
Detroit Metro, MI, USA
Joined Dec 2007
217 Posts
Quote:
Originally Posted by nova55 View Post
What did you use for glue to attach the planking?
I use Zap-A-Gap Medium CA+ glue with accelerator to speed things up. Then Z-Poxy finishing resin on the inside (by itself) and outside (with fiberglass).
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Old Mar 25, 2015, 04:17 AM
Nickel Belter
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Canada, MB, Winnipeg
Joined Jun 2009
870 Posts
I used Baltic or Russian birch plywood for my frames, 6mm thickness (but it's sold as 1/4 inch, so be careful) and roughly 1/8th inch planks cut from clear pine.
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Old Mar 25, 2015, 04:44 AM
Registered User
Auckland New Zealand
Joined Sep 2010
170 Posts
I used 3/16 ply for frames and keel and 3/32 x 3/8 clear pine (ripped from 4" x 3/8) planking. I used a pressure steamer (pic 1 ) to soften the planks and gorilla glue as adhesive. Balsa blocks for bow and stern.
This for a 23" model of the Polish harbour tug KLIMEK
So 1/4" ply for frames should be ok, even 3/8".
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Last edited by KIWINB; Mar 25, 2015 at 04:57 AM.
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Old Mar 25, 2015, 07:39 AM
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Oakland Ca.
Joined Aug 2009
9,673 Posts
That's a Nice model you got there ....
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