Classic SeaCraft Community - Coffin box build

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- - Coffin box build (http://www.classicseacraft.com/community/showthread.php?t=27717)

can I steal the idea to use in my 20 MA... I plan to build a box to fit between my console and the step up..... this is bigger but scaled down with no curve... and the insulation is WAY above anything on the market !!!

Quote:

Originally Posted by shine (Post 241342)

Its going to be light compared to a glass hull of the same size.

My first drawings had a carolina style topsides with broken sheer and a little more tumblehome. More https://www.youtube.com/watch?v=huFra1mnIVE decreased the cockpit width too much though. Form following function, what make a good traditional carolina hull, turns a "gimmicky" IMHO when you go to a 25 open boat. fine entry, flair, warped bottom ending in nearly flat deadrise is what makes a bigger carolina boat work.

It would be possible to modify this design to a VDH without too much trouble.

I have a ton of pictures, and I am keeping a build thread on other forums, just didnt think it was totally on topic for CSC forum, but I can post some pictures in an off topic thread.

I have seen some of the smaller Carolina boats built as scaled down versions of their bigger cousins but don't think the flat back on the bottom suits them well at that length. Your design should aid in those areas that better fit the smaller hulls. Not everything can be just scaled down and still work. I love the look of the broken sheer and exaggerated tumblehome but It makes since to keep the space more usable when you have the narrower beam. If you don't mind posting the pics, I would love to see them in a "off topic" thread

Quote:

Originally Posted by RUSTYNTABATHA (Post 241569)

I would be happy if anything I have posted can be of use to you, in fact, thats really the whole point :)

Thanks for the coffin build and info on the boat build. Why did you go with a plank method vs foam core or cold mold (think you mentioned time and effort were a negative)?

Could you compare the 3 methods in terms of skill, cost, time, strength, weight?

Thank you!

Quote:

Originally Posted by flyingfrizzle (Post 241572)

If you don't mind posting the pics, I would love to see them in a "off topic" thread

posted a few renderings and specs .....

http://www.classicseacraft.com/commu...608#post241608

more primer, more fairing. *PVC epoxied into the bottom for the mounting bolts.

http://i68.servimg.com/u/f68/19/19/83/70/20160218.jpg

http://i68.servimg.com/u/f68/19/19/83/70/20160219.jpg

http://i68.servimg.com/u/f68/19/19/83/70/20160220.jpg

http://i68.servimg.com/u/f68/19/19/83/70/20160221.jpg

http://i68.servimg.com/u/f68/19/19/83/70/20160222.jpg

using the same hinges I used on the last coffin box, super heavy duty and rounded

http://i68.servimg.com/u/f68/19/19/83/70/20160223.jpg

Using EMC highbuild primer, it sure fills and builds fast !

link to the primer: http://www.gulfstreamcomposites.com/...mers-s/126.htm

Quote:

Originally Posted by SandlapperGT (Post 241607)

Sheathed strip (composite sandwich with wood strip core) is easier (quicker less skill needed) and cheaper than foam strip. Its lighter and cheaper than cold molded, probably quicker too

I prefer a sandwich hull, this one gets a lot of glass. Outside skin actually will have just about the same glass schedule if it were a foam core boat.

Another coat of EMC highbuild primer, then today the first two coats of Matterhorn White on the inside of the box. *Picture shows only the first coat. *Second coat gave full coverage. * The guide coat is just some spray paint, it lets you see where you need to sand and keeps you (hopefully) from sanding through. *Actually, I did sand through in some spots on the inside, but the paint covered just fine. *Paint is rolled on (no tipping) with a cigar style roller. *I used no reducer and it laid out like glass.

http://i84.servimg.com/u/f84/19/19/83/70/20160210.jpg

http://i84.servimg.com/u/f84/19/19/83/70/20160211.jpg

http://i84.servimg.com/u/f84/19/19/83/70/20160212.jpg

http://i84.servimg.com/u/f84/19/19/83/70/20160213.jpg

That's coming out awesome ...

sanded outside of box to 220 grit. *Used my neighbors spray booth just to keep dust off, rolled a couple coats of EMC Quantum paint on in the booth. *Used about 1/2 quart so far and covered about 56 square feet with two coats. * *I need to put a coat on the boattom of the box, and I may put another coat on the inside of the box, but besides that I think the painting is done. *The guy I am building this for wanted a non-skid pattern on the top, so that will happen next week after I install the hardware and gasket

http://i84.servimg.com/u/f84/19/19/83/70/20160214.jpg

this picture was taken right after rolling the paint on, it is in the process of laying out.

http://i84.servimg.com/u/f84/19/19/83/70/20160215.jpg

This is after about 1 hour, all tightened up and dry to the touch. *

http://i84.servimg.com/u/f84/19/19/83/70/20160216.jpg