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25 Carolina Custom Center Console Build

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25 Carolina Custom Center Console Build

Old 11-29-2015, 09:45 AM
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What are some c- flex specifics? Glass weight, orientation,schedule?
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Old 11-29-2015, 09:59 AM
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Originally Posted by Wishniwasfishn View Post
What are some c- flex specifics? Glass weight, orientation,schedule?
Yeah this is the first time I've heard of this product.

Tarbaby you call it gangster boat building... I can clearly see the extra labor involved with sanding and fairing, but what can you tell us about positives and negatives?

Seems to me like it would be a relitively fast way to get a hull built. But then is it heavier than if you cold molded a composite core? What else?
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Old 11-29-2015, 10:02 AM
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Looked this up:

http://seemanncomposites.com/index.p...d=22&Itemid=22

Cool project op. Nice to see a different method. Really interested to watch you do this.
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Old 11-29-2015, 10:11 AM
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Originally Posted by Big Iron View Post
Looked this up:

http://seemanncomposites.com/index.p...d=22&Itemid=22

Cool project op. Nice to see a different method. Really interested to watch you do this.
Thanks for the link, very interested to watch this come together. I'm sure we will here all the pros and cons shortly.
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Old 11-29-2015, 10:28 AM
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Subscribed! Looking at this pic and trying to find something out of line but nothing, this is about as perfect as it gets. Great angle.

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Old 11-29-2015, 11:18 AM
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Default From http://www.sintesfiberglass.com/id71.html

C-Flex, Sheathing System



The C-Flex Sheathing System was developed to protect the hulls of old and new wooden boats from rot and marine parasites. It is a simple process that covers the hull with a high strength skin of fiberglass that will greatly increase the life and strength of a boat and will dramatically reduce the cost of maintenance.

C-Flex is ideal for the manufacturing of custom boats. The properties of C-Flex allows any form to be built using simple and inexpensive framing procedures instead of costly molding methods.

Each "plank" of C-Flex contains small semi-rigid rods that run lengthwise thoughout the cloth. These rods allow the fiberglass to hold its form while resin is applied. This process eliminates the need for a full mold used in traditional fiberglass construction.

The basic technique involves both chemically bonding and mechanically fastening the C-Flex to the wooden hull. The C-Flex is applied vertically from gunwale to keel so that the rods in the C-Flex run perpendicular to the wooden planking. The mechanical fastening is accomplished with heavy staples, and the chemical is done with an elastomeric adhesive.

The C-Flex is then saturated with resin and covered with chopped strand mat (CSM). A fairing compound is applied to the exterior, and the compound is sanded and painted.

Materials

The Adhesive - The adhesive used to bond the C-Flex to the wood is a moisture-cured elastomeric polyurethane which was developed for marine use. It has several characteristics, which make it an excellent material for the bonding agent. First is that it bonds ferociously to both the C-Flex and the wooden planking. Secondly, it will bond to wet wood, treated wood, and virtually all the various types of woods used in marine planking. Add thirdly, being an elastomeric, it will stretch (300%) and compress without breaking its bond. This is essential in preventing the delamination, which might otherwise be caused by the expansion and contraction of the planking and by the “working” of the hull.

C-Flex – C-Flex is a fiberglass planking that was developed for “one-off” fiberglass boatbuilding. It is a high strength (67,000 p.s.i. tensile) material, which contains fiberglass rods and continuous fiberglass rovings.

The C-Flex is applied perpendicularly so that the strength of the C-Flex will directly withstand the expansion and contraction of the planks. The Sheathing is securely fastened to the planking with bronze staples.

Chopped Strand Mat – CSM is a relatively low strength (11,000 p.s.i. tensile) omnidirectional fiberglass material. It is not a woven fabric, but rather a composite of randomly oriented strands of fiberglass. It is used in laminates to assist in bonding between layers of fabric.

CSM is well suited to sheathing because it can be easily applied overhead.

Occasionally multiple layers of CSM are required, depending upon the size, design, use and condition of the vessel.

Fairing Compound – To smooth the exterior surface, a fairing compound composed of polyester resin, industrial talc and glass microspheres is used. This compound is easily applied and dries to a hard, resistant surface. It is sanded to the required smoothness and then painted

Application

The C-Flex Sheathing System may be applied to large wooden boats that cannot be turned over.

Hull Preparation – The hull is sandblasted and/or sanded (24 grit) to remove all paint. Any weak or rotten planks should be replaced, holes should be patched and any necessary fairing work should be done to create a uniform surface.

Applying the Adhesive – The adhesive is a one-part adhesive, which is worked similar to a plaster. It is applied with a notched trowel (1/4” teeth) held at a 45-60 degree angle. The adhesive has a four-hour working time before it begins to cure.

Applying the C-Flex – The C-Flex is applied directly over the uncured adhesive so that the adhesive is squeezed up into the C-Flex. The C-Flex is held in place by small wooded battens that are stapled across the C-Flex using steel staples. These battens hold the rods evenly in place.

The C-Flex is then permanently stapled into the hull with bronze staples. These are applied 12 per sq.ft.

Saturating the C-Flex – Once the adhesive is cured, the battens are removed and the C-Flex is saturated with general purpose laminating resin.

Finishing the Hull – The application of the CSM, fairing compound and paint is similar to the method used on “one-off” boats. The amount of time required for this step depends on the surface finish required.

General Notes on Application Procedure – There are several minor variations on this system which are dependent upon the conditions under which the boat will be sheathed. In general, fiberglass work should be done in a sheltered area. If this in not possible, we have developed techniques for working in the open. Please consult with us at the time of your purchase so that you are property informed of these details.

Conclusions

The technical advantages of the C-Flex Sheathing System are: 1) that it can be easily applied to boats without turning them over, 2) the extremely high strength of C-Flex means that much less material and time is required, 3) the fiberglass is mechanically fastened and chemically bonded to the wood to prevent delamination, 4) the chemical bond is an elastomeric polyurethane which will expand and compress without breaking the bond, thus preventing delamination, and 5) the adhesive will adhere to wet wood, treated wood and virtually every variety of wood used in boat planking.
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Old 11-29-2015, 11:52 AM
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sounds like a much easier product to use. What is the projected cost of all the materials to do such a project
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Old 11-29-2015, 11:58 AM
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wow whatare you thinking for motor options
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Old 11-29-2015, 03:22 PM
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Got the rest of the C-Flex on the frames and spent some time fine tuning some high spots and low spots that I could see i have heard that the more you fix before you use resin the less amount of grinding and filling you will have to do before laying the glass. The videos that sintes supplies with the kit help out alot they show him building the boat step by step from beginning to end. He also is always willing to answer questions when contacted. I also have been talking to Layton Custom Boatworks and they have been giving me great information.
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Old 11-29-2015, 03:24 PM
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I think I will be powering the boat with a 250 Etec G2
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Old 11-29-2015, 03:26 PM
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I thought the C-Flex would be difficult to work with but following Dave Sintes's instructions made this stuff pretty easy to use.
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Old 11-29-2015, 03:35 PM
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Originally Posted by seanhankinson View Post
I think I will be powering the boat with a 250 Etec G2
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Old 11-29-2015, 04:03 PM
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Default Looks great!

Subscribed!
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Old 11-29-2015, 04:23 PM
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Sub

B
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Old 11-29-2015, 04:32 PM
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Ok, so how much resin do you mix up to saturate an entire hull? Do you do it in batches? I'm thinking you'd have to.
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Old 11-29-2015, 04:33 PM
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I have two sintes designed skiffs, great hulls. You should be happy with your end product.
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Old 11-29-2015, 04:38 PM
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So that's one layer of c-flex I see in the picture? Amazing how clean and flat it looks. What is you lamination schedule from here? Fascinating build.
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Old 11-29-2015, 05:02 PM
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Great thread. I learned something new today. Do yourself a favor and take a ride
on a boat powered by a new Suzuki 300. Super quiet and fuel efficient.
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Old 11-29-2015, 05:16 PM
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X2 on the Zuke and I was going to suggest u chat with Doug Layton. David is the archtect for all of their hulls from the 22' to their 50' sport fish.
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Old 11-29-2015, 06:32 PM
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Cool product!! Looking forward to the progress. Rag's
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