core

I'm ordering some materials for a medium sized multihull build, but marine grade stuff is very hard to find here. I'm importing some rolls of fiberglass, and a pallet of p80 foam, however I estimate I'd still be short about 10 sqm. Not enough to foot the cost for an additional pallet of foam...

I replaced core of a Grady Adventure 208 from the outside as design of stern section with molded seats (oil compartment & battery compartment)and cap made it impractical to work from the inside. Pic below: This is my second transom (1st Bertram from inside) and I feel good about the new core...

I'm getting ready to build a small proa schooner primarily with 12 mm gpet foam with corecell for bottom planks in large flat panels similar to a stitch and glue plywood craft. There are a few places where I know I'll need inserts at the rudders and bushings for telescoping alum tube beams. Plan...

I need to calculate the shear rating for a bolt being pulled across a glassed core. Not out, but across. the bolt is 3/8-16" and would have a dimension in the core of pi•0.375"/2, or 0.589" the core is corecell M200 with a shear alone of 428psi; thickness is 12mm or 0.472" no skin the skins...

Hello all, from past projects we have some remanent composite material that may be of interest to this forum. I'm posting here what we have available. If anyone is interested donn't hesitate to contact me. - Core-cell P500 (1065mm x 2185mm) in 30, 25, and 15 mm thickness - T700 Unidirectional...

I’m deathly allergic to epoxy. As in, anaphylactic reaction and hospital time. My boat is epoxy/corecell for the most part and epoxy/balsa in a few areas. I need to finish off the boat’s interior and place deck hardware and things like that. This involves drilling (and cutting) into the...

I have been thinking about building a tiki 26 and am stuck on whether to use plywood, or to attempt it with polypropylene honeycomb. I am thinking that the honeycomb will possibly be lighter, easier to maintain and have a higher resale value. Has anyone tried this before? considering much of the...

I have sourced numerous urethane rigid panels (1.5" x 4'x10') that i hope to utilize as both the sub floor and shade structure of a 50 ft. power cat. Normally I would use Nida Core or other similar core products. Am I missing something? the cost savings is $Thousands$, I have laminated two...

Building a floating cat cockpit. About 100" wide and 100" long. There will be two panels joined in the middle on the 100" seam. So, each panel will be 50"x100" for handling. The join will be done with 316 stainless angle. The panels will be assembled using 12mm corecell M and a laminate...

I need to install ? probably 3 per side ? 8" ss cleats on my 10M cat hull outsides. The boat is foam. Is this done with a plywood insert or is a ply backer sufficient? I am laminating with 22 oz triax, but that doesn't seem string enough to me, which rules out a simple backer. Then when you...

I have these two materials available in my part of the world, and I have never heard of the G-pet. The two things that would recommend it is that as sold locally, it is the only one available in 4x8 sheets. All the boats I am working on either need that width for efficient construction, or in...

Can you vacuum infuse wood? Could you CNC pieces out of lumber that fit the mold perfectly and has flow channels? Hi, I'm new here and I've been dreaming of living on a big ship for a while now. Ideally a large powered cat. But the more I read I realize the enormity and cost of a build. I'm...

Dear All, I've been wanting to build a small boat (2 to 3ish meters) for a while, however I want to do so in an easy and cheap way with minimal tools. Rather than using plywood, complex ribbing and strip planking, or foam composite techniques to create a hull, what's stopping me from getting a...

So, I want to build a 4 step staircase that is 20" wide by 10" deep each step and 10" high for each step. I'd like to build the steps so there is a dresser/bureau underneath. The bottom step would be open and the next two steps would be dresser drawers underneath. I'd like to build the steps...

Just bought a 60's sailboat with a balsa cored deck. Most of the deck is sound, but i started digging out the few soft spots. Where the fiberglass skin is delaminated, the old balsa has basically been reduced to powder, obviously rotten. My issue is that as I keep digging, the core still seems...

I want to build up a core to 1 3/4" for a transom. I will use two pieces of 1/2" and one 3/4" high density M200. The lamination schedule for the transom is 4 layers each side of 22 ounce triaxial. The triax is 0 +45, -45. I rebated the bottom and the sides of the hull to accept all 4 layers...

View of the cockpit area when the deck was first fitted to the hull. The mass of the complete deck is just under 200 kg and features carbon skins and a foam core. Both deck skins were vacuum infused with epoxy resin.

Preliminary design for a recreational rowing shell. Discussion can be found at http://www.boatdesign.net/forums/showthread.php?s=&threadid=2146

This is Hammer, a designed and built at home. Corecell foam cored 30' open sportfisherman.