Sunday, May 22, 2011

Cleanup your mess




Cured epoxy has an amine blush. A coating of amines that new epoxy doesn't bond very well to.
Every time something is epoxied those amines need to come off. I sand, or abrade the surface in any way possible

Sunday, May 15, 2011

Putting it all Together






Megan assisted me in the next step of the restoration, in which we glued up the pieces under the mast step.

There were multiple pieces of both plywood and fiberglass that were numbered to aid in installing them in the correct order.

Layers of plywood and fiberglass were stuck together with epoxy and the wood was fitted around the three through bolts and then the layers of plywood and fiberglass were clamped together around the through bolts.






The area under and around the mast step was prepared to lessen the mess from the wet fiberglass and plywood as it was applied layer up layer. You want to do as many layers as possible together at the same time as you can save time by not having to repeat steps of the preparation process.

To the right the attempt to keep clothes as free from epoxy as possible...unfortunately the epoxy won out and the long sleeve shirt now has some very stiff arms.

Below the finished product with the clamp holding it all together while it cured. The clamp had to be fashioned just for this job as a regular clamp wouldn't fit.



















Wednesday, April 20, 2011

Jig Saw Puzzle



The pieces are made. Layers of 3/8" and 3/4" marine plywood. The wood came from the dumpster.

I started with making a pattern from a piece of cardboard. Trace it and cut it out with the bandsaw. Take the piece back and trim material away until it fits.






























All need to be labeled and the order they are going to be put back.





































Below you can see the two main methods of wood removal; belt sander and jig saw.



Sunday, April 17, 2011

Fencing, not with an épée.


The great thing about a foot plus of snow on the ground is that it keeps you mostly confined to the areas you have shoveled, the shortest distances between two points. Car, house and garage were the options and so statistics would show that I would then have a greater concentration of effort on the garage and there within Whoopee. Now with the sun out longer other things are taking a little attention.
The snow banks in the parking lot next door prohibited Megan and I from finishing the section of fence we wanted to build in the Fall. With its melting and the soon to be blossoming leaves it seemed a good time to get some of it done (the bushes/trees are very close to the fence, leaves blossoming would add an additional challenge).

Monday, March 28, 2011

Very Puzzle Like


Marine grade plywood will be fashioning the area under Whoopee's mast step. Around the bolts and then layered outboard. A big plywood, thickened epoxy and fiberglass mat sandwich. All pulled together, for eternity, with SS screws.

Tuesday, March 22, 2011

work progresses

Work progresses with fiberglass prep. Epoxy and fiberglass are really hard, so sanding them in a little area is a bit of a challenge.

In the midst of it.
Coveralls and a hooded sweatshirt mean I can get dirty while wearing pajamas.
















Work progresses with the cleaning up of the top layer of new fiberglass work, below and forward of the mast step I would love to use the Festool, but there is a bit of a size restriction. I have my chisel on a stick and sander on a stick. Chisel on a stick is a 12" oak handle on an old chisel. The sander on a stick is a 3/4" drum sander on a 3/8" metal dowel.

Saturday, March 19, 2011

I really like this thing. The thing, is a festool sander and a festool vacuum. The sander is very much like an angle grinder, but it has velcro sanding disks of different grits and attach to a soft or hard pad. The pièce de résistance is that when you rotate the handle a dust shield rotates and captures most particulates. Even though I wear a respirator, it is nice to greatly minimize all of that pesky fiberglass dust. I have stated to Megan that if there was a tool I would marry it would be this thing.

Tuesday, March 15, 2011

Fun With Fiberglass


Fiberglass can be fun. I want to connect both sides of the hull and reinforce below the mast step. I started by filling in the area of where the outer stem as with polyester and fiberglass strips. Polyester resin is good here because it is a non-structural area, and it is less expensive than epoxy. Once the outer stem area was filled I wanted to bridge the gap between each half of the hull, distributing the forces of the mast step over a large area. My first attempt to do this was not very successful. First it was to cold out and the epoxy was to cold. The colder it is the more difficult it is for the resin to soak into the glass. I did not wet out the glass enough, and after it cured it did not stick. I was able to remove a majority of the bad glass, it did not stick like it should, but it was still really stubborn. Death of a thousand cuts, access to the area is very tight and the only thing I had to use was a Dremel and chisel.


The picture above shows the cleaned up result. I left the dry glass that was directly under the mast step. This layer is in addition to the polyester filling below. The next layer will bond to this layer and to each side of the hull.

One positiv
e that came from this was my discovery of the innermost layer of original fiberglass and it's lack of resin. The layer closest to the wo
od would have been resin starved as the wood absorbed the resin before it cured.

You can see an area peeling up.
















I removed all of this layer on both port and starboard, prepared for more glass and put down another 2 layers of biaxial structural fiberglass and a layer of fiberglass mat.





















I then cleaned up this layer and put in a more extensive round of glass spanning the stem and criss crossing under the mast step.

This is where I am now. I am in the process of preparing this layer for additional fiberglass and plywood.

Wednesday, March 9, 2011

More INfo

The area under the mast step is getting reinforced. Multiple sets of layers are going to need to be put down, but after each layer the area needs to be cleaned up; sanded and or in the case of epoxy the amines removed. Amines are an oily blush that rise to the outside surface of the of the epoxy product I am using. The area currently under repair is at the pointy end of the boat, so there is not much room. Whoopee is mostly a wide boat, so the area under repair is not as difficult to get to. I guess in a way it was good the centerboard trunk leaked. Its removal greatly facilitates access to the stem area.

Pictures to follow.

Sunday, March 6, 2011

A word on what's happening

As you'll see with this process, and the pictures I will continue to add to this site, the work to rebuild where the wood was rotted away will happen in stages, each layer applied one at a time with prep in between each additional layer.

First Look at Repairs




Here are a few pictures of repair work, related to building up where stem used to be.

Monday, February 28, 2011