Flotation foam

[Jakem]

Progress

 

[KJM]

Not trying to be critical, but I don't think you are putting enough resin on that FG and pressing out all the air. It should be all like those transparent parts in your picture, those white parts have a lot of air still in the glass.

 

[Jakem]

One side for sure I have to redo I ran out of resin .

 

[Jakem]

Any suggestions on gluing the outside fiberglass to the new transom plywood

 

[Scott Danforth]

are you trying to use the old skin?

you should be laminating over the plywood and fairing.

 

[flashback]

Any suggestions on gluing the outside fiberglass to the new transom plywood

Don't, you'll never get it water tight.

 

[Jakem]

That was my idea. And then fg the seams

 

[Jakem]

Plan b...fair and glass new wood to 1/4 inch. Use old skin I re glassed on the inside of transom. What's your thoughts

 

[KJM]

I would say forget the old glass and put new inside and out. That would be strongest and most water tight.

 

[Jakem]

How would it not be water tight with my original idea of reinstalling the glass I cut out. Then glass it in and gel coat

 

[Scott Danforth]

To get strength, you will need to bevel grind back about 6" on both sides of the cut.

Overlapping the tabbing on each layer of 1708.

Then grind off the gel off the whole transom, and about a foot forward of the transom on the sides and bottom. Followed by another layer of 1708, then fair smooth and flat.

Lastly, gel the transom and sides

 

[Jakem]

Ok so am I beveling the new plywood back 6 inches or using the old glass and beveling that

 

[Scott Danforth]

Your plywood should match the transom shape and go corner to corner. You need it flat (no bevel)

If you want to reuse the glass, you have to bevel both of the edges of the cut back.

It's less work to just bevel the boat side and lay the fiberglass on the wood

 

[Jakem]

Ahh gotcha thanks

 

[Scott Danforth]

there used to be a good sketch in the Oops hull extension thread. https://forums.iboats.com/threads/hull-extension-in-progress-with-pics.231766/

however I couldnt find it this morning.

its basically this



where the black is your plywood, the red is the beveled fiberglass.

 

[Jakem]

The only reason I wanted to use the old glass is I reglassed both side with 2 coats and it's pricey for the materials but if it's better and easier to not use it I wont

 

[JASinIL2006]

Seems like it would be a lot easier and stronger if you just laid new fiberglass, rather than reusing the old piece.

 

[Scott Danforth]

and it's pricey

yes. owning a boat is only slightly cheaper than owning an airplane or a race horse